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 <fcntl.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <sys/ipc.h>
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14 #include <dlfcn.h>
  15 #ifdef CONFIG_VALGRIND_DEV
  16 #include <valgrind/drd.h>
  17 #else
  18 #define DRD_IGNORE_VAR(x) do { } while (0)
  19 #endif
  20
  21 #include "fio.h"
  22 #ifndef FIO_NO_HAVE_SHM_H
  23 #include <sys/shm.h>
  24 #endif
  25
  26 #include "parse.h"
  27 #include "smalloc.h"
  28 #include "filehash.h"
  29 #include "verify.h"
  30 #include "profile.h"
  31 #include "server.h"
  32 #include "idletime.h"
  33 #include "filelock.h"
  34 #include "steadystate.h"
  35
  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 int dump_cmdline;
  50 static int parse_only;
  51
  52 static struct thread_data def_thread;
  53 struct thread_data *threads = NULL;
  54 static char **job_sections;
  55 static int nr_job_sections;
  56
  57 int exitall_on_terminate = 0;
  58 int output_format = FIO_OUTPUT_NORMAL;
  59 int eta_print = FIO_ETA_AUTO;
  60 unsigned int eta_interval_msec = 1000;
  61 int eta_new_line = 0;
  62 FILE *f_out = NULL;
  63 FILE *f_err = NULL;
  64 char *exec_profile = NULL;
  65 int warnings_fatal = 0;
  66 int terse_version = 3;
  67 int is_backend = 0;
  68 int nr_clients = 0;
  69 int log_syslog = 0;
  70
  71 int write_bw_log = 0;
  72 int read_only = 0;
  73 int status_interval = 0;
  74
  75 char *trigger_file = NULL;
  76 long long trigger_timeout = 0;
  77 char *trigger_cmd = NULL;
  78 char *trigger_remote_cmd = NULL;
  79
  80 char *aux_path = NULL;
  81
  82 static int prev_group_jobs;
  83
  84 unsigned long fio_debug = 0;
  85 unsigned int fio_debug_jobno = -1;
  86 unsigned int *fio_debug_jobp = NULL;
  87 unsigned int *fio_warned = NULL;
  88
  89 static char cmd_optstr[256];
  90 static bool did_arg;
  91
  92 #define FIO_CLIENT_FLAG         (1 << 16)
  93
  94 /*
  95  * Command line options. These will contain the above, plus a few
  96  * extra that only pertain to fio itself and not jobs.
  97  */
  98 static struct option l_opts[FIO_NR_OPTIONS] = {
  99         {
 100                 .name           = (char *) "output",
 101                 .has_arg        = required_argument,
 102                 .val            = 'o' | FIO_CLIENT_FLAG,
 103         },
 104         {
 105                 .name           = (char *) "latency-log",
 106                 .has_arg        = required_argument,
 107                 .val            = 'l' | FIO_CLIENT_FLAG,
 108         },
 109         {
 110                 .name           = (char *) "bandwidth-log",
 111                 .has_arg        = no_argument,
 112                 .val            = 'b' | FIO_CLIENT_FLAG,
 113         },
 114         {
 115                 .name           = (char *) "minimal",
 116                 .has_arg        = no_argument,
 117                 .val            = 'm' | FIO_CLIENT_FLAG,
 118         },
 119         {
 120                 .name           = (char *) "output-format",
 121                 .has_arg        = required_argument,
 122                 .val            = 'F' | FIO_CLIENT_FLAG,
 123         },
 124         {
 125                 .name           = (char *) "append-terse",
 126                 .has_arg        = optional_argument,
 127                 .val            = 'f',
 128         },
 129         {
 130                 .name           = (char *) "version",
 131                 .has_arg        = no_argument,
 132                 .val            = 'v' | FIO_CLIENT_FLAG,
 133         },
 134         {
 135                 .name           = (char *) "help",
 136                 .has_arg        = no_argument,
 137                 .val            = 'h' | FIO_CLIENT_FLAG,
 138         },
 139         {
 140                 .name           = (char *) "cmdhelp",
 141                 .has_arg        = optional_argument,
 142                 .val            = 'c' | FIO_CLIENT_FLAG,
 143         },
 144         {
 145                 .name           = (char *) "enghelp",
 146                 .has_arg        = optional_argument,
 147                 .val            = 'i' | FIO_CLIENT_FLAG,
 148         },
 149         {
 150                 .name           = (char *) "showcmd",
 151                 .has_arg        = no_argument,
 152                 .val            = 's' | FIO_CLIENT_FLAG,
 153         },
 154         {
 155                 .name           = (char *) "readonly",
 156                 .has_arg        = no_argument,
 157                 .val            = 'r' | FIO_CLIENT_FLAG,
 158         },
 159         {
 160                 .name           = (char *) "eta",
 161                 .has_arg        = required_argument,
 162                 .val            = 'e' | FIO_CLIENT_FLAG,
 163         },
 164         {
 165                 .name           = (char *) "eta-interval",
 166                 .has_arg        = required_argument,
 167                 .val            = 'O' | FIO_CLIENT_FLAG,
 168         },
 169         {
 170                 .name           = (char *) "eta-newline",
 171                 .has_arg        = required_argument,
 172                 .val            = 'E' | FIO_CLIENT_FLAG,
 173         },
 174         {
 175                 .name           = (char *) "debug",
 176                 .has_arg        = required_argument,
 177                 .val            = 'd' | FIO_CLIENT_FLAG,
 178         },
 179         {
 180                 .name           = (char *) "parse-only",
 181                 .has_arg        = no_argument,
 182                 .val            = 'P' | FIO_CLIENT_FLAG,
 183         },
 184         {
 185                 .name           = (char *) "section",
 186                 .has_arg        = required_argument,
 187                 .val            = 'x' | FIO_CLIENT_FLAG,
 188         },
 189 #ifdef CONFIG_ZLIB
 190         {
 191                 .name           = (char *) "inflate-log",
 192                 .has_arg        = required_argument,
 193                 .val            = 'X' | FIO_CLIENT_FLAG,
 194         },
 195 #endif
 196         {
 197                 .name           = (char *) "alloc-size",
 198                 .has_arg        = required_argument,
 199                 .val            = 'a' | FIO_CLIENT_FLAG,
 200         },
 201         {
 202                 .name           = (char *) "profile",
 203                 .has_arg        = required_argument,
 204                 .val            = 'p' | FIO_CLIENT_FLAG,
 205         },
 206         {
 207                 .name           = (char *) "warnings-fatal",
 208                 .has_arg        = no_argument,
 209                 .val            = 'w' | FIO_CLIENT_FLAG,
 210         },
 211         {
 212                 .name           = (char *) "max-jobs",
 213                 .has_arg        = required_argument,
 214                 .val            = 'j' | FIO_CLIENT_FLAG,
 215         },
 216         {
 217                 .name           = (char *) "terse-version",
 218                 .has_arg        = required_argument,
 219                 .val            = 'V' | FIO_CLIENT_FLAG,
 220         },
 221         {
 222                 .name           = (char *) "server",
 223                 .has_arg        = optional_argument,
 224                 .val            = 'S',
 225         },
 226         {       .name           = (char *) "daemonize",
 227                 .has_arg        = required_argument,
 228                 .val            = 'D',
 229         },
 230         {
 231                 .name           = (char *) "client",
 232                 .has_arg        = required_argument,
 233                 .val            = 'C',
 234         },
 235         {
 236                 .name           = (char *) "remote-config",
 237                 .has_arg        = required_argument,
 238                 .val            = 'R',
 239         },
 240         {
 241                 .name           = (char *) "cpuclock-test",
 242                 .has_arg        = no_argument,
 243                 .val            = 'T',
 244         },
 245         {
 246                 .name           = (char *) "crctest",
 247                 .has_arg        = optional_argument,
 248                 .val            = 'G',
 249         },
 250         {
 251                 .name           = (char *) "memcpytest",
 252                 .has_arg        = optional_argument,
 253                 .val            = 'M',
 254         },
 255         {
 256                 .name           = (char *) "idle-prof",
 257                 .has_arg        = required_argument,
 258                 .val            = 'I',
 259         },
 260         {
 261                 .name           = (char *) "status-interval",
 262                 .has_arg        = required_argument,
 263                 .val            = 'L',
 264         },
 265         {
 266                 .name           = (char *) "trigger-file",
 267                 .has_arg        = required_argument,
 268                 .val            = 'W',
 269         },
 270         {
 271                 .name           = (char *) "trigger-timeout",
 272                 .has_arg        = required_argument,
 273                 .val            = 'B',
 274         },
 275         {
 276                 .name           = (char *) "trigger",
 277                 .has_arg        = required_argument,
 278                 .val            = 'H',
 279         },
 280         {
 281                 .name           = (char *) "trigger-remote",
 282                 .has_arg        = required_argument,
 283                 .val            = 'J',
 284         },
 285         {
 286                 .name           = (char *) "aux-path",
 287                 .has_arg        = required_argument,
 288                 .val            = 'K',
 289         },
 290         {
 291                 .name           = NULL,
 292         },
 293 };
 294
 295 void free_threads_shm(void)
 296 {
 297         if (threads) {
 298                 void *tp = threads;
 299 #ifndef CONFIG_NO_SHM
 300                 struct shmid_ds sbuf;
 301
 302                 threads = NULL;
 303                 shmdt(tp);
 304                 shmctl(shm_id, IPC_RMID, &sbuf);
 305                 shm_id = -1;
 306 #else
 307                 threads = NULL;
 308                 free(tp);
 309 #endif
 310         }
 311 }
 312
 313 static void free_shm(void)
 314 {
 315         if (threads) {
 316                 flow_exit();
 317                 fio_debug_jobp = NULL;
 318                 fio_warned = NULL;
 319                 free_threads_shm();
 320         }
 321
 322         free(trigger_file);
 323         free(trigger_cmd);
 324         free(trigger_remote_cmd);
 325         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 326
 327         options_free(fio_options, &def_thread.o);
 328         fio_filelock_exit();
 329         file_hash_exit();
 330         scleanup();
 331 }
 332
 333 /*
 334  * The thread area is shared between the main process and the job
 335  * threads/processes. So setup a shared memory segment that will hold
 336  * all the job info. We use the end of the region for keeping track of
 337  * open files across jobs, for file sharing.
 338  */
 339 static int setup_thread_area(void)
 340 {
 341         int i;
 342
 343         if (threads)
 344                 return 0;
 345
 346         /*
 347          * 1024 is too much on some machines, scale max_jobs if
 348          * we get a failure that looks like too large a shm segment
 349          */
 350         do {
 351                 size_t size = max_jobs * sizeof(struct thread_data);
 352
 353                 size += 2 * sizeof(unsigned int);
 354
 355 #ifndef CONFIG_NO_SHM
 356                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 357                 if (shm_id != -1)
 358                         break;
 359                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 360                         perror("shmget");
 361                         break;
 362                 }
 363 #else
 364                 threads = malloc(size);
 365                 if (threads)
 366                         break;
 367 #endif
 368
 369                 max_jobs >>= 1;
 370         } while (max_jobs);
 371
 372 #ifndef CONFIG_NO_SHM
 373         if (shm_id == -1)
 374                 return 1;
 375
 376         threads = shmat(shm_id, NULL, 0);
 377         if (threads == (void *) -1) {
 378                 perror("shmat");
 379                 return 1;
 380         }
 381         if (shm_attach_to_open_removed())
 382                 shmctl(shm_id, IPC_RMID, NULL);
 383 #endif
 384
 385         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 386         for (i = 0; i < max_jobs; i++)
 387                 DRD_IGNORE_VAR(threads[i]);
 388         fio_debug_jobp = (unsigned int *)(threads + max_jobs);
 389         *fio_debug_jobp = -1;
 390         fio_warned = fio_debug_jobp + 1;
 391         *fio_warned = 0;
 392
 393         flow_init();
 394
 395         return 0;
 396 }
 397
 398 static void dump_print_option(struct print_option *p)
 399 {
 400         const char *delim;
 401
 402         if (!strcmp("description", p->name))
 403                 delim = "\"";
 404         else
 405                 delim = "";
 406
 407         log_info("--%s%s", p->name, p->value ? "" : " ");
 408         if (p->value)
 409                 log_info("=%s%s%s ", delim, p->value, delim);
 410 }
 411
 412 static void dump_opt_list(struct thread_data *td)
 413 {
 414         struct flist_head *entry;
 415         struct print_option *p;
 416
 417         if (flist_empty(&td->opt_list))
 418                 return;
 419
 420         flist_for_each(entry, &td->opt_list) {
 421                 p = flist_entry(entry, struct print_option, list);
 422                 dump_print_option(p);
 423         }
 424 }
 425
 426 static void fio_dump_options_free(struct thread_data *td)
 427 {
 428         while (!flist_empty(&td->opt_list)) {
 429                 struct print_option *p;
 430
 431                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 432                 flist_del_init(&p->list);
 433                 free(p->name);
 434                 free(p->value);
 435                 free(p);
 436         }
 437 }
 438
 439 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 440 {
 441         struct flist_head *entry;
 442
 443         if (flist_empty(&src->opt_list))
 444                 return;
 445
 446         flist_for_each(entry, &src->opt_list) {
 447                 struct print_option *srcp, *dstp;
 448
 449                 srcp = flist_entry(entry, struct print_option, list);
 450                 dstp = malloc(sizeof(*dstp));
 451                 dstp->name = strdup(srcp->name);
 452                 if (srcp->value)
 453                         dstp->value = strdup(srcp->value);
 454                 else
 455                         dstp->value = NULL;
 456                 flist_add_tail(&dstp->list, &dst->opt_list);
 457         }
 458 }
 459
 460 /*
 461  * Return a free job structure.
 462  */
 463 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 464                                        bool preserve_eo, const char *jobname)
 465 {
 466         struct thread_data *td;
 467
 468         if (global)
 469                 return &def_thread;
 470         if (setup_thread_area()) {
 471                 log_err("error: failed to setup shm segment\n");
 472                 return NULL;
 473         }
 474         if (thread_number >= max_jobs) {
 475                 log_err("error: maximum number of jobs (%d) reached.\n",
 476                                 max_jobs);
 477                 return NULL;
 478         }
 479
 480         td = &threads[thread_number++];
 481         *td = *parent;
 482
 483         INIT_FLIST_HEAD(&td->opt_list);
 484         if (parent != &def_thread)
 485                 copy_opt_list(td, parent);
 486
 487         td->io_ops = NULL;
 488         td->io_ops_init = 0;
 489         if (!preserve_eo)
 490                 td->eo = NULL;
 491
 492         td->o.uid = td->o.gid = -1U;
 493
 494         dup_files(td, parent);
 495         fio_options_mem_dupe(td);
 496
 497         profile_add_hooks(td);
 498
 499         td->thread_number = thread_number;
 500         td->subjob_number = 0;
 501
 502         if (jobname)
 503                 td->o.name = strdup(jobname);
 504
 505         if (!parent->o.group_reporting || parent == &def_thread)
 506                 stat_number++;
 507
 508         return td;
 509 }
 510
 511 static void put_job(struct thread_data *td)
 512 {
 513         if (td == &def_thread)
 514                 return;
 515
 516         profile_td_exit(td);
 517         flow_exit_job(td);
 518
 519         if (td->error)
 520                 log_info("fio: %s\n", td->verror);
 521
 522         fio_options_free(td);
 523         fio_dump_options_free(td);
 524         if (td->io_ops)
 525                 free_ioengine(td);
 526
 527         if (td->o.name)
 528                 free(td->o.name);
 529
 530         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 531         thread_number--;
 532 }
 533
 534 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 535 {
 536         unsigned int bs = td->o.min_bs[ddir];
 537
 538         assert(ddir_rw(ddir));
 539
 540         if (td->o.rate[ddir])
 541                 td->rate_bps[ddir] = td->o.rate[ddir];
 542         else
 543                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 544
 545         if (!td->rate_bps[ddir]) {
 546                 log_err("rate lower than supported\n");
 547                 return -1;
 548         }
 549
 550         td->rate_next_io_time[ddir] = 0;
 551         td->rate_io_issue_bytes[ddir] = 0;
 552         td->last_usec[ddir] = 0;
 553         return 0;
 554 }
 555
 556 static int setup_rate(struct thread_data *td)
 557 {
 558         int ret = 0;
 559
 560         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 561                 ret = __setup_rate(td, DDIR_READ);
 562         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 563                 ret |= __setup_rate(td, DDIR_WRITE);
 564         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 565                 ret |= __setup_rate(td, DDIR_TRIM);
 566
 567         return ret;
 568 }
 569
 570 static int fixed_block_size(struct thread_options *o)
 571 {
 572         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 573                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 574                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 575                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 576                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 577 }
 578
 579
 580 static unsigned long long get_rand_start_delay(struct thread_data *td)
 581 {
 582         unsigned long long delayrange;
 583         uint64_t frand_max;
 584         unsigned long r;
 585
 586         delayrange = td->o.start_delay_high - td->o.start_delay;
 587
 588         frand_max = rand_max(&td->delay_state);
 589         r = __rand(&td->delay_state);
 590         delayrange = (unsigned long long) ((double) delayrange * (r / (frand_max + 1.0)));
 591
 592         delayrange += td->o.start_delay;
 593         return delayrange;
 594 }
 595
 596 /*
 597  * <3 Johannes
 598  */
 599 static unsigned int gcd(unsigned int m, unsigned int n)
 600 {
 601         if (!n)
 602                 return m;
 603
 604         return gcd(n, m % n);
 605 }
 606
 607 /*
 608  * Lazy way of fixing up options that depend on each other. We could also
 609  * define option callback handlers, but this is easier.
 610  */
 611 static int fixup_options(struct thread_data *td)
 612 {
 613         struct thread_options *o = &td->o;
 614         int ret = 0;
 615
 616 #ifndef CONFIG_PSHARED
 617         if (!o->use_thread) {
 618                 log_info("fio: this platform does not support process shared"
 619                          " mutexes, forcing use of threads. Use the 'thread'"
 620                          " option to get rid of this warning.\n");
 621                 o->use_thread = 1;
 622                 ret = warnings_fatal;
 623         }
 624 #endif
 625
 626         if (o->write_iolog_file && o->read_iolog_file) {
 627                 log_err("fio: read iolog overrides write_iolog\n");
 628                 free(o->write_iolog_file);
 629                 o->write_iolog_file = NULL;
 630                 ret = warnings_fatal;
 631         }
 632
 633         /*
 634          * only really works with 1 file
 635          */
 636         if (o->zone_size && o->open_files > 1)
 637                 o->zone_size = 0;
 638
 639         /*
 640          * If zone_range isn't specified, backward compatibility dictates it
 641          * should be made equal to zone_size.
 642          */
 643         if (o->zone_size && !o->zone_range)
 644                 o->zone_range = o->zone_size;
 645
 646         /*
 647          * Reads can do overwrites, we always need to pre-create the file
 648          */
 649         if (td_read(td))
 650                 o->overwrite = 1;
 651
 652         if (!o->min_bs[DDIR_READ])
 653                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 654         if (!o->max_bs[DDIR_READ])
 655                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 656         if (!o->min_bs[DDIR_WRITE])
 657                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 658         if (!o->max_bs[DDIR_WRITE])
 659                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 660         if (!o->min_bs[DDIR_TRIM])
 661                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 662         if (!o->max_bs[DDIR_TRIM])
 663                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 664
 665         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 666         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 667
 668         /*
 669          * For random IO, allow blockalign offset other than min_bs.
 670          */
 671         if (!o->ba[DDIR_READ] || !td_random(td))
 672                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 673         if (!o->ba[DDIR_WRITE] || !td_random(td))
 674                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 675         if (!o->ba[DDIR_TRIM] || !td_random(td))
 676                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 677
 678         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 679             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 680             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 681             !o->norandommap) {
 682                 log_err("fio: Any use of blockalign= turns off randommap\n");
 683                 o->norandommap = 1;
 684                 ret = warnings_fatal;
 685         }
 686
 687         if (!o->file_size_high)
 688                 o->file_size_high = o->file_size_low;
 689
 690         if (o->start_delay_high)
 691                 o->start_delay = get_rand_start_delay(td);
 692
 693         if (o->norandommap && o->verify != VERIFY_NONE
 694             && !fixed_block_size(o))  {
 695                 log_err("fio: norandommap given for variable block sizes, "
 696                         "verify limited\n");
 697                 ret = warnings_fatal;
 698         }
 699         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 700                 log_err("fio: bs_unaligned may not work with raw io\n");
 701
 702         /*
 703          * thinktime_spin must be less than thinktime
 704          */
 705         if (o->thinktime_spin > o->thinktime)
 706                 o->thinktime_spin = o->thinktime;
 707
 708         /*
 709          * The low water mark cannot be bigger than the iodepth
 710          */
 711         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 712                 o->iodepth_low = o->iodepth;
 713
 714         /*
 715          * If batch number isn't set, default to the same as iodepth
 716          */
 717         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 718                 o->iodepth_batch = o->iodepth;
 719
 720         /*
 721          * If max batch complete number isn't set or set incorrectly,
 722          * default to the same as iodepth_batch_complete_min
 723          */
 724         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 725                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 726
 727         /*
 728          * There's no need to check for in-flight overlapping IOs if the job
 729          * isn't changing data or the maximum iodepth is guaranteed to be 1
 730          */
 731         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 732             (!(td_write(td) || td_trim(td)) || o->iodepth == 1))
 733                 o->serialize_overlap = 0;
 734         /*
 735          * Currently can't check for overlaps in offload mode
 736          */
 737         if (o->serialize_overlap && o->io_submit_mode == IO_MODE_OFFLOAD) {
 738                 log_err("fio: checking for in-flight overlaps when the "
 739                         "io_submit_mode is offload is not supported\n");
 740                 o->serialize_overlap = 0;
 741                 ret = warnings_fatal;
 742         }
 743
 744         if (o->nr_files > td->files_index)
 745                 o->nr_files = td->files_index;
 746
 747         if (o->open_files > o->nr_files || !o->open_files)
 748                 o->open_files = o->nr_files;
 749
 750         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 751             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 752             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 753             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 754                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 755                 ret = 1;
 756         }
 757         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
 758             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
 759             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
 760             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
 761             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
 762             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
 763                 log_err("fio: minimum rate exceeds rate\n");
 764                 ret = 1;
 765         }
 766
 767         if (!o->timeout && o->time_based) {
 768                 log_err("fio: time_based requires a runtime/timeout setting\n");
 769                 o->time_based = 0;
 770                 ret = warnings_fatal;
 771         }
 772
 773         if (o->fill_device && !o->size)
 774                 o->size = -1ULL;
 775
 776         if (o->verify != VERIFY_NONE) {
 777                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 778                     (o->filename ||
 779                      !(o->unique_filename &&
 780                        strstr(o->filename_format, "$jobname") &&
 781                        strstr(o->filename_format, "$jobnum") &&
 782                        strstr(o->filename_format, "$filenum")))) {
 783                         log_info("fio: multiple writers may overwrite blocks "
 784                                 "that belong to other jobs. This can cause "
 785                                 "verification failures.\n");
 786                         ret = warnings_fatal;
 787                 }
 788
 789                 /*
 790                  * Warn if verification is requested but no verification of any
 791                  * kind can be started due to time constraints
 792                  */
 793                 if (td_write(td) && o->do_verify && o->timeout &&
 794                     o->time_based && !td_read(td) && !o->verify_backlog) {
 795                         log_info("fio: verification read phase will never "
 796                                  "start because write phase uses all of "
 797                                  "runtime\n");
 798                         ret = warnings_fatal;
 799                 }
 800
 801                 if (!fio_option_is_set(o, refill_buffers))
 802                         o->refill_buffers = 1;
 803
 804                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 805                     !o->verify_interval)
 806                         o->verify_interval = o->min_bs[DDIR_WRITE];
 807
 808                 /*
 809                  * Verify interval must be smaller or equal to the
 810                  * write size.
 811                  */
 812                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 813                         o->verify_interval = o->min_bs[DDIR_WRITE];
 814                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 815                         o->verify_interval = o->min_bs[DDIR_READ];
 816
 817                 /*
 818                  * Verify interval must be a factor of both min and max
 819                  * write size
 820                  */
 821                 if (!o->verify_interval ||
 822                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 823                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 824                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 825                                                         o->max_bs[DDIR_WRITE]);
 826         }
 827
 828         if (o->pre_read) {
 829                 if (o->invalidate_cache)
 830                         o->invalidate_cache = 0;
 831                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 832                         log_info("fio: cannot pre-read files with an IO engine"
 833                                  " that isn't seekable. Pre-read disabled.\n");
 834                         ret = warnings_fatal;
 835                 }
 836         }
 837
 838         if (!o->unit_base) {
 839                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 840                         o->unit_base = 1;
 841                 else
 842                         o->unit_base = 8;
 843         }
 844
 845 #ifndef FIO_HAVE_ANY_FALLOCATE
 846         /* Platform doesn't support any fallocate so force it to none */
 847         o->fallocate_mode = FIO_FALLOCATE_NONE;
 848 #endif
 849
 850 #ifndef CONFIG_FDATASYNC
 851         if (o->fdatasync_blocks) {
 852                 log_info("fio: this platform does not support fdatasync()"
 853                          " falling back to using fsync().  Use the 'fsync'"
 854                          " option instead of 'fdatasync' to get rid of"
 855                          " this warning\n");
 856                 o->fsync_blocks = o->fdatasync_blocks;
 857                 o->fdatasync_blocks = 0;
 858                 ret = warnings_fatal;
 859         }
 860 #endif
 861
 862 #ifdef WIN32
 863         /*
 864          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 865          * so fail if we're passed those flags
 866          */
 867         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 868                 log_err("fio: Windows does not support direct or non-buffered io with"
 869                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 870                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 871                 ret = 1;
 872         }
 873 #endif
 874
 875         /*
 876          * For fully compressible data, just zero them at init time.
 877          * It's faster than repeatedly filling it. For non-zero
 878          * compression, we should have refill_buffers set. Set it, unless
 879          * the job file already changed it.
 880          */
 881         if (o->compress_percentage) {
 882                 if (o->compress_percentage == 100) {
 883                         o->zero_buffers = 1;
 884                         o->compress_percentage = 0;
 885                 } else if (!fio_option_is_set(o, refill_buffers)) {
 886                         o->refill_buffers = 1;
 887                         td->flags |= TD_F_REFILL_BUFFERS;
 888                 }
 889         }
 890
 891         /*
 892          * Using a non-uniform random distribution excludes usage of
 893          * a random map
 894          */
 895         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 896                 o->norandommap = 1;
 897
 898         /*
 899          * If size is set but less than the min block size, complain
 900          */
 901         if (o->size && o->size < td_min_bs(td)) {
 902                 log_err("fio: size too small, must not be less than minimum block size: %llu < %u\n",
 903                         (unsigned long long) o->size, td_min_bs(td));
 904                 ret = 1;
 905         }
 906
 907         /*
 908          * O_ATOMIC implies O_DIRECT
 909          */
 910         if (o->oatomic)
 911                 o->odirect = 1;
 912
 913         /*
 914          * If randseed is set, that overrides randrepeat
 915          */
 916         if (fio_option_is_set(o, rand_seed))
 917                 o->rand_repeatable = 0;
 918
 919         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 920                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 921                 ret = 1;
 922         }
 923
 924         if (fio_option_is_set(o, gtod_cpu)) {
 925                 fio_gtod_init();
 926                 fio_gtod_set_cpu(o->gtod_cpu);
 927                 fio_gtod_offload = 1;
 928         }
 929
 930         td->loops = o->loops;
 931         if (!td->loops)
 932                 td->loops = 1;
 933
 934         if (o->block_error_hist && o->nr_files != 1) {
 935                 log_err("fio: block error histogram only available "
 936                         "with a single file per job, but %d files "
 937                         "provided\n", o->nr_files);
 938                 ret = 1;
 939         }
 940
 941         if (fio_option_is_set(o, clat_percentiles) &&
 942             !fio_option_is_set(o, lat_percentiles)) {
 943                 o->lat_percentiles = !o->clat_percentiles;
 944         } else if (fio_option_is_set(o, lat_percentiles) &&
 945                    !fio_option_is_set(o, clat_percentiles)) {
 946                 o->clat_percentiles = !o->lat_percentiles;
 947         } else if (fio_option_is_set(o, lat_percentiles) &&
 948                    fio_option_is_set(o, clat_percentiles) &&
 949                    o->lat_percentiles && o->clat_percentiles) {
 950                 log_err("fio: lat_percentiles and clat_percentiles are "
 951                         "mutually exclusive\n");
 952                 ret = 1;
 953         }
 954
 955         if (o->disable_lat)
 956                 o->lat_percentiles = 0;
 957         if (o->disable_clat)
 958                 o->clat_percentiles = 0;
 959
 960         /*
 961          * Fix these up to be nsec internally
 962          */
 963         o->max_latency *= 1000ULL;
 964         o->latency_target *= 1000ULL;
 965         o->latency_window *= 1000ULL;
 966
 967         return ret;
 968 }
 969
 970 static void init_rand_file_service(struct thread_data *td)
 971 {
 972         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 973         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 974
 975         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 976                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 977                 zipf_disable_hash(&td->next_file_zipf);
 978         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 979                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 980                 zipf_disable_hash(&td->next_file_zipf);
 981         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 982                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
 983                 gauss_disable_hash(&td->next_file_gauss);
 984         }
 985 }
 986
 987 void td_fill_verify_state_seed(struct thread_data *td)
 988 {
 989         bool use64;
 990
 991         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 992                 use64 = true;
 993         else
 994                 use64 = false;
 995
 996         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
 997                 use64);
 998 }
 999
1000 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
1001 {
1002         int i;
1003
1004         /*
1005          * trimwrite is special in that we need to generate the same
1006          * offsets to get the "write after trim" effect. If we are
1007          * using bssplit to set buffer length distributions, ensure that
1008          * we seed the trim and write generators identically.
1009          */
1010         if (td_trimwrite(td)) {
1011                 init_rand_seed(&td->bsrange_state[DDIR_READ], td->rand_seeds[FIO_RAND_BS_OFF], use64);
1012                 init_rand_seed(&td->bsrange_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_BS1_OFF], use64);
1013                 init_rand_seed(&td->bsrange_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_BS1_OFF], use64);
1014         } else {
1015                 init_rand_seed(&td->bsrange_state[DDIR_READ], td->rand_seeds[FIO_RAND_BS_OFF], use64);
1016                 init_rand_seed(&td->bsrange_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_BS1_OFF], use64);
1017                 init_rand_seed(&td->bsrange_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_BS2_OFF], use64);
1018         }
1019
1020         td_fill_verify_state_seed(td);
1021         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1022
1023         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1024                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1025         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1026                 init_rand_file_service(td);
1027
1028         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1029         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1030         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1031         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1032         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1033         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1034         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1035         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1036
1037         if (!td_random(td))
1038                 return;
1039
1040         if (td->o.rand_repeatable)
1041                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1042
1043         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1044
1045         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1046                 struct frand_state *s = &td->seq_rand_state[i];
1047
1048                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1049         }
1050 }
1051
1052 void td_fill_rand_seeds(struct thread_data *td)
1053 {
1054         bool use64;
1055
1056         if (td->o.allrand_repeatable) {
1057                 unsigned int i;
1058
1059                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1060                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1061                                 + i;
1062         }
1063
1064         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1065                 use64 = true;
1066         else
1067                 use64 = false;
1068
1069         td_fill_rand_seeds_internal(td, use64);
1070
1071         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1072         frand_copy(&td->buf_state_prev, &td->buf_state);
1073 }
1074
1075 /*
1076  * Initializes the ioengine configured for a job, if it has not been done so
1077  * already.
1078  */
1079 int ioengine_load(struct thread_data *td)
1080 {
1081         if (!td->o.ioengine) {
1082                 log_err("fio: internal fault, no IO engine specified\n");
1083                 return 1;
1084         }
1085
1086         if (td->io_ops) {
1087                 struct ioengine_ops *ops;
1088                 void *dlhandle;
1089
1090                 /* An engine is loaded, but the requested ioengine
1091                  * may have changed.
1092                  */
1093                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1094                         /* The right engine is already loaded */
1095                         return 0;
1096                 }
1097
1098                 /*
1099                  * Name of file and engine may be different, load ops
1100                  * for this name and see if they match. If they do, then
1101                  * the engine is unchanged.
1102                  */
1103                 dlhandle = td->io_ops_dlhandle;
1104                 ops = load_ioengine(td);
1105                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle) {
1106                         if (dlhandle)
1107                                 dlclose(dlhandle);
1108                         return 0;
1109                 }
1110
1111                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1112                         dlclose(dlhandle);
1113
1114                 /* Unload the old engine. */
1115                 free_ioengine(td);
1116         }
1117
1118         td->io_ops = load_ioengine(td);
1119         if (!td->io_ops) {
1120                 log_err("fio: failed to load engine\n");
1121                 return 1;
1122         }
1123
1124         if (td->io_ops->option_struct_size && td->io_ops->options) {
1125                 /*
1126                  * In cases where td->eo is set, clone it for a child thread.
1127                  * This requires that the parent thread has the same ioengine,
1128                  * but that requirement must be enforced by the code which
1129                  * cloned the thread.
1130                  */
1131                 void *origeo = td->eo;
1132                 /*
1133                  * Otherwise use the default thread options.
1134                  */
1135                 if (!origeo && td != &def_thread && def_thread.eo &&
1136                     def_thread.io_ops->options == td->io_ops->options)
1137                         origeo = def_thread.eo;
1138
1139                 options_init(td->io_ops->options);
1140                 td->eo = malloc(td->io_ops->option_struct_size);
1141                 /*
1142                  * Use the default thread as an option template if this uses the
1143                  * same options structure and there are non-default options
1144                  * used.
1145                  */
1146                 if (origeo) {
1147                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1148                         options_mem_dupe(td->io_ops->options, td->eo);
1149                 } else {
1150                         memset(td->eo, 0, td->io_ops->option_struct_size);
1151                         fill_default_options(td->eo, td->io_ops->options);
1152                 }
1153                 *(struct thread_data **)td->eo = td;
1154         }
1155
1156         if (td->o.odirect)
1157                 td->io_ops->flags |= FIO_RAWIO;
1158
1159         td_set_ioengine_flags(td);
1160         return 0;
1161 }
1162
1163 static void init_flags(struct thread_data *td)
1164 {
1165         struct thread_options *o = &td->o;
1166         int i;
1167
1168         if (o->verify_backlog)
1169                 td->flags |= TD_F_VER_BACKLOG;
1170         if (o->trim_backlog)
1171                 td->flags |= TD_F_TRIM_BACKLOG;
1172         if (o->read_iolog_file)
1173                 td->flags |= TD_F_READ_IOLOG;
1174         if (o->refill_buffers)
1175                 td->flags |= TD_F_REFILL_BUFFERS;
1176         /*
1177          * Always scramble buffers if asked to
1178          */
1179         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1180                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1181         /*
1182          * But also scramble buffers, unless we were explicitly asked
1183          * to zero them.
1184          */
1185         if (o->scramble_buffers && !(o->zero_buffers &&
1186             fio_option_is_set(o, zero_buffers)))
1187                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1188         if (o->verify != VERIFY_NONE)
1189                 td->flags |= TD_F_VER_NONE;
1190
1191         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1192                 td->flags |= TD_F_NEED_LOCK;
1193
1194         if (o->mem_type == MEM_CUDA_MALLOC)
1195                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1196
1197         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1198                 if (option_check_rate(td, i)) {
1199                         td->flags |= TD_F_CHECK_RATE;
1200                         break;
1201                 }
1202         }
1203 }
1204
1205 static int setup_random_seeds(struct thread_data *td)
1206 {
1207         unsigned long seed;
1208         unsigned int i;
1209
1210         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1211                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1212                 if (!ret)
1213                         td_fill_rand_seeds(td);
1214                 return ret;
1215         }
1216
1217         seed = td->o.rand_seed;
1218         for (i = 0; i < 4; i++)
1219                 seed *= 0x9e370001UL;
1220
1221         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1222                 td->rand_seeds[i] = seed * td->thread_number + i;
1223                 seed *= 0x9e370001UL;
1224         }
1225
1226         td_fill_rand_seeds(td);
1227         return 0;
1228 }
1229
1230 enum {
1231         FPRE_NONE = 0,
1232         FPRE_JOBNAME,
1233         FPRE_JOBNUM,
1234         FPRE_FILENUM
1235 };
1236
1237 static struct fpre_keyword {
1238         const char *keyword;
1239         size_t strlen;
1240         int key;
1241 } fpre_keywords[] = {
1242         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1243         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1244         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1245         { .keyword = NULL, },
1246         };
1247
1248 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1249                            const char *jobname, int jobnum, int filenum)
1250 {
1251         struct fpre_keyword *f;
1252         char copy[PATH_MAX];
1253         size_t dst_left = PATH_MAX - 1;
1254
1255         if (!o->filename_format || !strlen(o->filename_format)) {
1256                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1257                 return buf;
1258         }
1259
1260         for (f = &fpre_keywords[0]; f->keyword; f++)
1261                 f->strlen = strlen(f->keyword);
1262
1263         buf[buf_size - 1] = '\0';
1264         strncpy(buf, o->filename_format, buf_size - 1);
1265
1266         memset(copy, 0, sizeof(copy));
1267         for (f = &fpre_keywords[0]; f->keyword; f++) {
1268                 do {
1269                         size_t pre_len, post_start = 0;
1270                         char *str, *dst = copy;
1271
1272                         str = strcasestr(buf, f->keyword);
1273                         if (!str)
1274                                 break;
1275
1276                         pre_len = str - buf;
1277                         if (strlen(str) != f->strlen)
1278                                 post_start = pre_len + f->strlen;
1279
1280                         if (pre_len) {
1281                                 strncpy(dst, buf, pre_len);
1282                                 dst += pre_len;
1283                                 dst_left -= pre_len;
1284                         }
1285
1286                         switch (f->key) {
1287                         case FPRE_JOBNAME: {
1288                                 int ret;
1289
1290                                 ret = snprintf(dst, dst_left, "%s", jobname);
1291                                 if (ret < 0)
1292                                         break;
1293                                 else if (ret > dst_left) {
1294                                         log_err("fio: truncated filename\n");
1295                                         dst += dst_left;
1296                                         dst_left = 0;
1297                                 } else {
1298                                         dst += ret;
1299                                         dst_left -= ret;
1300                                 }
1301                                 break;
1302                                 }
1303                         case FPRE_JOBNUM: {
1304                                 int ret;
1305
1306                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1307                                 if (ret < 0)
1308                                         break;
1309                                 else if (ret > dst_left) {
1310                                         log_err("fio: truncated filename\n");
1311                                         dst += dst_left;
1312                                         dst_left = 0;
1313                                 } else {
1314                                         dst += ret;
1315                                         dst_left -= ret;
1316                                 }
1317                                 break;
1318                                 }
1319                         case FPRE_FILENUM: {
1320                                 int ret;
1321
1322                                 ret = snprintf(dst, dst_left, "%d", filenum);
1323                                 if (ret < 0)
1324                                         break;
1325                                 else if (ret > dst_left) {
1326                                         log_err("fio: truncated filename\n");
1327                                         dst += dst_left;
1328                                         dst_left = 0;
1329                                 } else {
1330                                         dst += ret;
1331                                         dst_left -= ret;
1332                                 }
1333                                 break;
1334                                 }
1335                         default:
1336                                 assert(0);
1337                                 break;
1338                         }
1339
1340                         if (post_start)
1341                                 strncpy(dst, buf + post_start, dst_left);
1342
1343                         strncpy(buf, copy, buf_size - 1);
1344                 } while (1);
1345         }
1346
1347         return buf;
1348 }
1349
1350 bool parse_dryrun(void)
1351 {
1352         return dump_cmdline || parse_only;
1353 }
1354
1355 static void gen_log_name(char *name, size_t size, const char *logtype,
1356                          const char *logname, unsigned int num,
1357                          const char *suf, int per_job)
1358 {
1359         if (per_job)
1360                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1361         else
1362                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1363 }
1364
1365 static int check_waitees(char *waitee)
1366 {
1367         struct thread_data *td;
1368         int i, ret = 0;
1369
1370         for_each_td(td, i) {
1371                 if (td->subjob_number)
1372                         continue;
1373
1374                 ret += !strcmp(td->o.name, waitee);
1375         }
1376
1377         return ret;
1378 }
1379
1380 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1381 {
1382         int nw;
1383
1384         if (!o->wait_for)
1385                 return true;
1386
1387         if (!strcmp(jobname, o->wait_for)) {
1388                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1389                                 jobname, o->wait_for);
1390                 return false;
1391         }
1392
1393         if (!(nw = check_waitees(o->wait_for))) {
1394                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1395                 return false;
1396         }
1397
1398         if (nw > 1) {
1399                 log_err("%s: multiple waitees %s found,\n"
1400                         "please avoid duplicates when using wait_for option.\n",
1401                                 jobname, o->wait_for);
1402                 return false;
1403         }
1404
1405         return true;
1406 }
1407
1408 /*
1409  * Adds a job to the list of things todo. Sanitizes the various options
1410  * to make sure we don't have conflicts, and initializes various
1411  * members of td.
1412  */
1413 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1414                    int recursed, int client_type)
1415 {
1416         unsigned int i;
1417         char fname[PATH_MAX];
1418         int numjobs, file_alloced;
1419         struct thread_options *o = &td->o;
1420         char logname[PATH_MAX + 32];
1421
1422         /*
1423          * the def_thread is just for options, it's not a real job
1424          */
1425         if (td == &def_thread)
1426                 return 0;
1427
1428         init_flags(td);
1429
1430         /*
1431          * if we are just dumping the output command line, don't add the job
1432          */
1433         if (parse_dryrun()) {
1434                 put_job(td);
1435                 return 0;
1436         }
1437
1438         td->client_type = client_type;
1439
1440         if (profile_td_init(td))
1441                 goto err;
1442
1443         if (ioengine_load(td))
1444                 goto err;
1445
1446         file_alloced = 0;
1447         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1448                 file_alloced = 1;
1449
1450                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1451                         add_file(td, jobname, job_add_num, 0);
1452                 else {
1453                         for (i = 0; i < o->nr_files; i++)
1454                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1455                 }
1456         }
1457
1458         if (fixup_options(td))
1459                 goto err;
1460
1461         /*
1462          * Belongs to fixup_options, but o->name is not necessarily set as yet
1463          */
1464         if (!wait_for_ok(jobname, o))
1465                 goto err;
1466
1467         flow_init_job(td);
1468
1469         /*
1470          * IO engines only need this for option callbacks, and the address may
1471          * change in subprocesses.
1472          */
1473         if (td->eo)
1474                 *(struct thread_data **)td->eo = NULL;
1475
1476         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1477                 struct fio_file *f;
1478
1479                 for_each_file(td, f, i)
1480                         f->real_file_size = -1ULL;
1481         }
1482
1483         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1484
1485         td->ts.clat_percentiles = o->clat_percentiles;
1486         td->ts.lat_percentiles = o->lat_percentiles;
1487         td->ts.percentile_precision = o->percentile_precision;
1488         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1489         td->ts.sig_figs = o->sig_figs;
1490
1491         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1492                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1493                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1494                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1495                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1496                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1497         }
1498         td->ts.sync_stat.min_val = ULONG_MAX;
1499         td->ddir_seq_nr = o->ddir_seq_nr;
1500
1501         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1502                 prev_group_jobs = 0;
1503                 groupid++;
1504                 if (groupid == INT_MAX) {
1505                         log_err("fio: too many groups defined\n");
1506                         goto err;
1507                 }
1508         }
1509
1510         td->groupid = groupid;
1511         prev_group_jobs++;
1512
1513         if (setup_random_seeds(td)) {
1514                 td_verror(td, errno, "setup_random_seeds");
1515                 goto err;
1516         }
1517
1518         if (setup_rate(td))
1519                 goto err;
1520
1521         if (o->write_lat_log) {
1522                 struct log_params p = {
1523                         .td = td,
1524                         .avg_msec = o->log_avg_msec,
1525                         .hist_msec = o->log_hist_msec,
1526                         .hist_coarseness = o->log_hist_coarseness,
1527                         .log_type = IO_LOG_TYPE_LAT,
1528                         .log_offset = o->log_offset,
1529                         .log_gz = o->log_gz,
1530                         .log_gz_store = o->log_gz_store,
1531                 };
1532                 const char *pre = o->lat_log_file ? o->lat_log_file : o->name;
1533                 const char *suf;
1534
1535                 if (p.log_gz_store)
1536                         suf = "log.fz";
1537                 else
1538                         suf = "log";
1539
1540                 gen_log_name(logname, sizeof(logname), "lat", pre,
1541                                 td->thread_number, suf, o->per_job_logs);
1542                 setup_log(&td->lat_log, &p, logname);
1543
1544                 gen_log_name(logname, sizeof(logname), "slat", pre,
1545                                 td->thread_number, suf, o->per_job_logs);
1546                 setup_log(&td->slat_log, &p, logname);
1547
1548                 gen_log_name(logname, sizeof(logname), "clat", pre,
1549                                 td->thread_number, suf, o->per_job_logs);
1550                 setup_log(&td->clat_log, &p, logname);
1551         }
1552
1553         if (o->write_hist_log) {
1554                 struct log_params p = {
1555                         .td = td,
1556                         .avg_msec = o->log_avg_msec,
1557                         .hist_msec = o->log_hist_msec,
1558                         .hist_coarseness = o->log_hist_coarseness,
1559                         .log_type = IO_LOG_TYPE_HIST,
1560                         .log_offset = o->log_offset,
1561                         .log_gz = o->log_gz,
1562                         .log_gz_store = o->log_gz_store,
1563                 };
1564                 const char *pre = o->hist_log_file ? o->hist_log_file : o->name;
1565                 const char *suf;
1566
1567 #ifndef CONFIG_ZLIB
1568                 if (td->client_type) {
1569                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1570                         goto err;
1571                 }
1572 #endif
1573
1574                 if (p.log_gz_store)
1575                         suf = "log.fz";
1576                 else
1577                         suf = "log";
1578
1579                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1580                                 td->thread_number, suf, o->per_job_logs);
1581                 setup_log(&td->clat_hist_log, &p, logname);
1582         }
1583
1584         if (o->write_bw_log) {
1585                 struct log_params p = {
1586                         .td = td,
1587                         .avg_msec = o->log_avg_msec,
1588                         .hist_msec = o->log_hist_msec,
1589                         .hist_coarseness = o->log_hist_coarseness,
1590                         .log_type = IO_LOG_TYPE_BW,
1591                         .log_offset = o->log_offset,
1592                         .log_gz = o->log_gz,
1593                         .log_gz_store = o->log_gz_store,
1594                 };
1595                 const char *pre = o->bw_log_file ? o->bw_log_file : o->name;
1596                 const char *suf;
1597
1598                 if (fio_option_is_set(o, bw_avg_time))
1599                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1600                 else
1601                         o->bw_avg_time = p.avg_msec;
1602
1603                 p.hist_msec = o->log_hist_msec;
1604                 p.hist_coarseness = o->log_hist_coarseness;
1605
1606                 if (p.log_gz_store)
1607                         suf = "log.fz";
1608                 else
1609                         suf = "log";
1610
1611                 gen_log_name(logname, sizeof(logname), "bw", pre,
1612                                 td->thread_number, suf, o->per_job_logs);
1613                 setup_log(&td->bw_log, &p, logname);
1614         }
1615         if (o->write_iops_log) {
1616                 struct log_params p = {
1617                         .td = td,
1618                         .avg_msec = o->log_avg_msec,
1619                         .hist_msec = o->log_hist_msec,
1620                         .hist_coarseness = o->log_hist_coarseness,
1621                         .log_type = IO_LOG_TYPE_IOPS,
1622                         .log_offset = o->log_offset,
1623                         .log_gz = o->log_gz,
1624                         .log_gz_store = o->log_gz_store,
1625                 };
1626                 const char *pre = o->iops_log_file ? o->iops_log_file : o->name;
1627                 const char *suf;
1628
1629                 if (fio_option_is_set(o, iops_avg_time))
1630                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1631                 else
1632                         o->iops_avg_time = p.avg_msec;
1633
1634                 p.hist_msec = o->log_hist_msec;
1635                 p.hist_coarseness = o->log_hist_coarseness;
1636
1637                 if (p.log_gz_store)
1638                         suf = "log.fz";
1639                 else
1640                         suf = "log";
1641
1642                 gen_log_name(logname, sizeof(logname), "iops", pre,
1643                                 td->thread_number, suf, o->per_job_logs);
1644                 setup_log(&td->iops_log, &p, logname);
1645         }
1646
1647         if (!o->name)
1648                 o->name = strdup(jobname);
1649
1650         if (output_format & FIO_OUTPUT_NORMAL) {
1651                 if (!job_add_num) {
1652                         if (is_backend && !recursed)
1653                                 fio_server_send_add_job(td);
1654
1655                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1656                                 char *c1, *c2, *c3, *c4;
1657                                 char *c5 = NULL, *c6 = NULL;
1658                                 int i2p = is_power_of_2(o->kb_base);
1659
1660                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1661                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1662                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1663                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1664
1665                                 if (!o->bs_is_seq_rand) {
1666                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1667                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1668                                 }
1669
1670                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1671                                                         td->groupid,
1672                                                         ddir_str(o->td_ddir));
1673
1674                                 if (o->bs_is_seq_rand)
1675                                         log_info("bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1676                                                         c1, c2, c3, c4);
1677                                 else
1678                                         log_info("bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1679                                                         c1, c2, c3, c4, c5, c6);
1680
1681                                 log_info("ioengine=%s, iodepth=%u\n",
1682                                                 td->io_ops->name, o->iodepth);
1683
1684                                 free(c1);
1685                                 free(c2);
1686                                 free(c3);
1687                                 free(c4);
1688                                 free(c5);
1689                                 free(c6);
1690                         }
1691                 } else if (job_add_num == 1)
1692                         log_info("...\n");
1693         }
1694
1695         if (td_steadystate_init(td))
1696                 goto err;
1697
1698         /*
1699          * recurse add identical jobs, clear numjobs and stonewall options
1700          * as they don't apply to sub-jobs
1701          */
1702         numjobs = o->numjobs;
1703         while (--numjobs) {
1704                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1705
1706                 if (!td_new)
1707                         goto err;
1708
1709                 td_new->o.numjobs = 1;
1710                 td_new->o.stonewall = 0;
1711                 td_new->o.new_group = 0;
1712                 td_new->subjob_number = numjobs;
1713                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1714                 td_new->o.ss_limit = o->ss_limit;
1715
1716                 if (file_alloced) {
1717                         if (td_new->files) {
1718                                 struct fio_file *f;
1719                                 for_each_file(td_new, f, i) {
1720                                         if (f->file_name)
1721                                                 sfree(f->file_name);
1722                                         sfree(f);
1723                                 }
1724                                 free(td_new->files);
1725                                 td_new->files = NULL;
1726                         }
1727                         td_new->files_index = 0;
1728                         td_new->files_size = 0;
1729                         if (td_new->o.filename) {
1730                                 free(td_new->o.filename);
1731                                 td_new->o.filename = NULL;
1732                         }
1733                 }
1734
1735                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1736                         goto err;
1737         }
1738
1739         return 0;
1740 err:
1741         put_job(td);
1742         return -1;
1743 }
1744
1745 /*
1746  * Parse as if 'o' was a command line
1747  */
1748 void add_job_opts(const char **o, int client_type)
1749 {
1750         struct thread_data *td, *td_parent;
1751         int i, in_global = 1;
1752         char jobname[32];
1753
1754         i = 0;
1755         td_parent = td = NULL;
1756         while (o[i]) {
1757                 if (!strncmp(o[i], "name", 4)) {
1758                         in_global = 0;
1759                         if (td)
1760                                 add_job(td, jobname, 0, 0, client_type);
1761                         td = NULL;
1762                         sprintf(jobname, "%s", o[i] + 5);
1763                 }
1764                 if (in_global && !td_parent)
1765                         td_parent = get_new_job(true, &def_thread, false, jobname);
1766                 else if (!in_global && !td) {
1767                         if (!td_parent)
1768                                 td_parent = &def_thread;
1769                         td = get_new_job(false, td_parent, false, jobname);
1770                 }
1771                 if (in_global)
1772                         fio_options_parse(td_parent, (char **) &o[i], 1);
1773                 else
1774                         fio_options_parse(td, (char **) &o[i], 1);
1775                 i++;
1776         }
1777
1778         if (td)
1779                 add_job(td, jobname, 0, 0, client_type);
1780 }
1781
1782 static int skip_this_section(const char *name)
1783 {
1784         int i;
1785
1786         if (!nr_job_sections)
1787                 return 0;
1788         if (!strncmp(name, "global", 6))
1789                 return 0;
1790
1791         for (i = 0; i < nr_job_sections; i++)
1792                 if (!strcmp(job_sections[i], name))
1793                         return 0;
1794
1795         return 1;
1796 }
1797
1798 static int is_empty_or_comment(char *line)
1799 {
1800         unsigned int i;
1801
1802         for (i = 0; i < strlen(line); i++) {
1803                 if (line[i] == ';')
1804                         return 1;
1805                 if (line[i] == '#')
1806                         return 1;
1807                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1808                         return 0;
1809         }
1810
1811         return 1;
1812 }
1813
1814 /*
1815  * This is our [ini] type file parser.
1816  */
1817 static int __parse_jobs_ini(struct thread_data *td,
1818                 char *file, int is_buf, int stonewall_flag, int type,
1819                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1820 {
1821         bool global = false;
1822         char *string;
1823         FILE *f;
1824         char *p;
1825         int ret = 0, stonewall;
1826         int first_sect = 1;
1827         int skip_fgets = 0;
1828         int inside_skip = 0;
1829         char **opts;
1830         int i, alloc_opts, num_opts;
1831
1832         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1833         assert(td || !nested);
1834
1835         if (is_buf)
1836                 f = NULL;
1837         else {
1838                 if (!strcmp(file, "-"))
1839                         f = stdin;
1840                 else
1841                         f = fopen(file, "r");
1842
1843                 if (!f) {
1844                         int __err = errno;
1845
1846                         log_err("fio: unable to open '%s' job file\n", file);
1847                         if (td)
1848                                 td_verror(td, __err, "job file open");
1849                         return 1;
1850                 }
1851         }
1852
1853         string = malloc(4096);
1854
1855         /*
1856          * it's really 256 + small bit, 280 should suffice
1857          */
1858         if (!nested) {
1859                 name = malloc(280);
1860                 memset(name, 0, 280);
1861         }
1862
1863         opts = NULL;
1864         if (nested && popts) {
1865                 opts = *popts;
1866                 alloc_opts = *aopts;
1867                 num_opts = *nopts;
1868         }
1869
1870         if (!opts) {
1871                 alloc_opts = 8;
1872                 opts = malloc(sizeof(char *) * alloc_opts);
1873                 num_opts = 0;
1874         }
1875
1876         stonewall = stonewall_flag;
1877         do {
1878                 /*
1879                  * if skip_fgets is set, we already have loaded a line we
1880                  * haven't handled.
1881                  */
1882                 if (!skip_fgets) {
1883                         if (is_buf)
1884                                 p = strsep(&file, "\n");
1885                         else
1886                                 p = fgets(string, 4096, f);
1887                         if (!p)
1888                                 break;
1889                 }
1890
1891                 skip_fgets = 0;
1892                 strip_blank_front(&p);
1893                 strip_blank_end(p);
1894
1895                 dprint(FD_PARSE, "%s\n", p);
1896                 if (is_empty_or_comment(p))
1897                         continue;
1898
1899                 if (!nested) {
1900                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1901                                 if (inside_skip)
1902                                         continue;
1903
1904                                 log_err("fio: option <%s> outside of "
1905                                         "[] job section\n", p);
1906                                 ret = 1;
1907                                 break;
1908                         }
1909
1910                         name[strlen(name) - 1] = '\0';
1911
1912                         if (skip_this_section(name)) {
1913                                 inside_skip = 1;
1914                                 continue;
1915                         } else
1916                                 inside_skip = 0;
1917
1918                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1919
1920                         global = !strncmp(name, "global", 6);
1921
1922                         if (dump_cmdline) {
1923                                 if (first_sect)
1924                                         log_info("fio ");
1925                                 if (!global)
1926                                         log_info("--name=%s ", name);
1927                                 first_sect = 0;
1928                         }
1929
1930                         td = get_new_job(global, &def_thread, false, name);
1931                         if (!td) {
1932                                 ret = 1;
1933                                 break;
1934                         }
1935
1936                         /*
1937                          * Separate multiple job files by a stonewall
1938                          */
1939                         if (!global && stonewall) {
1940                                 td->o.stonewall = stonewall;
1941                                 stonewall = 0;
1942                         }
1943
1944                         num_opts = 0;
1945                         memset(opts, 0, alloc_opts * sizeof(char *));
1946                 }
1947                 else
1948                         skip_fgets = 1;
1949
1950                 while (1) {
1951                         if (!skip_fgets) {
1952                                 if (is_buf)
1953                                         p = strsep(&file, "\n");
1954                                 else
1955                                         p = fgets(string, 4096, f);
1956                                 if (!p)
1957                                         break;
1958                                 dprint(FD_PARSE, "%s", p);
1959                         }
1960                         else
1961                                 skip_fgets = 0;
1962
1963                         if (is_empty_or_comment(p))
1964                                 continue;
1965
1966                         strip_blank_front(&p);
1967
1968                         /*
1969                          * new section, break out and make sure we don't
1970                          * fgets() a new line at the top.
1971                          */
1972                         if (p[0] == '[') {
1973                                 if (nested) {
1974                                         log_err("No new sections in included files\n");
1975                                         return 1;
1976                                 }
1977
1978                                 skip_fgets = 1;
1979                                 break;
1980                         }
1981
1982                         strip_blank_end(p);
1983
1984                         if (!strncmp(p, "include", strlen("include"))) {
1985                                 char *filename = p + strlen("include") + 1,
1986                                         *ts, *full_fn = NULL;
1987
1988                                 /*
1989                                  * Allow for the include filename
1990                                  * specification to be relative.
1991                                  */
1992                                 if (access(filename, F_OK) &&
1993                                     (ts = strrchr(file, '/'))) {
1994                                         int len = ts - file +
1995                                                 strlen(filename) + 2;
1996
1997                                         if (!(full_fn = calloc(1, len))) {
1998                                                 ret = ENOMEM;
1999                                                 break;
2000                                         }
2001
2002                                         strncpy(full_fn,
2003                                                 file, (ts - file) + 1);
2004                                         strncpy(full_fn + (ts - file) + 1,
2005                                                 filename, strlen(filename));
2006                                         full_fn[len - 1] = 0;
2007                                         filename = full_fn;
2008                                 }
2009
2010                                 ret = __parse_jobs_ini(td, filename, is_buf,
2011                                                        stonewall_flag, type, 1,
2012                                                        name, &opts,
2013                                                        &alloc_opts, &num_opts);
2014
2015                                 if (ret) {
2016                                         log_err("Error %d while parsing "
2017                                                 "include file %s\n",
2018                                                 ret, filename);
2019                                 }
2020
2021                                 if (full_fn)
2022                                         free(full_fn);
2023
2024                                 if (ret)
2025                                         break;
2026
2027                                 continue;
2028                         }
2029
2030                         if (num_opts == alloc_opts) {
2031                                 alloc_opts <<= 1;
2032                                 opts = realloc(opts,
2033                                                 alloc_opts * sizeof(char *));
2034                         }
2035
2036                         opts[num_opts] = strdup(p);
2037                         num_opts++;
2038                 }
2039
2040                 if (nested) {
2041                         *popts = opts;
2042                         *aopts = alloc_opts;
2043                         *nopts = num_opts;
2044                         goto out;
2045                 }
2046
2047                 ret = fio_options_parse(td, opts, num_opts);
2048                 if (!ret) {
2049                         if (dump_cmdline)
2050                                 dump_opt_list(td);
2051
2052                         ret = add_job(td, name, 0, 0, type);
2053                 } else {
2054                         log_err("fio: job %s dropped\n", name);
2055                         put_job(td);
2056                 }
2057
2058                 for (i = 0; i < num_opts; i++)
2059                         free(opts[i]);
2060                 num_opts = 0;
2061         } while (!ret);
2062
2063         if (dump_cmdline)
2064                 log_info("\n");
2065
2066         i = 0;
2067         while (i < nr_job_sections) {
2068                 free(job_sections[i]);
2069                 i++;
2070         }
2071
2072         free(opts);
2073 out:
2074         free(string);
2075         if (!nested)
2076                 free(name);
2077         if (!is_buf && f != stdin)
2078                 fclose(f);
2079         return ret;
2080 }
2081
2082 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2083 {
2084         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2085                         0, NULL, NULL, NULL, NULL);
2086 }
2087
2088 static int fill_def_thread(void)
2089 {
2090         memset(&def_thread, 0, sizeof(def_thread));
2091         INIT_FLIST_HEAD(&def_thread.opt_list);
2092
2093         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2094         def_thread.o.error_dump = 1;
2095
2096         /*
2097          * fill default options
2098          */
2099         fio_fill_default_options(&def_thread);
2100         return 0;
2101 }
2102
2103 static void show_debug_categories(void)
2104 {
2105 #ifdef FIO_INC_DEBUG
2106         const struct debug_level *dl = &debug_levels[0];
2107         int curlen, first = 1;
2108
2109         curlen = 0;
2110         while (dl->name) {
2111                 int has_next = (dl + 1)->name != NULL;
2112
2113                 if (first || curlen + strlen(dl->name) >= 80) {
2114                         if (!first) {
2115                                 printf("\n");
2116                                 curlen = 0;
2117                         }
2118                         curlen += printf("\t\t\t%s", dl->name);
2119                         curlen += 3 * (8 - 1);
2120                         if (has_next)
2121                                 curlen += printf(",");
2122                 } else {
2123                         curlen += printf("%s", dl->name);
2124                         if (has_next)
2125                                 curlen += printf(",");
2126                 }
2127                 dl++;
2128                 first = 0;
2129         }
2130         printf("\n");
2131 #endif
2132 }
2133
2134 /*
2135  * Following options aren't printed by usage().
2136  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2137  * --latency-log - Deprecated option.
2138  */
2139 static void usage(const char *name)
2140 {
2141         printf("%s\n", fio_version_string);
2142         printf("%s [options] [job options] <job file(s)>\n", name);
2143         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2144         show_debug_categories();
2145         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2146         printf("  --output\t\tWrite output to file\n");
2147         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2148         printf("  --minimal\t\tMinimal (terse) output\n");
2149         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2150         printf("  --terse-version=type\tSet terse version output format"
2151                 " (default 3, or 2 or 4)\n");
2152         printf("  --version\t\tPrint version info and exit\n");
2153         printf("  --help\t\tPrint this page\n");
2154         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2155         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2156         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2157                 " them\n");
2158         printf("  --enghelp=engine\tPrint ioengine help, or list"
2159                 " available ioengines\n");
2160         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2161                 " cmd\n");
2162         printf("  --showcmd\t\tTurn a job file into command line options\n");
2163         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2164         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2165         printf("  --eta-newline=time\tForce a new line for every 'time'");
2166         printf(" period passed\n");
2167         printf("  --status-interval=t\tForce full status dump every");
2168         printf(" 't' period passed\n");
2169         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2170                 " writes\n");
2171         printf("  --section=name\tOnly run specified section in job file,"
2172                 " multiple sections can be specified\n");
2173         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2174                 " (def 16384)\n");
2175         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2176         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2177         printf("  --server=args\t\tStart a backend fio server\n");
2178         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2179         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2180         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2181         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2182                 "\t\t\t(option=system,percpu) or run unit work\n"
2183                 "\t\t\tcalibration only (option=calibrate)\n");
2184 #ifdef CONFIG_ZLIB
2185         printf("  --inflate-log=log\tInflate and output compressed log\n");
2186 #endif
2187         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2188         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2189         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2190         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2191         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2192         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2193 }
2194
2195 #ifdef FIO_INC_DEBUG
2196 const struct debug_level debug_levels[] = {
2197         { .name = "process",
2198           .help = "Process creation/exit logging",
2199           .shift = FD_PROCESS,
2200         },
2201         { .name = "file",
2202           .help = "File related action logging",
2203           .shift = FD_FILE,
2204         },
2205         { .name = "io",
2206           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2207           .shift = FD_IO,
2208         },
2209         { .name = "mem",
2210           .help = "Memory allocation/freeing logging",
2211           .shift = FD_MEM,
2212         },
2213         { .name = "blktrace",
2214           .help = "blktrace action logging",
2215           .shift = FD_BLKTRACE,
2216         },
2217         { .name = "verify",
2218           .help = "IO verification action logging",
2219           .shift = FD_VERIFY,
2220         },
2221         { .name = "random",
2222           .help = "Random generation logging",
2223           .shift = FD_RANDOM,
2224         },
2225         { .name = "parse",
2226           .help = "Parser logging",
2227           .shift = FD_PARSE,
2228         },
2229         { .name = "diskutil",
2230           .help = "Disk utility logging actions",
2231           .shift = FD_DISKUTIL,
2232         },
2233         { .name = "job",
2234           .help = "Logging related to creating/destroying jobs",
2235           .shift = FD_JOB,
2236         },
2237         { .name = "mutex",
2238           .help = "Mutex logging",
2239           .shift = FD_MUTEX
2240         },
2241         { .name = "profile",
2242           .help = "Logging related to profiles",
2243           .shift = FD_PROFILE,
2244         },
2245         { .name = "time",
2246           .help = "Logging related to time keeping functions",
2247           .shift = FD_TIME,
2248         },
2249         { .name = "net",
2250           .help = "Network logging",
2251           .shift = FD_NET,
2252         },
2253         { .name = "rate",
2254           .help = "Rate logging",
2255           .shift = FD_RATE,
2256         },
2257         { .name = "compress",
2258           .help = "Log compression logging",
2259           .shift = FD_COMPRESS,
2260         },
2261         { .name = "steadystate",
2262           .help = "Steady state detection logging",
2263           .shift = FD_STEADYSTATE,
2264         },
2265         { .name = "helperthread",
2266           .help = "Helper thread logging",
2267           .shift = FD_HELPERTHREAD,
2268         },
2269         { .name = NULL, },
2270 };
2271
2272 static int set_debug(const char *string)
2273 {
2274         const struct debug_level *dl;
2275         char *p = (char *) string;
2276         char *opt;
2277         int i;
2278
2279         if (!string)
2280                 return 0;
2281
2282         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2283                 log_info("fio: dumping debug options:");
2284                 for (i = 0; debug_levels[i].name; i++) {
2285                         dl = &debug_levels[i];
2286                         log_info("%s,", dl->name);
2287                 }
2288                 log_info("all\n");
2289                 return 1;
2290         }
2291
2292         while ((opt = strsep(&p, ",")) != NULL) {
2293                 int found = 0;
2294
2295                 if (!strncmp(opt, "all", 3)) {
2296                         log_info("fio: set all debug options\n");
2297                         fio_debug = ~0UL;
2298                         continue;
2299                 }
2300
2301                 for (i = 0; debug_levels[i].name; i++) {
2302                         dl = &debug_levels[i];
2303                         found = !strncmp(opt, dl->name, strlen(dl->name));
2304                         if (!found)
2305                                 continue;
2306
2307                         if (dl->shift == FD_JOB) {
2308                                 opt = strchr(opt, ':');
2309                                 if (!opt) {
2310                                         log_err("fio: missing job number\n");
2311                                         break;
2312                                 }
2313                                 opt++;
2314                                 fio_debug_jobno = atoi(opt);
2315                                 log_info("fio: set debug jobno %d\n",
2316                                                         fio_debug_jobno);
2317                         } else {
2318                                 log_info("fio: set debug option %s\n", opt);
2319                                 fio_debug |= (1UL << dl->shift);
2320                         }
2321                         break;
2322                 }
2323
2324                 if (!found)
2325                         log_err("fio: debug mask %s not found\n", opt);
2326         }
2327         return 0;
2328 }
2329 #else
2330 static int set_debug(const char *string)
2331 {
2332         log_err("fio: debug tracing not included in build\n");
2333         return 1;
2334 }
2335 #endif
2336
2337 static void fio_options_fill_optstring(void)
2338 {
2339         char *ostr = cmd_optstr;
2340         int i, c;
2341
2342         c = i = 0;
2343         while (l_opts[i].name) {
2344                 ostr[c++] = l_opts[i].val;
2345                 if (l_opts[i].has_arg == required_argument)
2346                         ostr[c++] = ':';
2347                 else if (l_opts[i].has_arg == optional_argument) {
2348                         ostr[c++] = ':';
2349                         ostr[c++] = ':';
2350                 }
2351                 i++;
2352         }
2353         ostr[c] = '\0';
2354 }
2355
2356 static int client_flag_set(char c)
2357 {
2358         int i;
2359
2360         i = 0;
2361         while (l_opts[i].name) {
2362                 int val = l_opts[i].val;
2363
2364                 if (c == (val & 0xff))
2365                         return (val & FIO_CLIENT_FLAG);
2366
2367                 i++;
2368         }
2369
2370         return 0;
2371 }
2372
2373 static void parse_cmd_client(void *client, char *opt)
2374 {
2375         fio_client_add_cmd_option(client, opt);
2376 }
2377
2378 static void show_closest_option(const char *name)
2379 {
2380         int best_option, best_distance;
2381         int i, distance;
2382
2383         while (*name == '-')
2384                 name++;
2385
2386         best_option = -1;
2387         best_distance = INT_MAX;
2388         i = 0;
2389         while (l_opts[i].name) {
2390                 distance = string_distance(name, l_opts[i].name);
2391                 if (distance < best_distance) {
2392                         best_distance = distance;
2393                         best_option = i;
2394                 }
2395                 i++;
2396         }
2397
2398         if (best_option != -1 && string_distance_ok(name, best_distance))
2399                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2400 }
2401
2402 static int parse_output_format(const char *optarg)
2403 {
2404         char *p, *orig, *opt;
2405         int ret = 0;
2406
2407         p = orig = strdup(optarg);
2408
2409         output_format = 0;
2410
2411         while ((opt = strsep(&p, ",")) != NULL) {
2412                 if (!strcmp(opt, "minimal") ||
2413                     !strcmp(opt, "terse") ||
2414                     !strcmp(opt, "csv"))
2415                         output_format |= FIO_OUTPUT_TERSE;
2416                 else if (!strcmp(opt, "json"))
2417                         output_format |= FIO_OUTPUT_JSON;
2418                 else if (!strcmp(opt, "json+"))
2419                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2420                 else if (!strcmp(opt, "normal"))
2421                         output_format |= FIO_OUTPUT_NORMAL;
2422                 else {
2423                         log_err("fio: invalid output format %s\n", opt);
2424                         ret = 1;
2425                         break;
2426                 }
2427         }
2428
2429         free(orig);
2430         return ret;
2431 }
2432
2433 int parse_cmd_line(int argc, char *argv[], int client_type)
2434 {
2435         struct thread_data *td = NULL;
2436         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2437         char *ostr = cmd_optstr;
2438         char *pid_file = NULL;
2439         void *cur_client = NULL;
2440         int backend = 0;
2441
2442         /*
2443          * Reset optind handling, since we may call this multiple times
2444          * for the backend.
2445          */
2446         optind = 1;
2447
2448         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2449                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2450                         parse_cmd_client(cur_client, argv[optind - 1]);
2451                         c &= ~FIO_CLIENT_FLAG;
2452                 }
2453
2454                 switch (c) {
2455                 case 'a':
2456                         smalloc_pool_size = atoi(optarg);
2457                         smalloc_pool_size <<= 10;
2458                         sinit();
2459                         break;
2460                 case 'l':
2461                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2462                         do_exit++;
2463                         exit_val = 1;
2464                         break;
2465                 case 'b':
2466                         write_bw_log = 1;
2467                         break;
2468                 case 'o': {
2469                         FILE *tmp;
2470
2471                         if (f_out && f_out != stdout)
2472                                 fclose(f_out);
2473
2474                         tmp = fopen(optarg, "w+");
2475                         if (!tmp) {
2476                                 log_err("fio: output file open error: %s\n", strerror(errno));
2477                                 exit_val = 1;
2478                                 do_exit++;
2479                                 break;
2480                         }
2481                         f_err = f_out = tmp;
2482                         break;
2483                         }
2484                 case 'm':
2485                         output_format = FIO_OUTPUT_TERSE;
2486                         break;
2487                 case 'F':
2488                         if (parse_output_format(optarg)) {
2489                                 log_err("fio: failed parsing output-format\n");
2490                                 exit_val = 1;
2491                                 do_exit++;
2492                                 break;
2493                         }
2494                         break;
2495                 case 'f':
2496                         output_format |= FIO_OUTPUT_TERSE;
2497                         break;
2498                 case 'h':
2499                         did_arg = true;
2500                         if (!cur_client) {
2501                                 usage(argv[0]);
2502                                 do_exit++;
2503                         }
2504                         break;
2505                 case 'c':
2506                         did_arg = true;
2507                         if (!cur_client) {
2508                                 fio_show_option_help(optarg);
2509                                 do_exit++;
2510                         }
2511                         break;
2512                 case 'i':
2513                         did_arg = true;
2514                         if (!cur_client) {
2515                                 fio_show_ioengine_help(optarg);
2516                                 do_exit++;
2517                         }
2518                         break;
2519                 case 's':
2520                         did_arg = true;
2521                         dump_cmdline = 1;
2522                         break;
2523                 case 'r':
2524                         read_only = 1;
2525                         break;
2526                 case 'v':
2527                         did_arg = true;
2528                         if (!cur_client) {
2529                                 log_info("%s\n", fio_version_string);
2530                                 do_exit++;
2531                         }
2532                         break;
2533                 case 'V':
2534                         terse_version = atoi(optarg);
2535                         if (!(terse_version >= 2 && terse_version <= 5)) {
2536                                 log_err("fio: bad terse version format\n");
2537                                 exit_val = 1;
2538                                 do_exit++;
2539                         }
2540                         break;
2541                 case 'e':
2542                         if (!strcmp("always", optarg))
2543                                 eta_print = FIO_ETA_ALWAYS;
2544                         else if (!strcmp("never", optarg))
2545                                 eta_print = FIO_ETA_NEVER;
2546                         break;
2547                 case 'E': {
2548                         long long t = 0;
2549
2550                         if (check_str_time(optarg, &t, 1)) {
2551                                 log_err("fio: failed parsing eta time %s\n", optarg);
2552                                 exit_val = 1;
2553                                 do_exit++;
2554                                 break;
2555                         }
2556                         eta_new_line = t / 1000;
2557                         if (!eta_new_line) {
2558                                 log_err("fio: eta new line time too short\n");
2559                                 exit_val = 1;
2560                                 do_exit++;
2561                         }
2562                         break;
2563                         }
2564                 case 'O': {
2565                         long long t = 0;
2566
2567                         if (check_str_time(optarg, &t, 1)) {
2568                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2569                                 exit_val = 1;
2570                                 do_exit++;
2571                                 break;
2572                         }
2573                         eta_interval_msec = t / 1000;
2574                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2575                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2576                                 exit_val = 1;
2577                                 do_exit++;
2578                         }
2579                         break;
2580                         }
2581                 case 'd':
2582                         if (set_debug(optarg))
2583                                 do_exit++;
2584                         break;
2585                 case 'P':
2586                         did_arg = true;
2587                         parse_only = 1;
2588                         break;
2589                 case 'x': {
2590                         size_t new_size;
2591
2592                         if (!strcmp(optarg, "global")) {
2593                                 log_err("fio: can't use global as only "
2594                                         "section\n");
2595                                 do_exit++;
2596                                 exit_val = 1;
2597                                 break;
2598                         }
2599                         new_size = (nr_job_sections + 1) * sizeof(char *);
2600                         job_sections = realloc(job_sections, new_size);
2601                         job_sections[nr_job_sections] = strdup(optarg);
2602                         nr_job_sections++;
2603                         break;
2604                         }
2605 #ifdef CONFIG_ZLIB
2606                 case 'X':
2607                         exit_val = iolog_file_inflate(optarg);
2608                         did_arg = true;
2609                         do_exit++;
2610                         break;
2611 #endif
2612                 case 'p':
2613                         did_arg = true;
2614                         if (exec_profile)
2615                                 free(exec_profile);
2616                         exec_profile = strdup(optarg);
2617                         break;
2618                 case FIO_GETOPT_JOB: {
2619                         const char *opt = l_opts[lidx].name;
2620                         char *val = optarg;
2621
2622                         if (!strncmp(opt, "name", 4) && td) {
2623                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2624                                 if (ret)
2625                                         goto out_free;
2626                                 td = NULL;
2627                                 did_arg = true;
2628                         }
2629                         if (!td) {
2630                                 int is_section = !strncmp(opt, "name", 4);
2631                                 int global = 0;
2632
2633                                 if (!is_section || !strncmp(val, "global", 6))
2634                                         global = 1;
2635
2636                                 if (is_section && skip_this_section(val))
2637                                         continue;
2638
2639                                 td = get_new_job(global, &def_thread, true, NULL);
2640                                 if (!td || ioengine_load(td)) {
2641                                         if (td) {
2642                                                 put_job(td);
2643                                                 td = NULL;
2644                                         }
2645                                         do_exit++;
2646                                         exit_val = 1;
2647                                         break;
2648                                 }
2649                                 fio_options_set_ioengine_opts(l_opts, td);
2650                         }
2651
2652                         if ((!val || !strlen(val)) &&
2653                             l_opts[lidx].has_arg == required_argument) {
2654                                 log_err("fio: option %s requires an argument\n", opt);
2655                                 ret = 1;
2656                         } else
2657                                 ret = fio_cmd_option_parse(td, opt, val);
2658
2659                         if (ret) {
2660                                 if (td) {
2661                                         put_job(td);
2662                                         td = NULL;
2663                                 }
2664                                 do_exit++;
2665                                 exit_val = 1;
2666                         }
2667
2668                         if (!ret && !strcmp(opt, "ioengine")) {
2669                                 if (ioengine_load(td)) {
2670                                         put_job(td);
2671                                         td = NULL;
2672                                         do_exit++;
2673                                         exit_val = 1;
2674                                         break;
2675                                 }
2676                                 fio_options_set_ioengine_opts(l_opts, td);
2677                         }
2678                         break;
2679                 }
2680                 case FIO_GETOPT_IOENGINE: {
2681                         const char *opt = l_opts[lidx].name;
2682                         char *val = optarg;
2683
2684                         if (!td)
2685                                 break;
2686
2687                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2688                         break;
2689                 }
2690                 case 'w':
2691                         warnings_fatal = 1;
2692                         break;
2693                 case 'j':
2694                         max_jobs = atoi(optarg);
2695                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2696                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2697                                 do_exit++;
2698                                 exit_val = 1;
2699                         }
2700                         break;
2701                 case 'S':
2702                         did_arg = true;
2703 #ifndef CONFIG_NO_SHM
2704                         if (nr_clients) {
2705                                 log_err("fio: can't be both client and server\n");
2706                                 do_exit++;
2707                                 exit_val = 1;
2708                                 break;
2709                         }
2710                         if (optarg)
2711                                 fio_server_set_arg(optarg);
2712                         is_backend = 1;
2713                         backend = 1;
2714 #else
2715                         log_err("fio: client/server requires SHM support\n");
2716                         do_exit++;
2717                         exit_val = 1;
2718 #endif
2719                         break;
2720                 case 'D':
2721                         if (pid_file)
2722                                 free(pid_file);
2723                         pid_file = strdup(optarg);
2724                         break;
2725                 case 'I':
2726                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2727                                 /* exit on error and calibration only */
2728                                 did_arg = true;
2729                                 do_exit++;
2730                                 if (ret == -1)
2731                                         exit_val = 1;
2732                         }
2733                         break;
2734                 case 'C':
2735                         did_arg = true;
2736                         if (is_backend) {
2737                                 log_err("fio: can't be both client and server\n");
2738                                 do_exit++;
2739                                 exit_val = 1;
2740                                 break;
2741                         }
2742                         /* if --client parameter contains a pathname */
2743                         if (0 == access(optarg, R_OK)) {
2744                                 /* file contains a list of host addrs or names */
2745                                 char hostaddr[PATH_MAX] = {0};
2746                                 char formatstr[8];
2747                                 FILE * hostf = fopen(optarg, "r");
2748                                 if (!hostf) {
2749                                         log_err("fio: could not open client list file %s for read\n", optarg);
2750                                         do_exit++;
2751                                         exit_val = 1;
2752                                         break;
2753                                 }
2754                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2755                                 /*
2756                                  * read at most PATH_MAX-1 chars from each
2757                                  * record in this file
2758                                  */
2759                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2760                                         /* expect EVERY host in file to be valid */
2761                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2762                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2763                                                 do_exit++;
2764                                                 exit_val = 1;
2765                                                 break;
2766                                         }
2767                                 }
2768                                 fclose(hostf);
2769                                 break; /* no possibility of job file for "this client only" */
2770                         }
2771                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2772                                 log_err("fio: failed adding client %s\n", optarg);
2773                                 do_exit++;
2774                                 exit_val = 1;
2775                                 break;
2776                         }
2777                         /*
2778                          * If the next argument exists and isn't an option,
2779                          * assume it's a job file for this client only.
2780                          */
2781                         while (optind < argc) {
2782                                 if (!strncmp(argv[optind], "--", 2) ||
2783                                     !strncmp(argv[optind], "-", 1))
2784                                         break;
2785
2786                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2787                                         break;
2788                                 optind++;
2789                         }
2790                         break;
2791                 case 'R':
2792                         did_arg = true;
2793                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2794                                 do_exit++;
2795                                 exit_val = 1;
2796                         }
2797                         break;
2798                 case 'T':
2799                         did_arg = true;
2800                         do_exit++;
2801                         exit_val = fio_monotonic_clocktest(1);
2802                         break;
2803                 case 'G':
2804                         did_arg = true;
2805                         do_exit++;
2806                         exit_val = fio_crctest(optarg);
2807                         break;
2808                 case 'M':
2809                         did_arg = true;
2810                         do_exit++;
2811                         exit_val = fio_memcpy_test(optarg);
2812                         break;
2813                 case 'L': {
2814                         long long val;
2815
2816                         if (check_str_time(optarg, &val, 1)) {
2817                                 log_err("fio: failed parsing time %s\n", optarg);
2818                                 do_exit++;
2819                                 exit_val = 1;
2820                                 break;
2821                         }
2822                         if (val < 1000) {
2823                                 log_err("fio: status interval too small\n");
2824                                 do_exit++;
2825                                 exit_val = 1;
2826                         }
2827                         status_interval = val / 1000;
2828                         break;
2829                         }
2830                 case 'W':
2831                         if (trigger_file)
2832                                 free(trigger_file);
2833                         trigger_file = strdup(optarg);
2834                         break;
2835                 case 'H':
2836                         if (trigger_cmd)
2837                                 free(trigger_cmd);
2838                         trigger_cmd = strdup(optarg);
2839                         break;
2840                 case 'J':
2841                         if (trigger_remote_cmd)
2842                                 free(trigger_remote_cmd);
2843                         trigger_remote_cmd = strdup(optarg);
2844                         break;
2845                 case 'K':
2846                         if (aux_path)
2847                                 free(aux_path);
2848                         aux_path = strdup(optarg);
2849                         break;
2850                 case 'B':
2851                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2852                                 log_err("fio: failed parsing time %s\n", optarg);
2853                                 do_exit++;
2854                                 exit_val = 1;
2855                         }
2856                         trigger_timeout /= 1000000;
2857                         break;
2858                 case '?':
2859                         log_err("%s: unrecognized option '%s'\n", argv[0],
2860                                                         argv[optind - 1]);
2861                         show_closest_option(argv[optind - 1]);
2862                 default:
2863                         do_exit++;
2864                         exit_val = 1;
2865                         break;
2866                 }
2867                 if (do_exit)
2868                         break;
2869         }
2870
2871         if (do_exit && !(is_backend || nr_clients))
2872                 exit(exit_val);
2873
2874         if (nr_clients && fio_clients_connect())
2875                 exit(1);
2876
2877         if (is_backend && backend)
2878                 return fio_start_server(pid_file);
2879         else if (pid_file)
2880                 free(pid_file);
2881
2882         if (td) {
2883                 if (!ret) {
2884                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2885                         if (ret)
2886                                 exit(1);
2887                 }
2888         }
2889
2890         while (!ret && optind < argc) {
2891                 ini_idx++;
2892                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2893                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2894                 optind++;
2895         }
2896
2897 out_free:
2898         return ini_idx;
2899 }
2900
2901 int fio_init_options(void)
2902 {
2903         f_out = stdout;
2904         f_err = stderr;
2905
2906         fio_options_fill_optstring();
2907         fio_options_dup_and_init(l_opts);
2908
2909         atexit(free_shm);
2910
2911         if (fill_def_thread())
2912                 return 1;
2913
2914         return 0;
2915 }
2916
2917 extern int fio_check_options(struct thread_options *);
2918
2919 int parse_options(int argc, char *argv[])
2920 {
2921         const int type = FIO_CLIENT_TYPE_CLI;
2922         int job_files, i;
2923
2924         if (fio_init_options())
2925                 return 1;
2926         if (fio_test_cconv(&def_thread.o))
2927                 log_err("fio: failed internal cconv test\n");
2928
2929         job_files = parse_cmd_line(argc, argv, type);
2930
2931         if (job_files > 0) {
2932                 for (i = 0; i < job_files; i++) {
2933                         if (i && fill_def_thread())
2934                                 return 1;
2935                         if (nr_clients) {
2936                                 if (fio_clients_send_ini(ini_file[i]))
2937                                         return 1;
2938                                 free(ini_file[i]);
2939                         } else if (!is_backend) {
2940                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2941                                         return 1;
2942                                 free(ini_file[i]);
2943                         }
2944                 }
2945         } else if (nr_clients) {
2946                 if (fill_def_thread())
2947                         return 1;
2948                 if (fio_clients_send_ini(NULL))
2949                         return 1;
2950         }
2951
2952         free(ini_file);
2953         fio_options_free(&def_thread);
2954         filesetup_mem_free();
2955
2956         if (!thread_number) {
2957                 if (parse_dryrun())
2958                         return 0;
2959                 if (exec_profile)
2960                         return 0;
2961                 if (is_backend || nr_clients)
2962                         return 0;
2963                 if (did_arg)
2964                         return 0;
2965
2966                 log_err("No job(s) defined\n\n");
2967                 usage(argv[0]);
2968                 return 1;
2969         }
2970
2971         if (output_format & FIO_OUTPUT_NORMAL)
2972                 log_info("%s\n", fio_version_string);
2973
2974         return 0;
2975 }
2976
2977 void options_default_fill(struct thread_options *o)
2978 {
2979         memcpy(o, &def_thread.o, sizeof(*o));
2980 }
2981
2982 struct thread_data *get_global_options(void)
2983 {
2984         return &def_thread;
2985 }