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/shm.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15
  16 #include "fio.h"
  17 #include "parse.h"
  18 #include "smalloc.h"
  19 #include "filehash.h"
  20 #include "verify.h"
  21 #include "profile.h"
  22 #include "server.h"
  23
  24 #include "lib/getopt.h"
  25
  26 const char fio_version_string[] = FIO_VERSION;
  27
  28 #define FIO_RANDSEED            (0xb1899bedUL)
  29
  30 static char **ini_file;
  31 static int max_jobs = FIO_MAX_JOBS;
  32 static int dump_cmdline;
  33 static int def_timeout;
  34
  35 static struct thread_data def_thread;
  36 struct thread_data *threads = NULL;
  37
  38 int exitall_on_terminate = 0;
  39 int output_format = FIO_OUTPUT_NORMAL;
  40 int eta_print;
  41 unsigned long long mlock_size = 0;
  42 FILE *f_out = NULL;
  43 FILE *f_err = NULL;
  44 char **job_sections = NULL;
  45 int nr_job_sections = 0;
  46 char *exec_profile = NULL;
  47 int warnings_fatal = 0;
  48 int terse_version = 3;
  49 int is_backend = 0;
  50 int nr_clients = 0;
  51 int log_syslog = 0;
  52
  53 int write_bw_log = 0;
  54 int read_only = 0;
  55
  56 static int write_lat_log;
  57
  58 static int prev_group_jobs;
  59
  60 unsigned long fio_debug = 0;
  61 unsigned int fio_debug_jobno = -1;
  62 unsigned int *fio_debug_jobp = NULL;
  63
  64 static char cmd_optstr[256];
  65 static int did_arg;
  66
  67 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  68         { .u.f  =  1.00 },
  69         { .u.f  =  5.00 },
  70         { .u.f  = 10.00 },
  71         { .u.f  = 20.00 },
  72         { .u.f  = 30.00 },
  73         { .u.f  = 40.00 },
  74         { .u.f  = 50.00 },
  75         { .u.f  = 60.00 },
  76         { .u.f  = 70.00 },
  77         { .u.f  = 80.00 },
  78         { .u.f  = 90.00 },
  79         { .u.f  = 95.00 },
  80         { .u.f  = 99.00 },
  81         { .u.f  = 99.50 },
  82         { .u.f  = 99.90 },
  83         { .u.f  = 99.95 },
  84         { .u.f  = 99.99 },
  85 };
  86
  87 #define FIO_CLIENT_FLAG         (1 << 16)
  88
  89 /*
  90  * Command line options. These will contain the above, plus a few
  91  * extra that only pertain to fio itself and not jobs.
  92  */
  93 static struct option l_opts[FIO_NR_OPTIONS] = {
  94         {
  95                 .name           = (char *) "output",
  96                 .has_arg        = required_argument,
  97                 .val            = 'o' | FIO_CLIENT_FLAG,
  98         },
  99         {
 100                 .name           = (char *) "timeout",
 101                 .has_arg        = required_argument,
 102                 .val            = 't' | 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        = required_argument,
 112                 .val            = 'b' | FIO_CLIENT_FLAG,
 113         },
 114         {
 115                 .name           = (char *) "minimal",
 116                 .has_arg        = optional_argument,
 117                 .val            = 'm' | FIO_CLIENT_FLAG,
 118         },
 119         {
 120                 .name           = (char *) "output-format",
 121                 .has_arg        = optional_argument,
 122                 .val            = 'F' | FIO_CLIENT_FLAG,
 123         },
 124         {
 125                 .name           = (char *) "version",
 126                 .has_arg        = no_argument,
 127                 .val            = 'v' | FIO_CLIENT_FLAG,
 128         },
 129         {
 130                 .name           = (char *) "help",
 131                 .has_arg        = no_argument,
 132                 .val            = 'h' | FIO_CLIENT_FLAG,
 133         },
 134         {
 135                 .name           = (char *) "cmdhelp",
 136                 .has_arg        = optional_argument,
 137                 .val            = 'c' | FIO_CLIENT_FLAG,
 138         },
 139         {
 140                 .name              = (char *) "enghelp",
 141                 .has_arg        = optional_argument,
 142                 .val                = 'i' | FIO_CLIENT_FLAG,
 143         },
 144         {
 145                 .name           = (char *) "showcmd",
 146                 .has_arg        = no_argument,
 147                 .val            = 's' | FIO_CLIENT_FLAG,
 148         },
 149         {
 150                 .name           = (char *) "readonly",
 151                 .has_arg        = no_argument,
 152                 .val            = 'r' | FIO_CLIENT_FLAG,
 153         },
 154         {
 155                 .name           = (char *) "eta",
 156                 .has_arg        = required_argument,
 157                 .val            = 'e' | FIO_CLIENT_FLAG,
 158         },
 159         {
 160                 .name           = (char *) "debug",
 161                 .has_arg        = required_argument,
 162                 .val            = 'd' | FIO_CLIENT_FLAG,
 163         },
 164         {
 165                 .name           = (char *) "section",
 166                 .has_arg        = required_argument,
 167                 .val            = 'x' | FIO_CLIENT_FLAG,
 168         },
 169         {
 170                 .name           = (char *) "alloc-size",
 171                 .has_arg        = required_argument,
 172                 .val            = 'a' | FIO_CLIENT_FLAG,
 173         },
 174         {
 175                 .name           = (char *) "profile",
 176                 .has_arg        = required_argument,
 177                 .val            = 'p' | FIO_CLIENT_FLAG,
 178         },
 179         {
 180                 .name           = (char *) "warnings-fatal",
 181                 .has_arg        = no_argument,
 182                 .val            = 'w' | FIO_CLIENT_FLAG,
 183         },
 184         {
 185                 .name           = (char *) "max-jobs",
 186                 .has_arg        = required_argument,
 187                 .val            = 'j' | FIO_CLIENT_FLAG,
 188         },
 189         {
 190                 .name           = (char *) "terse-version",
 191                 .has_arg        = required_argument,
 192                 .val            = 'V' | FIO_CLIENT_FLAG,
 193         },
 194         {
 195                 .name           = (char *) "server",
 196                 .has_arg        = optional_argument,
 197                 .val            = 'S',
 198         },
 199         {       .name           = (char *) "daemonize",
 200                 .has_arg        = required_argument,
 201                 .val            = 'D',
 202         },
 203         {
 204                 .name           = (char *) "client",
 205                 .has_arg        = required_argument,
 206                 .val            = 'C',
 207         },
 208         {
 209                 .name           = NULL,
 210         },
 211 };
 212
 213 static void free_shm(void)
 214 {
 215         struct shmid_ds sbuf;
 216
 217         if (threads) {
 218                 void *tp = threads;
 219
 220                 threads = NULL;
 221                 file_hash_exit();
 222                 flow_exit();
 223                 fio_debug_jobp = NULL;
 224                 shmdt(tp);
 225                 shmctl(shm_id, IPC_RMID, &sbuf);
 226         }
 227
 228         scleanup();
 229 }
 230
 231 /*
 232  * The thread area is shared between the main process and the job
 233  * threads/processes. So setup a shared memory segment that will hold
 234  * all the job info. We use the end of the region for keeping track of
 235  * open files across jobs, for file sharing.
 236  */
 237 static int setup_thread_area(void)
 238 {
 239         void *hash;
 240
 241         if (threads)
 242                 return 0;
 243
 244         /*
 245          * 1024 is too much on some machines, scale max_jobs if
 246          * we get a failure that looks like too large a shm segment
 247          */
 248         do {
 249                 size_t size = max_jobs * sizeof(struct thread_data);
 250
 251                 size += file_hash_size;
 252                 size += sizeof(unsigned int);
 253
 254                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 255                 if (shm_id != -1)
 256                         break;
 257                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 258                         perror("shmget");
 259                         break;
 260                 }
 261
 262                 max_jobs >>= 1;
 263         } while (max_jobs);
 264
 265         if (shm_id == -1)
 266                 return 1;
 267
 268         threads = shmat(shm_id, NULL, 0);
 269         if (threads == (void *) -1) {
 270                 perror("shmat");
 271                 return 1;
 272         }
 273
 274         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 275         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 276         fio_debug_jobp = (void *) hash + file_hash_size;
 277         *fio_debug_jobp = -1;
 278         file_hash_init(hash);
 279
 280         flow_init();
 281
 282         return 0;
 283 }
 284
 285 /*
 286  * Return a free job structure.
 287  */
 288 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 289                                        int preserve_eo)
 290 {
 291         struct thread_data *td;
 292
 293         if (global)
 294                 return &def_thread;
 295         if (setup_thread_area()) {
 296                 log_err("error: failed to setup shm segment\n");
 297                 return NULL;
 298         }
 299         if (thread_number >= max_jobs) {
 300                 log_err("error: maximum number of jobs (%d) reached.\n",
 301                                 max_jobs);
 302                 return NULL;
 303         }
 304
 305         td = &threads[thread_number++];
 306         *td = *parent;
 307
 308         td->io_ops = NULL;
 309         if (!preserve_eo)
 310                 td->eo = NULL;
 311
 312         td->o.uid = td->o.gid = -1U;
 313
 314         dup_files(td, parent);
 315         fio_options_mem_dupe(td);
 316
 317         profile_add_hooks(td);
 318
 319         td->thread_number = thread_number;
 320         return td;
 321 }
 322
 323 static void put_job(struct thread_data *td)
 324 {
 325         if (td == &def_thread)
 326                 return;
 327
 328         profile_td_exit(td);
 329         flow_exit_job(td);
 330
 331         if (td->error)
 332                 log_info("fio: %s\n", td->verror);
 333
 334         fio_options_free(td);
 335         if (td->io_ops)
 336                 free_ioengine(td);
 337
 338         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 339         thread_number--;
 340 }
 341
 342 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 343 {
 344         unsigned int bs = td->o.min_bs[ddir];
 345
 346         assert(ddir_rw(ddir));
 347
 348         if (td->o.rate[ddir])
 349                 td->rate_bps[ddir] = td->o.rate[ddir];
 350         else
 351                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 352
 353         if (!td->rate_bps[ddir]) {
 354                 log_err("rate lower than supported\n");
 355                 return -1;
 356         }
 357
 358         td->rate_pending_usleep[ddir] = 0;
 359         return 0;
 360 }
 361
 362 static int setup_rate(struct thread_data *td)
 363 {
 364         int ret = 0;
 365
 366         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 367                 ret = __setup_rate(td, DDIR_READ);
 368         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 369                 ret |= __setup_rate(td, DDIR_WRITE);
 370         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 371                 ret |= __setup_rate(td, DDIR_TRIM);
 372
 373         return ret;
 374 }
 375
 376 static int fixed_block_size(struct thread_options *o)
 377 {
 378         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 379                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 380                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 381                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 382                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 383 }
 384
 385 static void init_rand_distribution(struct thread_data *td)
 386 {
 387         unsigned int range_size;
 388         unsigned long nranges;
 389
 390         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
 391                 return;
 392
 393         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
 394
 395         nranges = (td->o.size + range_size - 1) / range_size;
 396         zipf_init(&td->zipf, nranges, td->o.zipf_theta);
 397 }
 398
 399 /*
 400  * Lazy way of fixing up options that depend on each other. We could also
 401  * define option callback handlers, but this is easier.
 402  */
 403 static int fixup_options(struct thread_data *td)
 404 {
 405         struct thread_options *o = &td->o;
 406         int ret = 0;
 407
 408 #ifndef FIO_HAVE_PSHARED_MUTEX
 409         if (!o->use_thread) {
 410                 log_info("fio: this platform does not support process shared"
 411                          " mutexes, forcing use of threads. Use the 'thread'"
 412                          " option to get rid of this warning.\n");
 413                 o->use_thread = 1;
 414                 ret = warnings_fatal;
 415         }
 416 #endif
 417
 418         if (o->write_iolog_file && o->read_iolog_file) {
 419                 log_err("fio: read iolog overrides write_iolog\n");
 420                 free(o->write_iolog_file);
 421                 o->write_iolog_file = NULL;
 422                 ret = warnings_fatal;
 423         }
 424
 425         /*
 426          * only really works with 1 file
 427          */
 428         if (o->zone_size && o->open_files == 1)
 429                 o->zone_size = 0;
 430
 431         /*
 432          * If zone_range isn't specified, backward compatibility dictates it
 433          * should be made equal to zone_size.
 434          */
 435         if (o->zone_size && !o->zone_range)
 436                 o->zone_range = o->zone_size;
 437
 438         /*
 439          * Reads can do overwrites, we always need to pre-create the file
 440          */
 441         if (td_read(td) || td_rw(td))
 442                 o->overwrite = 1;
 443
 444         if (!o->min_bs[DDIR_READ])
 445                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 446         if (!o->max_bs[DDIR_READ])
 447                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 448         if (!o->min_bs[DDIR_WRITE])
 449                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 450         if (!o->max_bs[DDIR_WRITE])
 451                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 452         if (!o->min_bs[DDIR_TRIM])
 453                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 454         if (!o->max_bs[DDIR_TRIM])
 455                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 456
 457
 458         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 459         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 460
 461         /*
 462          * For random IO, allow blockalign offset other than min_bs.
 463          */
 464         if (!o->ba[DDIR_READ] || !td_random(td))
 465                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 466         if (!o->ba[DDIR_WRITE] || !td_random(td))
 467                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 468         if (!o->ba[DDIR_TRIM] || !td_random(td))
 469                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 470
 471         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 472             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 473             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 474             !o->norandommap) {
 475                 log_err("fio: Any use of blockalign= turns off randommap\n");
 476                 o->norandommap = 1;
 477                 ret = warnings_fatal;
 478         }
 479
 480         if (!o->file_size_high)
 481                 o->file_size_high = o->file_size_low;
 482
 483         if (o->norandommap && o->verify != VERIFY_NONE
 484             && !fixed_block_size(o))  {
 485                 log_err("fio: norandommap given for variable block sizes, "
 486                         "verify disabled\n");
 487                 o->verify = VERIFY_NONE;
 488                 ret = warnings_fatal;
 489         }
 490         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 491                 log_err("fio: bs_unaligned may not work with raw io\n");
 492
 493         /*
 494          * thinktime_spin must be less than thinktime
 495          */
 496         if (o->thinktime_spin > o->thinktime)
 497                 o->thinktime_spin = o->thinktime;
 498
 499         /*
 500          * The low water mark cannot be bigger than the iodepth
 501          */
 502         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 503                 /*
 504                  * syslet work around - if the workload is sequential,
 505                  * we want to let the queue drain all the way down to
 506                  * avoid seeking between async threads
 507                  */
 508                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 509                         o->iodepth_low = 1;
 510                 else
 511                         o->iodepth_low = o->iodepth;
 512         }
 513
 514         /*
 515          * If batch number isn't set, default to the same as iodepth
 516          */
 517         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 518                 o->iodepth_batch = o->iodepth;
 519
 520         if (o->nr_files > td->files_index)
 521                 o->nr_files = td->files_index;
 522
 523         if (o->open_files > o->nr_files || !o->open_files)
 524                 o->open_files = o->nr_files;
 525
 526         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 527             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 528             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 529             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 530                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 531                 ret = 1;
 532         }
 533         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 534             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 535             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 536             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 537             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 538             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 539                 log_err("fio: minimum rate exceeds rate\n");
 540                 ret = 1;
 541         }
 542
 543         if (!o->timeout && o->time_based) {
 544                 log_err("fio: time_based requires a runtime/timeout setting\n");
 545                 o->time_based = 0;
 546                 ret = warnings_fatal;
 547         }
 548
 549         if (o->fill_device && !o->size)
 550                 o->size = -1ULL;
 551
 552         if (o->verify != VERIFY_NONE) {
 553                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 554                         log_info("Multiple writers may overwrite blocks that "
 555                                 "belong to other jobs. This can cause "
 556                                 "verification failures.\n");
 557                         ret = warnings_fatal;
 558                 }
 559
 560                 o->refill_buffers = 1;
 561                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 562                     !o->verify_interval)
 563                         o->verify_interval = o->min_bs[DDIR_WRITE];
 564         }
 565
 566         if (o->pre_read) {
 567                 o->invalidate_cache = 0;
 568                 if (td->io_ops->flags & FIO_PIPEIO) {
 569                         log_info("fio: cannot pre-read files with an IO engine"
 570                                  " that isn't seekable. Pre-read disabled.\n");
 571                         ret = warnings_fatal;
 572                 }
 573         }
 574
 575 #ifndef FIO_HAVE_FDATASYNC
 576         if (o->fdatasync_blocks) {
 577                 log_info("fio: this platform does not support fdatasync()"
 578                          " falling back to using fsync().  Use the 'fsync'"
 579                          " option instead of 'fdatasync' to get rid of"
 580                          " this warning\n");
 581                 o->fsync_blocks = o->fdatasync_blocks;
 582                 o->fdatasync_blocks = 0;
 583                 ret = warnings_fatal;
 584         }
 585 #endif
 586
 587 #ifdef WIN32
 588         /*
 589          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 590          * so fail if we're passed those flags
 591          */
 592         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 593                 log_err("fio: Windows does not support direct or non-buffered io with"
 594                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 595                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 596                 ret = 1;
 597         }
 598 #endif
 599
 600         /*
 601          * For fully compressible data, just zero them at init time.
 602          * It's faster than repeatedly filling it.
 603          */
 604         if (td->o.compress_percentage == 100) {
 605                 td->o.zero_buffers = 1;
 606                 td->o.compress_percentage = 0;
 607         }
 608
 609         init_rand_distribution(td);
 610
 611         return ret;
 612 }
 613
 614 /*
 615  * This function leaks the buffer
 616  */
 617 static char *to_kmg(unsigned int val)
 618 {
 619         char *buf = malloc(32);
 620         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 621         char *p = post;
 622
 623         do {
 624                 if (val & 1023)
 625                         break;
 626
 627                 val >>= 10;
 628                 p++;
 629         } while (*p);
 630
 631         snprintf(buf, 31, "%u%c", val, *p);
 632         return buf;
 633 }
 634
 635 /* External engines are specified by "external:name.o") */
 636 static const char *get_engine_name(const char *str)
 637 {
 638         char *p = strstr(str, ":");
 639
 640         if (!p)
 641                 return str;
 642
 643         p++;
 644         strip_blank_front(&p);
 645         strip_blank_end(p);
 646         return p;
 647 }
 648
 649 static int exists_and_not_file(const char *filename)
 650 {
 651         struct stat sb;
 652
 653         if (lstat(filename, &sb) == -1)
 654                 return 0;
 655
 656         /* \\.\ is the device namespace in Windows, where every file
 657          * is a device node */
 658         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 659                 return 0;
 660
 661         return 1;
 662 }
 663
 664 static void td_fill_rand_seeds_os(struct thread_data *td)
 665 {
 666         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 667         os_random_seed(td->rand_seeds[1], &td->verify_state);
 668         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 669
 670         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 671                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 672
 673         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 674         os_random_seed(td->rand_seeds[6], &td->trim_state);
 675
 676         if (!td_random(td))
 677                 return;
 678
 679         if (td->o.rand_repeatable)
 680                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 681
 682         os_random_seed(td->rand_seeds[4], &td->random_state);
 683 }
 684
 685 static void td_fill_rand_seeds_internal(struct thread_data *td)
 686 {
 687         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 688         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 689         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 690
 691         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 692                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 693
 694         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 695         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 696
 697         if (!td_random(td))
 698                 return;
 699
 700         if (td->o.rand_repeatable)
 701                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 702
 703         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 704 }
 705
 706 void td_fill_rand_seeds(struct thread_data *td)
 707 {
 708         if (td->o.use_os_rand)
 709                 td_fill_rand_seeds_os(td);
 710         else
 711                 td_fill_rand_seeds_internal(td);
 712
 713         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 714 }
 715
 716
 717 /*
 718  * Initializes the ioengine configured for a job, if it has not been done so
 719  * already.
 720  */
 721 int ioengine_load(struct thread_data *td)
 722 {
 723         const char *engine;
 724
 725         /*
 726          * Engine has already been loaded.
 727          */
 728         if (td->io_ops)
 729                 return 0;
 730
 731         engine = get_engine_name(td->o.ioengine);
 732         td->io_ops = load_ioengine(td, engine);
 733         if (!td->io_ops) {
 734                 log_err("fio: failed to load engine %s\n", engine);
 735                 return 1;
 736         }
 737
 738         if (td->io_ops->option_struct_size && td->io_ops->options) {
 739                 /*
 740                  * In cases where td->eo is set, clone it for a child thread.
 741                  * This requires that the parent thread has the same ioengine,
 742                  * but that requirement must be enforced by the code which
 743                  * cloned the thread.
 744                  */
 745                 void *origeo = td->eo;
 746                 /*
 747                  * Otherwise use the default thread options.
 748                  */
 749                 if (!origeo && td != &def_thread && def_thread.eo &&
 750                     def_thread.io_ops->options == td->io_ops->options)
 751                         origeo = def_thread.eo;
 752
 753                 options_init(td->io_ops->options);
 754                 td->eo = malloc(td->io_ops->option_struct_size);
 755                 /*
 756                  * Use the default thread as an option template if this uses the
 757                  * same options structure and there are non-default options
 758                  * used.
 759                  */
 760                 if (origeo) {
 761                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 762                         options_mem_dupe(td->eo, td->io_ops->options);
 763                 } else {
 764                         memset(td->eo, 0, td->io_ops->option_struct_size);
 765                         fill_default_options(td->eo, td->io_ops->options);
 766                 }
 767                 *(struct thread_data **)td->eo = td;
 768         }
 769
 770         return 0;
 771 }
 772
 773 /*
 774  * Adds a job to the list of things todo. Sanitizes the various options
 775  * to make sure we don't have conflicts, and initializes various
 776  * members of td.
 777  */
 778 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 779 {
 780         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 781                                    "randread", "randwrite", "randrw",
 782                                    "trim", NULL, NULL, NULL, "randtrim" };
 783         unsigned int i;
 784         char fname[PATH_MAX];
 785         int numjobs, file_alloced;
 786
 787         /*
 788          * the def_thread is just for options, it's not a real job
 789          */
 790         if (td == &def_thread)
 791                 return 0;
 792
 793         /*
 794          * if we are just dumping the output command line, don't add the job
 795          */
 796         if (dump_cmdline) {
 797                 put_job(td);
 798                 return 0;
 799         }
 800
 801         if (profile_td_init(td))
 802                 goto err;
 803
 804         if (ioengine_load(td))
 805                 goto err;
 806
 807         if (td->o.use_thread)
 808                 nr_thread++;
 809         else
 810                 nr_process++;
 811
 812         if (td->o.odirect)
 813                 td->io_ops->flags |= FIO_RAWIO;
 814
 815         file_alloced = 0;
 816         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 817                 file_alloced = 1;
 818
 819                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 820                         add_file(td, jobname);
 821                 else {
 822                         for (i = 0; i < td->o.nr_files; i++) {
 823                                 sprintf(fname, "%s.%d.%d", jobname,
 824                                                         td->thread_number, i);
 825                                 add_file(td, fname);
 826                         }
 827                 }
 828         }
 829
 830         if (fixup_options(td))
 831                 goto err;
 832
 833         flow_init_job(td);
 834
 835         /*
 836          * IO engines only need this for option callbacks, and the address may
 837          * change in subprocesses.
 838          */
 839         if (td->eo)
 840                 *(struct thread_data **)td->eo = NULL;
 841
 842         if (td->io_ops->flags & FIO_DISKLESSIO) {
 843                 struct fio_file *f;
 844
 845                 for_each_file(td, f, i)
 846                         f->real_file_size = -1ULL;
 847         }
 848
 849         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
 850
 851         td->ts.clat_percentiles = td->o.clat_percentiles;
 852         if (td->o.overwrite_plist)
 853                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 854         else
 855                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 856
 857         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 858                 td->ts.clat_stat[i].min_val = ULONG_MAX;
 859                 td->ts.slat_stat[i].min_val = ULONG_MAX;
 860                 td->ts.lat_stat[i].min_val = ULONG_MAX;
 861                 td->ts.bw_stat[i].min_val = ULONG_MAX;
 862         }
 863         td->ddir_seq_nr = td->o.ddir_seq_nr;
 864
 865         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 866                 prev_group_jobs = 0;
 867                 groupid++;
 868         }
 869
 870         td->groupid = groupid;
 871         prev_group_jobs++;
 872
 873         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
 874                 td_verror(td, errno, "init_random_state");
 875                 goto err;
 876         }
 877
 878         if (setup_rate(td))
 879                 goto err;
 880
 881         if (td->o.write_lat_log) {
 882                 setup_log(&td->lat_log, td->o.log_avg_msec);
 883                 setup_log(&td->slat_log, td->o.log_avg_msec);
 884                 setup_log(&td->clat_log, td->o.log_avg_msec);
 885         }
 886         if (td->o.write_bw_log)
 887                 setup_log(&td->bw_log, td->o.log_avg_msec);
 888         if (td->o.write_iops_log)
 889                 setup_log(&td->iops_log, td->o.log_avg_msec);
 890
 891         if (!td->o.name)
 892                 td->o.name = strdup(jobname);
 893
 894         if (output_format == FIO_OUTPUT_NORMAL) {
 895                 if (!job_add_num) {
 896                         if (!strcmp(td->io_ops->name, "cpuio")) {
 897                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 898                                          " cpucycle=%u\n", td->o.name,
 899                                                         td->o.cpuload,
 900                                                         td->o.cpucycle);
 901                         } else {
 902                                 char *c1, *c2, *c3, *c4, *c5, *c6;
 903
 904                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 905                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 906                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 907                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 908                                 c5 = to_kmg(td->o.min_bs[DDIR_TRIM]);
 909                                 c6 = to_kmg(td->o.max_bs[DDIR_TRIM]);
 910
 911                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
 912                                          " ioengine=%s, iodepth=%u\n",
 913                                                 td->o.name, td->groupid,
 914                                                 ddir_str[td->o.td_ddir],
 915                                                 c1, c2, c3, c4, c5, c6,
 916                                                 td->io_ops->name,
 917                                                 td->o.iodepth);
 918
 919                                 free(c1);
 920                                 free(c2);
 921                                 free(c3);
 922                                 free(c4);
 923                                 free(c5);
 924                                 free(c6);
 925                         }
 926                 } else if (job_add_num == 1)
 927                         log_info("...\n");
 928         }
 929
 930         /*
 931          * recurse add identical jobs, clear numjobs and stonewall options
 932          * as they don't apply to sub-jobs
 933          */
 934         numjobs = td->o.numjobs;
 935         while (--numjobs) {
 936                 struct thread_data *td_new = get_new_job(0, td, 1);
 937
 938                 if (!td_new)
 939                         goto err;
 940
 941                 td_new->o.numjobs = 1;
 942                 td_new->o.stonewall = 0;
 943                 td_new->o.new_group = 0;
 944
 945                 if (file_alloced) {
 946                         td_new->o.filename = NULL;
 947                         td_new->files_index = 0;
 948                         td_new->files_size = 0;
 949                         td_new->files = NULL;
 950                 }
 951
 952                 job_add_num = numjobs - 1;
 953
 954                 if (add_job(td_new, jobname, job_add_num))
 955                         goto err;
 956         }
 957
 958         return 0;
 959 err:
 960         put_job(td);
 961         return -1;
 962 }
 963
 964 /*
 965  * Parse as if 'o' was a command line
 966  */
 967 void add_job_opts(const char **o)
 968 {
 969         struct thread_data *td, *td_parent;
 970         int i, in_global = 1;
 971         char jobname[32];
 972
 973         i = 0;
 974         td_parent = td = NULL;
 975         while (o[i]) {
 976                 if (!strncmp(o[i], "name", 4)) {
 977                         in_global = 0;
 978                         if (td)
 979                                 add_job(td, jobname, 0);
 980                         td = NULL;
 981                         sprintf(jobname, "%s", o[i] + 5);
 982                 }
 983                 if (in_global && !td_parent)
 984                         td_parent = get_new_job(1, &def_thread, 0);
 985                 else if (!in_global && !td) {
 986                         if (!td_parent)
 987                                 td_parent = &def_thread;
 988                         td = get_new_job(0, td_parent, 0);
 989                 }
 990                 if (in_global)
 991                         fio_options_parse(td_parent, (char **) &o[i], 1);
 992                 else
 993                         fio_options_parse(td, (char **) &o[i], 1);
 994                 i++;
 995         }
 996
 997         if (td)
 998                 add_job(td, jobname, 0);
 999 }
1000
1001 static int skip_this_section(const char *name)
1002 {
1003         int i;
1004
1005         if (!nr_job_sections)
1006                 return 0;
1007         if (!strncmp(name, "global", 6))
1008                 return 0;
1009
1010         for (i = 0; i < nr_job_sections; i++)
1011                 if (!strcmp(job_sections[i], name))
1012                         return 0;
1013
1014         return 1;
1015 }
1016
1017 static int is_empty_or_comment(char *line)
1018 {
1019         unsigned int i;
1020
1021         for (i = 0; i < strlen(line); i++) {
1022                 if (line[i] == ';')
1023                         return 1;
1024                 if (line[i] == '#')
1025                         return 1;
1026                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1027                         return 0;
1028         }
1029
1030         return 1;
1031 }
1032
1033 /*
1034  * This is our [ini] type file parser.
1035  */
1036 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1037 {
1038         unsigned int global;
1039         struct thread_data *td;
1040         char *string, *name;
1041         FILE *f;
1042         char *p;
1043         int ret = 0, stonewall;
1044         int first_sect = 1;
1045         int skip_fgets = 0;
1046         int inside_skip = 0;
1047         char **opts;
1048         int i, alloc_opts, num_opts;
1049
1050         if (is_buf)
1051                 f = NULL;
1052         else {
1053                 if (!strcmp(file, "-"))
1054                         f = stdin;
1055                 else
1056                         f = fopen(file, "r");
1057
1058                 if (!f) {
1059                         perror("fopen job file");
1060                         return 1;
1061                 }
1062         }
1063
1064         string = malloc(4096);
1065
1066         /*
1067          * it's really 256 + small bit, 280 should suffice
1068          */
1069         name = malloc(280);
1070         memset(name, 0, 280);
1071
1072         alloc_opts = 8;
1073         opts = malloc(sizeof(char *) * alloc_opts);
1074         num_opts = 0;
1075
1076         stonewall = stonewall_flag;
1077         do {
1078                 /*
1079                  * if skip_fgets is set, we already have loaded a line we
1080                  * haven't handled.
1081                  */
1082                 if (!skip_fgets) {
1083                         if (is_buf)
1084                                 p = strsep(&file, "\n");
1085                         else
1086                                 p = fgets(string, 4096, f);
1087                         if (!p)
1088                                 break;
1089                 }
1090
1091                 skip_fgets = 0;
1092                 strip_blank_front(&p);
1093                 strip_blank_end(p);
1094
1095                 if (is_empty_or_comment(p))
1096                         continue;
1097                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1098                         if (inside_skip)
1099                                 continue;
1100                         log_err("fio: option <%s> outside of [] job section\n",
1101                                                                         p);
1102                         break;
1103                 }
1104
1105                 name[strlen(name) - 1] = '\0';
1106
1107                 if (skip_this_section(name)) {
1108                         inside_skip = 1;
1109                         continue;
1110                 } else
1111                         inside_skip = 0;
1112
1113                 global = !strncmp(name, "global", 6);
1114
1115                 if (dump_cmdline) {
1116                         if (first_sect)
1117                                 log_info("fio ");
1118                         if (!global)
1119                                 log_info("--name=%s ", name);
1120                         first_sect = 0;
1121                 }
1122
1123                 td = get_new_job(global, &def_thread, 0);
1124                 if (!td) {
1125                         ret = 1;
1126                         break;
1127                 }
1128
1129                 /*
1130                  * Seperate multiple job files by a stonewall
1131                  */
1132                 if (!global && stonewall) {
1133                         td->o.stonewall = stonewall;
1134                         stonewall = 0;
1135                 }
1136
1137                 num_opts = 0;
1138                 memset(opts, 0, alloc_opts * sizeof(char *));
1139
1140                 while (1) {
1141                         if (is_buf)
1142                                 p = strsep(&file, "\n");
1143                         else
1144                                 p = fgets(string, 4096, f);
1145                         if (!p)
1146                                 break;
1147
1148                         if (is_empty_or_comment(p))
1149                                 continue;
1150
1151                         strip_blank_front(&p);
1152
1153                         /*
1154                          * new section, break out and make sure we don't
1155                          * fgets() a new line at the top.
1156                          */
1157                         if (p[0] == '[') {
1158                                 skip_fgets = 1;
1159                                 break;
1160                         }
1161
1162                         strip_blank_end(p);
1163
1164                         if (num_opts == alloc_opts) {
1165                                 alloc_opts <<= 1;
1166                                 opts = realloc(opts,
1167                                                 alloc_opts * sizeof(char *));
1168                         }
1169
1170                         opts[num_opts] = strdup(p);
1171                         num_opts++;
1172                 }
1173
1174                 ret = fio_options_parse(td, opts, num_opts);
1175                 if (!ret) {
1176                         if (dump_cmdline)
1177                                 for (i = 0; i < num_opts; i++)
1178                                         log_info("--%s ", opts[i]);
1179
1180                         ret = add_job(td, name, 0);
1181                 } else {
1182                         log_err("fio: job %s dropped\n", name);
1183                         put_job(td);
1184                 }
1185
1186                 for (i = 0; i < num_opts; i++)
1187                         free(opts[i]);
1188                 num_opts = 0;
1189         } while (!ret);
1190
1191         if (dump_cmdline)
1192                 log_info("\n");
1193
1194         i = 0;
1195         while (i < nr_job_sections) {
1196                 free(job_sections[i]);
1197                 i++;
1198         }
1199
1200         for (i = 0; i < num_opts; i++)
1201                 free(opts[i]);
1202
1203         free(string);
1204         free(name);
1205         free(opts);
1206         if (!is_buf && f != stdin)
1207                 fclose(f);
1208         return ret;
1209 }
1210
1211 static int fill_def_thread(void)
1212 {
1213         memset(&def_thread, 0, sizeof(def_thread));
1214
1215         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1216         def_thread.o.timeout = def_timeout;
1217         def_thread.o.error_dump = 1;
1218         /*
1219          * fill default options
1220          */
1221         fio_fill_default_options(&def_thread);
1222         return 0;
1223 }
1224
1225 static void usage(const char *name)
1226 {
1227         printf("%s\n", fio_version_string);
1228         printf("%s [options] [job options] <job file(s)>\n", name);
1229         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1230                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1231                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1232         printf("  --output\t\tWrite output to file\n");
1233         printf("  --runtime\t\tRuntime in seconds\n");
1234         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1235         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1236         printf("  --minimal\t\tMinimal (terse) output\n");
1237         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1238         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1239         printf("  --version\t\tPrint version info and exit\n");
1240         printf("  --help\t\tPrint this page\n");
1241         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1242                 " them\n");
1243         printf("  --enghelp=engine\tPrint ioengine help, or list"
1244                 " available ioengines\n");
1245         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1246                 " cmd\n");
1247         printf("  --showcmd\t\tTurn a job file into command line options\n");
1248         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1249         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1250         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1251                 " writes\n");
1252         printf("  --section=name\tOnly run specified section in job file\n");
1253         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1254                 " (def 1024)\n");
1255         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1256         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1257         printf("  --server=args\t\tStart a backend fio server\n");
1258         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1259         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1260         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1261         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1262 }
1263
1264 #ifdef FIO_INC_DEBUG
1265 struct debug_level debug_levels[] = {
1266         { .name = "process",    .shift = FD_PROCESS, },
1267         { .name = "file",       .shift = FD_FILE, },
1268         { .name = "io",         .shift = FD_IO, },
1269         { .name = "mem",        .shift = FD_MEM, },
1270         { .name = "blktrace",   .shift = FD_BLKTRACE },
1271         { .name = "verify",     .shift = FD_VERIFY },
1272         { .name = "random",     .shift = FD_RANDOM },
1273         { .name = "parse",      .shift = FD_PARSE },
1274         { .name = "diskutil",   .shift = FD_DISKUTIL },
1275         { .name = "job",        .shift = FD_JOB },
1276         { .name = "mutex",      .shift = FD_MUTEX },
1277         { .name = "profile",    .shift = FD_PROFILE },
1278         { .name = "time",       .shift = FD_TIME },
1279         { .name = "net",        .shift = FD_NET },
1280         { .name = NULL, },
1281 };
1282
1283 static int set_debug(const char *string)
1284 {
1285         struct debug_level *dl;
1286         char *p = (char *) string;
1287         char *opt;
1288         int i;
1289
1290         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1291                 log_info("fio: dumping debug options:");
1292                 for (i = 0; debug_levels[i].name; i++) {
1293                         dl = &debug_levels[i];
1294                         log_info("%s,", dl->name);
1295                 }
1296                 log_info("all\n");
1297                 return 1;
1298         }
1299
1300         while ((opt = strsep(&p, ",")) != NULL) {
1301                 int found = 0;
1302
1303                 if (!strncmp(opt, "all", 3)) {
1304                         log_info("fio: set all debug options\n");
1305                         fio_debug = ~0UL;
1306                         continue;
1307                 }
1308
1309                 for (i = 0; debug_levels[i].name; i++) {
1310                         dl = &debug_levels[i];
1311                         found = !strncmp(opt, dl->name, strlen(dl->name));
1312                         if (!found)
1313                                 continue;
1314
1315                         if (dl->shift == FD_JOB) {
1316                                 opt = strchr(opt, ':');
1317                                 if (!opt) {
1318                                         log_err("fio: missing job number\n");
1319                                         break;
1320                                 }
1321                                 opt++;
1322                                 fio_debug_jobno = atoi(opt);
1323                                 log_info("fio: set debug jobno %d\n",
1324                                                         fio_debug_jobno);
1325                         } else {
1326                                 log_info("fio: set debug option %s\n", opt);
1327                                 fio_debug |= (1UL << dl->shift);
1328                         }
1329                         break;
1330                 }
1331
1332                 if (!found)
1333                         log_err("fio: debug mask %s not found\n", opt);
1334         }
1335         return 0;
1336 }
1337 #else
1338 static int set_debug(const char *string)
1339 {
1340         log_err("fio: debug tracing not included in build\n");
1341         return 1;
1342 }
1343 #endif
1344
1345 static void fio_options_fill_optstring(void)
1346 {
1347         char *ostr = cmd_optstr;
1348         int i, c;
1349
1350         c = i = 0;
1351         while (l_opts[i].name) {
1352                 ostr[c++] = l_opts[i].val;
1353                 if (l_opts[i].has_arg == required_argument)
1354                         ostr[c++] = ':';
1355                 else if (l_opts[i].has_arg == optional_argument) {
1356                         ostr[c++] = ':';
1357                         ostr[c++] = ':';
1358                 }
1359                 i++;
1360         }
1361         ostr[c] = '\0';
1362 }
1363
1364 static int client_flag_set(char c)
1365 {
1366         int i;
1367
1368         i = 0;
1369         while (l_opts[i].name) {
1370                 int val = l_opts[i].val;
1371
1372                 if (c == (val & 0xff))
1373                         return (val & FIO_CLIENT_FLAG);
1374
1375                 i++;
1376         }
1377
1378         return 0;
1379 }
1380
1381 void parse_cmd_client(void *client, char *opt)
1382 {
1383         fio_client_add_cmd_option(client, opt);
1384 }
1385
1386 int parse_cmd_line(int argc, char *argv[])
1387 {
1388         struct thread_data *td = NULL;
1389         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1390         char *ostr = cmd_optstr;
1391         void *pid_file = NULL;
1392         void *cur_client = NULL;
1393         int backend = 0;
1394
1395         /*
1396          * Reset optind handling, since we may call this multiple times
1397          * for the backend.
1398          */
1399         optind = 1;
1400
1401         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1402                 did_arg = 1;
1403
1404                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1405                         parse_cmd_client(cur_client, argv[optind - 1]);
1406                         c &= ~FIO_CLIENT_FLAG;
1407                 }
1408
1409                 switch (c) {
1410                 case 'a':
1411                         smalloc_pool_size = atoi(optarg);
1412                         break;
1413                 case 't':
1414                         def_timeout = atoi(optarg);
1415                         break;
1416                 case 'l':
1417                         write_lat_log = 1;
1418                         break;
1419                 case 'b':
1420                         write_bw_log = 1;
1421                         break;
1422                 case 'o':
1423                         f_out = fopen(optarg, "w+");
1424                         if (!f_out) {
1425                                 perror("fopen output");
1426                                 exit(1);
1427                         }
1428                         f_err = f_out;
1429                         break;
1430                 case 'm':
1431                         output_format = FIO_OUTPUT_TERSE;
1432                         break;
1433                 case 'F':
1434                         if (!strcmp(optarg, "minimal") ||
1435                             !strcmp(optarg, "terse") ||
1436                             !strcmp(optarg, "csv"))
1437                                 output_format = FIO_OUTPUT_TERSE;
1438                         else if (!strcmp(optarg, "json"))
1439                                 output_format = FIO_OUTPUT_JSON;
1440                         else
1441                                 output_format = FIO_OUTPUT_NORMAL;
1442                         break;
1443                 case 'h':
1444                         if (!cur_client) {
1445                                 usage(argv[0]);
1446                                 do_exit++;
1447                         }
1448                         break;
1449                 case 'c':
1450                         if (!cur_client) {
1451                                 fio_show_option_help(optarg);
1452                                 do_exit++;
1453                         }
1454                         break;
1455                 case 'i':
1456                         if (!cur_client) {
1457                                 fio_show_ioengine_help(optarg);
1458                                 do_exit++;
1459                         }
1460                         break;
1461                 case 's':
1462                         dump_cmdline = 1;
1463                         break;
1464                 case 'r':
1465                         read_only = 1;
1466                         break;
1467                 case 'v':
1468                         if (!cur_client) {
1469                                 log_info("%s\n", fio_version_string);
1470                                 do_exit++;
1471                         }
1472                         break;
1473                 case 'V':
1474                         terse_version = atoi(optarg);
1475                         if (!(terse_version == 2 || terse_version == 3 ||
1476                              terse_version == 4)) {
1477                                 log_err("fio: bad terse version format\n");
1478                                 exit_val = 1;
1479                                 do_exit++;
1480                         }
1481                         break;
1482                 case 'e':
1483                         if (!strcmp("always", optarg))
1484                                 eta_print = FIO_ETA_ALWAYS;
1485                         else if (!strcmp("never", optarg))
1486                                 eta_print = FIO_ETA_NEVER;
1487                         break;
1488                 case 'd':
1489                         if (set_debug(optarg))
1490                                 do_exit++;
1491                         break;
1492                 case 'x': {
1493                         size_t new_size;
1494
1495                         if (!strcmp(optarg, "global")) {
1496                                 log_err("fio: can't use global as only "
1497                                         "section\n");
1498                                 do_exit++;
1499                                 exit_val = 1;
1500                                 break;
1501                         }
1502                         new_size = (nr_job_sections + 1) * sizeof(char *);
1503                         job_sections = realloc(job_sections, new_size);
1504                         job_sections[nr_job_sections] = strdup(optarg);
1505                         nr_job_sections++;
1506                         break;
1507                         }
1508                 case 'p':
1509                         exec_profile = strdup(optarg);
1510                         break;
1511                 case FIO_GETOPT_JOB: {
1512                         const char *opt = l_opts[lidx].name;
1513                         char *val = optarg;
1514
1515                         if (!strncmp(opt, "name", 4) && td) {
1516                                 ret = add_job(td, td->o.name ?: "fio", 0);
1517                                 if (ret)
1518                                         return 0;
1519                                 td = NULL;
1520                         }
1521                         if (!td) {
1522                                 int is_section = !strncmp(opt, "name", 4);
1523                                 int global = 0;
1524
1525                                 if (!is_section || !strncmp(val, "global", 6))
1526                                         global = 1;
1527
1528                                 if (is_section && skip_this_section(val))
1529                                         continue;
1530
1531                                 td = get_new_job(global, &def_thread, 1);
1532                                 if (!td || ioengine_load(td))
1533                                         return 0;
1534                                 fio_options_set_ioengine_opts(l_opts, td);
1535                         }
1536
1537                         ret = fio_cmd_option_parse(td, opt, val);
1538
1539                         if (!ret && !strcmp(opt, "ioengine")) {
1540                                 free_ioengine(td);
1541                                 if (ioengine_load(td))
1542                                         return 0;
1543                                 fio_options_set_ioengine_opts(l_opts, td);
1544                         }
1545                         break;
1546                 }
1547                 case FIO_GETOPT_IOENGINE: {
1548                         const char *opt = l_opts[lidx].name;
1549                         char *val = optarg;
1550                         opt = l_opts[lidx].name;
1551                         val = optarg;
1552                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1553                         break;
1554                 }
1555                 case 'w':
1556                         warnings_fatal = 1;
1557                         break;
1558                 case 'j':
1559                         max_jobs = atoi(optarg);
1560                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1561                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1562                                 do_exit++;
1563                                 exit_val = 1;
1564                         }
1565                         break;
1566                 case 'S':
1567                         if (nr_clients) {
1568                                 log_err("fio: can't be both client and server\n");
1569                                 do_exit++;
1570                                 exit_val = 1;
1571                                 break;
1572                         }
1573                         if (optarg)
1574                                 fio_server_set_arg(optarg);
1575                         is_backend = 1;
1576                         backend = 1;
1577                         break;
1578                 case 'D':
1579                         pid_file = strdup(optarg);
1580                         break;
1581                 case 'C':
1582                         if (is_backend) {
1583                                 log_err("fio: can't be both client and server\n");
1584                                 do_exit++;
1585                                 exit_val = 1;
1586                                 break;
1587                         }
1588                         if (fio_client_add(optarg, &cur_client)) {
1589                                 log_err("fio: failed adding client %s\n", optarg);
1590                                 do_exit++;
1591                                 exit_val = 1;
1592                                 break;
1593                         }
1594                         /*
1595                          * If the next argument exists and isn't an option,
1596                          * assume it's a job file for this client only.
1597                          */
1598                         while (optind < argc) {
1599                                 if (!strncmp(argv[optind], "--", 2) ||
1600                                     !strncmp(argv[optind], "-", 1))
1601                                         break;
1602
1603                                 fio_client_add_ini_file(cur_client, argv[optind]);
1604                                 optind++;
1605                         }
1606                         break;
1607                 default:
1608                         do_exit++;
1609                         exit_val = 1;
1610                         break;
1611                 }
1612                 if (do_exit)
1613                         break;
1614         }
1615
1616         if (do_exit) {
1617                 if (exit_val && !(is_backend || nr_clients))
1618                         exit(exit_val);
1619         }
1620
1621         if (nr_clients && fio_clients_connect()) {
1622                 do_exit++;
1623                 exit_val = 1;
1624                 return -1;
1625         }
1626
1627         if (is_backend && backend)
1628                 return fio_start_server(pid_file);
1629
1630         if (td) {
1631                 if (!ret)
1632                         ret = add_job(td, td->o.name ?: "fio", 0);
1633         }
1634
1635         while (!ret && optind < argc) {
1636                 ini_idx++;
1637                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1638                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1639                 optind++;
1640         }
1641
1642         return ini_idx;
1643 }
1644
1645 int parse_options(int argc, char *argv[])
1646 {
1647         int job_files, i;
1648
1649         f_out = stdout;
1650         f_err = stderr;
1651
1652         fio_options_fill_optstring();
1653         fio_options_dup_and_init(l_opts);
1654
1655         atexit(free_shm);
1656
1657         if (fill_def_thread())
1658                 return 1;
1659
1660         job_files = parse_cmd_line(argc, argv);
1661
1662         if (job_files > 0) {
1663                 for (i = 0; i < job_files; i++) {
1664                         if (fill_def_thread())
1665                                 return 1;
1666                         if (nr_clients) {
1667                                 if (fio_clients_send_ini(ini_file[i]))
1668                                         return 1;
1669                                 free(ini_file[i]);
1670                         } else if (!is_backend) {
1671                                 if (parse_jobs_ini(ini_file[i], 0, i))
1672                                         return 1;
1673                                 free(ini_file[i]);
1674                         }
1675                 }
1676         } else if (nr_clients) {
1677                 if (fill_def_thread())
1678                         return 1;
1679                 if (fio_clients_send_ini(NULL))
1680                         return 1;
1681         }
1682
1683         free(ini_file);
1684         fio_options_free(&def_thread);
1685
1686         if (!thread_number) {
1687                 if (dump_cmdline)
1688                         return 0;
1689                 if (exec_profile)
1690                         return 0;
1691                 if (is_backend || nr_clients)
1692                         return 0;
1693                 if (did_arg)
1694                         return 0;
1695
1696                 log_err("No jobs(s) defined\n\n");
1697
1698                 if (!did_arg) {
1699                         usage(argv[0]);
1700                         return 1;
1701                 }
1702
1703                 return 0;
1704         }
1705
1706         if (def_thread.o.gtod_offload) {
1707                 fio_gtod_init();
1708                 fio_gtod_offload = 1;
1709                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1710         }
1711
1712         if (output_format == FIO_OUTPUT_NORMAL)
1713                 log_info("%s\n", fio_version_string);
1714
1715         return 0;
1716 }