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
  15 #include "fio.h"
  16 #ifndef FIO_NO_HAVE_SHM_H
  17 #include <sys/shm.h>
  18 #endif
  19
  20 #include "parse.h"
  21 #include "smalloc.h"
  22 #include "filehash.h"
  23 #include "verify.h"
  24 #include "profile.h"
  25 #include "server.h"
  26 #include "idletime.h"
  27
  28 #include "lib/getopt.h"
  29 #include "lib/strcasestr.h"
  30
  31 const char fio_version_string[] = FIO_VERSION;
  32
  33 #define FIO_RANDSEED            (0xb1899bedUL)
  34
  35 static char **ini_file;
  36 static int max_jobs = FIO_MAX_JOBS;
  37 static int dump_cmdline;
  38 static int def_timeout;
  39 static int parse_only;
  40
  41 static struct thread_data def_thread;
  42 struct thread_data *threads = NULL;
  43
  44 int exitall_on_terminate = 0;
  45 int output_format = FIO_OUTPUT_NORMAL;
  46 int append_terse_output = 0;
  47 int eta_print = FIO_ETA_AUTO;
  48 int eta_new_line = 0;
  49 FILE *f_out = NULL;
  50 FILE *f_err = NULL;
  51 char **job_sections = NULL;
  52 int nr_job_sections = 0;
  53 char *exec_profile = NULL;
  54 int warnings_fatal = 0;
  55 int terse_version = 3;
  56 int is_backend = 0;
  57 int nr_clients = 0;
  58 int log_syslog = 0;
  59
  60 int write_bw_log = 0;
  61 int read_only = 0;
  62 int status_interval = 0;
  63
  64 static int write_lat_log;
  65
  66 static int prev_group_jobs;
  67
  68 unsigned long fio_debug = 0;
  69 unsigned int fio_debug_jobno = -1;
  70 unsigned int *fio_debug_jobp = NULL;
  71
  72 static char cmd_optstr[256];
  73 static int did_arg;
  74
  75 #define FIO_CLIENT_FLAG         (1 << 16)
  76
  77 /*
  78  * Command line options. These will contain the above, plus a few
  79  * extra that only pertain to fio itself and not jobs.
  80  */
  81 static struct option l_opts[FIO_NR_OPTIONS] = {
  82         {
  83                 .name           = (char *) "output",
  84                 .has_arg        = required_argument,
  85                 .val            = 'o' | FIO_CLIENT_FLAG,
  86         },
  87         {
  88                 .name           = (char *) "timeout",
  89                 .has_arg        = required_argument,
  90                 .val            = 't' | FIO_CLIENT_FLAG,
  91         },
  92         {
  93                 .name           = (char *) "latency-log",
  94                 .has_arg        = required_argument,
  95                 .val            = 'l' | FIO_CLIENT_FLAG,
  96         },
  97         {
  98                 .name           = (char *) "bandwidth-log",
  99                 .has_arg        = required_argument,
 100                 .val            = 'b' | FIO_CLIENT_FLAG,
 101         },
 102         {
 103                 .name           = (char *) "minimal",
 104                 .has_arg        = no_argument,
 105                 .val            = 'm' | FIO_CLIENT_FLAG,
 106         },
 107         {
 108                 .name           = (char *) "output-format",
 109                 .has_arg        = optional_argument,
 110                 .val            = 'F' | FIO_CLIENT_FLAG,
 111         },
 112         {
 113                 .name           = (char *) "append-terse",
 114                 .has_arg        = optional_argument,
 115                 .val            = 'f',
 116         },
 117         {
 118                 .name           = (char *) "version",
 119                 .has_arg        = no_argument,
 120                 .val            = 'v' | FIO_CLIENT_FLAG,
 121         },
 122         {
 123                 .name           = (char *) "help",
 124                 .has_arg        = no_argument,
 125                 .val            = 'h' | FIO_CLIENT_FLAG,
 126         },
 127         {
 128                 .name           = (char *) "cmdhelp",
 129                 .has_arg        = optional_argument,
 130                 .val            = 'c' | FIO_CLIENT_FLAG,
 131         },
 132         {
 133                 .name           = (char *) "enghelp",
 134                 .has_arg        = optional_argument,
 135                 .val            = 'i' | FIO_CLIENT_FLAG,
 136         },
 137         {
 138                 .name           = (char *) "showcmd",
 139                 .has_arg        = no_argument,
 140                 .val            = 's' | FIO_CLIENT_FLAG,
 141         },
 142         {
 143                 .name           = (char *) "readonly",
 144                 .has_arg        = no_argument,
 145                 .val            = 'r' | FIO_CLIENT_FLAG,
 146         },
 147         {
 148                 .name           = (char *) "eta",
 149                 .has_arg        = required_argument,
 150                 .val            = 'e' | FIO_CLIENT_FLAG,
 151         },
 152         {
 153                 .name           = (char *) "eta-newline",
 154                 .has_arg        = required_argument,
 155                 .val            = 'E' | FIO_CLIENT_FLAG,
 156         },
 157         {
 158                 .name           = (char *) "debug",
 159                 .has_arg        = required_argument,
 160                 .val            = 'd' | FIO_CLIENT_FLAG,
 161         },
 162         {
 163                 .name           = (char *) "parse-only",
 164                 .has_arg        = no_argument,
 165                 .val            = 'P' | FIO_CLIENT_FLAG,
 166         },
 167         {
 168                 .name           = (char *) "section",
 169                 .has_arg        = required_argument,
 170                 .val            = 'x' | FIO_CLIENT_FLAG,
 171         },
 172         {
 173                 .name           = (char *) "alloc-size",
 174                 .has_arg        = required_argument,
 175                 .val            = 'a' | FIO_CLIENT_FLAG,
 176         },
 177         {
 178                 .name           = (char *) "profile",
 179                 .has_arg        = required_argument,
 180                 .val            = 'p' | FIO_CLIENT_FLAG,
 181         },
 182         {
 183                 .name           = (char *) "warnings-fatal",
 184                 .has_arg        = no_argument,
 185                 .val            = 'w' | FIO_CLIENT_FLAG,
 186         },
 187         {
 188                 .name           = (char *) "max-jobs",
 189                 .has_arg        = required_argument,
 190                 .val            = 'j' | FIO_CLIENT_FLAG,
 191         },
 192         {
 193                 .name           = (char *) "terse-version",
 194                 .has_arg        = required_argument,
 195                 .val            = 'V' | FIO_CLIENT_FLAG,
 196         },
 197         {
 198                 .name           = (char *) "server",
 199                 .has_arg        = optional_argument,
 200                 .val            = 'S',
 201         },
 202         {       .name           = (char *) "daemonize",
 203                 .has_arg        = required_argument,
 204                 .val            = 'D',
 205         },
 206         {
 207                 .name           = (char *) "client",
 208                 .has_arg        = required_argument,
 209                 .val            = 'C',
 210         },
 211         {
 212                 .name           = (char *) "cpuclock-test",
 213                 .has_arg        = no_argument,
 214                 .val            = 'T',
 215         },
 216         {
 217                 .name           = (char *) "crctest",
 218                 .has_arg        = optional_argument,
 219                 .val            = 'G',
 220         },
 221         {
 222                 .name           = (char *) "idle-prof",
 223                 .has_arg        = required_argument,
 224                 .val            = 'I',
 225         },
 226         {
 227                 .name           = (char *) "status-interval",
 228                 .has_arg        = required_argument,
 229                 .val            = 'L',
 230         },
 231         {
 232                 .name           = NULL,
 233         },
 234 };
 235
 236 void free_threads_shm(void)
 237 {
 238         struct shmid_ds sbuf;
 239
 240         if (threads) {
 241                 void *tp = threads;
 242
 243                 threads = NULL;
 244                 shmdt(tp);
 245                 shmctl(shm_id, IPC_RMID, &sbuf);
 246                 shm_id = -1;
 247         }
 248 }
 249
 250 void free_shm(void)
 251 {
 252         if (threads) {
 253                 file_hash_exit();
 254                 flow_exit();
 255                 fio_debug_jobp = NULL;
 256                 free_threads_shm();
 257         }
 258
 259         options_free(fio_options, &def_thread);
 260         scleanup();
 261 }
 262
 263 /*
 264  * The thread area is shared between the main process and the job
 265  * threads/processes. So setup a shared memory segment that will hold
 266  * all the job info. We use the end of the region for keeping track of
 267  * open files across jobs, for file sharing.
 268  */
 269 static int setup_thread_area(void)
 270 {
 271         void *hash;
 272
 273         if (threads)
 274                 return 0;
 275
 276         /*
 277          * 1024 is too much on some machines, scale max_jobs if
 278          * we get a failure that looks like too large a shm segment
 279          */
 280         do {
 281                 size_t size = max_jobs * sizeof(struct thread_data);
 282
 283                 size += file_hash_size;
 284                 size += sizeof(unsigned int);
 285
 286                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 287                 if (shm_id != -1)
 288                         break;
 289                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 290                         perror("shmget");
 291                         break;
 292                 }
 293
 294                 max_jobs >>= 1;
 295         } while (max_jobs);
 296
 297         if (shm_id == -1)
 298                 return 1;
 299
 300         threads = shmat(shm_id, NULL, 0);
 301         if (threads == (void *) -1) {
 302                 perror("shmat");
 303                 return 1;
 304         }
 305
 306         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 307         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 308         fio_debug_jobp = (void *) hash + file_hash_size;
 309         *fio_debug_jobp = -1;
 310         file_hash_init(hash);
 311
 312         flow_init();
 313
 314         return 0;
 315 }
 316
 317 /*
 318  * Return a free job structure.
 319  */
 320 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 321                                        int preserve_eo)
 322 {
 323         struct thread_data *td;
 324
 325         if (global)
 326                 return &def_thread;
 327         if (setup_thread_area()) {
 328                 log_err("error: failed to setup shm segment\n");
 329                 return NULL;
 330         }
 331         if (thread_number >= max_jobs) {
 332                 log_err("error: maximum number of jobs (%d) reached.\n",
 333                                 max_jobs);
 334                 return NULL;
 335         }
 336
 337         td = &threads[thread_number++];
 338         *td = *parent;
 339
 340         td->io_ops = NULL;
 341         if (!preserve_eo)
 342                 td->eo = NULL;
 343
 344         td->o.uid = td->o.gid = -1U;
 345
 346         dup_files(td, parent);
 347         fio_options_mem_dupe(td);
 348
 349         profile_add_hooks(td);
 350
 351         td->thread_number = thread_number;
 352
 353         if (!parent || !parent->o.group_reporting)
 354                 stat_number++;
 355
 356         return td;
 357 }
 358
 359 static void put_job(struct thread_data *td)
 360 {
 361         if (td == &def_thread)
 362                 return;
 363
 364         profile_td_exit(td);
 365         flow_exit_job(td);
 366
 367         if (td->error)
 368                 log_info("fio: %s\n", td->verror);
 369
 370         fio_options_free(td);
 371         if (td->io_ops)
 372                 free_ioengine(td);
 373
 374         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 375         thread_number--;
 376 }
 377
 378 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 379 {
 380         unsigned int bs = td->o.min_bs[ddir];
 381
 382         assert(ddir_rw(ddir));
 383
 384         if (td->o.rate[ddir])
 385                 td->rate_bps[ddir] = td->o.rate[ddir];
 386         else
 387                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 388
 389         if (!td->rate_bps[ddir]) {
 390                 log_err("rate lower than supported\n");
 391                 return -1;
 392         }
 393
 394         td->rate_pending_usleep[ddir] = 0;
 395         return 0;
 396 }
 397
 398 static int setup_rate(struct thread_data *td)
 399 {
 400         int ret = 0;
 401
 402         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 403                 ret = __setup_rate(td, DDIR_READ);
 404         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 405                 ret |= __setup_rate(td, DDIR_WRITE);
 406         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 407                 ret |= __setup_rate(td, DDIR_TRIM);
 408
 409         return ret;
 410 }
 411
 412 static int fixed_block_size(struct thread_options *o)
 413 {
 414         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 415                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 416                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 417                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 418                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 419 }
 420
 421
 422 static unsigned long long get_rand_start_delay(struct thread_data *td)
 423 {
 424         unsigned long long delayrange;
 425         unsigned long r;
 426
 427         delayrange = td->o.start_delay_high - td->o.start_delay;
 428
 429         if (td->o.use_os_rand) {
 430                 r = os_random_long(&td->delay_state);
 431                 delayrange = (unsigned long long) ((double) delayrange * (r / (OS_RAND_MAX + 1.0)));
 432         } else {
 433                 r = __rand(&td->__delay_state);
 434                 delayrange = (unsigned long long) ((double) delayrange * (r / (FRAND_MAX + 1.0)));
 435         }
 436
 437         delayrange += td->o.start_delay;
 438         return delayrange;
 439 }
 440
 441 /*
 442  * Lazy way of fixing up options that depend on each other. We could also
 443  * define option callback handlers, but this is easier.
 444  */
 445 static int fixup_options(struct thread_data *td)
 446 {
 447         struct thread_options *o = &td->o;
 448         int ret = 0;
 449
 450 #ifndef FIO_HAVE_PSHARED_MUTEX
 451         if (!o->use_thread) {
 452                 log_info("fio: this platform does not support process shared"
 453                          " mutexes, forcing use of threads. Use the 'thread'"
 454                          " option to get rid of this warning.\n");
 455                 o->use_thread = 1;
 456                 ret = warnings_fatal;
 457         }
 458 #endif
 459
 460         if (o->write_iolog_file && o->read_iolog_file) {
 461                 log_err("fio: read iolog overrides write_iolog\n");
 462                 free(o->write_iolog_file);
 463                 o->write_iolog_file = NULL;
 464                 ret = warnings_fatal;
 465         }
 466
 467         /*
 468          * only really works with 1 file
 469          */
 470         if (o->zone_size && o->open_files > 1)
 471                 o->zone_size = 0;
 472
 473         /*
 474          * If zone_range isn't specified, backward compatibility dictates it
 475          * should be made equal to zone_size.
 476          */
 477         if (o->zone_size && !o->zone_range)
 478                 o->zone_range = o->zone_size;
 479
 480         /*
 481          * Reads can do overwrites, we always need to pre-create the file
 482          */
 483         if (td_read(td) || td_rw(td))
 484                 o->overwrite = 1;
 485
 486         if (!o->min_bs[DDIR_READ])
 487                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 488         if (!o->max_bs[DDIR_READ])
 489                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 490         if (!o->min_bs[DDIR_WRITE])
 491                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 492         if (!o->max_bs[DDIR_WRITE])
 493                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 494         if (!o->min_bs[DDIR_TRIM])
 495                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 496         if (!o->max_bs[DDIR_TRIM])
 497                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 498
 499
 500         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 501         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 502
 503         /*
 504          * For random IO, allow blockalign offset other than min_bs.
 505          */
 506         if (!o->ba[DDIR_READ] || !td_random(td))
 507                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 508         if (!o->ba[DDIR_WRITE] || !td_random(td))
 509                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 510         if (!o->ba[DDIR_TRIM] || !td_random(td))
 511                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 512
 513         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 514             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 515             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 516             !o->norandommap) {
 517                 log_err("fio: Any use of blockalign= turns off randommap\n");
 518                 o->norandommap = 1;
 519                 ret = warnings_fatal;
 520         }
 521
 522         if (!o->file_size_high)
 523                 o->file_size_high = o->file_size_low;
 524
 525         if (o->start_delay_high)
 526                 o->start_delay = get_rand_start_delay(td);
 527
 528         if (o->norandommap && o->verify != VERIFY_NONE
 529             && !fixed_block_size(o))  {
 530                 log_err("fio: norandommap given for variable block sizes, "
 531                         "verify disabled\n");
 532                 o->verify = VERIFY_NONE;
 533                 ret = warnings_fatal;
 534         }
 535         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 536                 log_err("fio: bs_unaligned may not work with raw io\n");
 537
 538         /*
 539          * thinktime_spin must be less than thinktime
 540          */
 541         if (o->thinktime_spin > o->thinktime)
 542                 o->thinktime_spin = o->thinktime;
 543
 544         /*
 545          * The low water mark cannot be bigger than the iodepth
 546          */
 547         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 548                 o->iodepth_low = o->iodepth;
 549
 550         /*
 551          * If batch number isn't set, default to the same as iodepth
 552          */
 553         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 554                 o->iodepth_batch = o->iodepth;
 555
 556         if (o->nr_files > td->files_index)
 557                 o->nr_files = td->files_index;
 558
 559         if (o->open_files > o->nr_files || !o->open_files)
 560                 o->open_files = o->nr_files;
 561
 562         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 563             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 564             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 565             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 566                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 567                 ret = 1;
 568         }
 569         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 570             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 571             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 572             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 573             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 574             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 575                 log_err("fio: minimum rate exceeds rate\n");
 576                 ret = 1;
 577         }
 578
 579         if (!o->timeout && o->time_based) {
 580                 log_err("fio: time_based requires a runtime/timeout setting\n");
 581                 o->time_based = 0;
 582                 ret = warnings_fatal;
 583         }
 584
 585         if (o->fill_device && !o->size)
 586                 o->size = -1ULL;
 587
 588         if (o->verify != VERIFY_NONE) {
 589                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 590                         log_info("Multiple writers may overwrite blocks that "
 591                                 "belong to other jobs. This can cause "
 592                                 "verification failures.\n");
 593                         ret = warnings_fatal;
 594                 }
 595
 596                 o->refill_buffers = 1;
 597                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 598                     !o->verify_interval)
 599                         o->verify_interval = o->min_bs[DDIR_WRITE];
 600         }
 601
 602         if (o->pre_read) {
 603                 o->invalidate_cache = 0;
 604                 if (td->io_ops->flags & FIO_PIPEIO) {
 605                         log_info("fio: cannot pre-read files with an IO engine"
 606                                  " that isn't seekable. Pre-read disabled.\n");
 607                         ret = warnings_fatal;
 608                 }
 609         }
 610
 611         if (!o->unit_base) {
 612                 if (td->io_ops->flags & FIO_BIT_BASED)
 613                         o->unit_base = 1;
 614                 else
 615                         o->unit_base = 8;
 616         }
 617
 618 #ifndef CONFIG_FDATASYNC
 619         if (o->fdatasync_blocks) {
 620                 log_info("fio: this platform does not support fdatasync()"
 621                          " falling back to using fsync().  Use the 'fsync'"
 622                          " option instead of 'fdatasync' to get rid of"
 623                          " this warning\n");
 624                 o->fsync_blocks = o->fdatasync_blocks;
 625                 o->fdatasync_blocks = 0;
 626                 ret = warnings_fatal;
 627         }
 628 #endif
 629
 630 #ifdef WIN32
 631         /*
 632          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 633          * so fail if we're passed those flags
 634          */
 635         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 636                 log_err("fio: Windows does not support direct or non-buffered io with"
 637                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 638                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 639                 ret = 1;
 640         }
 641 #endif
 642
 643         /*
 644          * For fully compressible data, just zero them at init time.
 645          * It's faster than repeatedly filling it.
 646          */
 647         if (td->o.compress_percentage == 100) {
 648                 td->o.zero_buffers = 1;
 649                 td->o.compress_percentage = 0;
 650         }
 651
 652         /*
 653          * Using a non-uniform random distribution excludes usage of
 654          * a random map
 655          */
 656         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
 657                 td->o.norandommap = 1;
 658
 659         /*
 660          * If size is set but less than the min block size, complain
 661          */
 662         if (o->size && o->size < td_min_bs(td)) {
 663                 log_err("fio: size too small, must be larger than the IO size: %llu\n", (unsigned long long) o->size);
 664                 ret = 1;
 665         }
 666
 667         /*
 668          * O_ATOMIC implies O_DIRECT
 669          */
 670         if (td->o.oatomic)
 671                 td->o.odirect = 1;
 672
 673         /*
 674          * If randseed is set, that overrides randrepeat
 675          */
 676         if (td->o.rand_seed)
 677                 td->o.rand_repeatable = 0;
 678
 679         return ret;
 680 }
 681
 682 /*
 683  * This function leaks the buffer
 684  */
 685 char *fio_uint_to_kmg(unsigned int val)
 686 {
 687         char *buf = malloc(32);
 688         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 689         char *p = post;
 690
 691         do {
 692                 if (val & 1023)
 693                         break;
 694
 695                 val >>= 10;
 696                 p++;
 697         } while (*p);
 698
 699         snprintf(buf, 32, "%u%c", val, *p);
 700         return buf;
 701 }
 702
 703 /* External engines are specified by "external:name.o") */
 704 static const char *get_engine_name(const char *str)
 705 {
 706         char *p = strstr(str, ":");
 707
 708         if (!p)
 709                 return str;
 710
 711         p++;
 712         strip_blank_front(&p);
 713         strip_blank_end(p);
 714         return p;
 715 }
 716
 717 static int exists_and_not_file(const char *filename)
 718 {
 719         struct stat sb;
 720
 721         if (lstat(filename, &sb) == -1)
 722                 return 0;
 723
 724         /* \\.\ is the device namespace in Windows, where every file
 725          * is a device node */
 726         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 727                 return 0;
 728
 729         return 1;
 730 }
 731
 732 static void td_fill_rand_seeds_os(struct thread_data *td)
 733 {
 734         os_random_seed(td->rand_seeds[FIO_RAND_BS_OFF], &td->bsrange_state);
 735         os_random_seed(td->rand_seeds[FIO_RAND_VER_OFF], &td->verify_state);
 736         os_random_seed(td->rand_seeds[FIO_RAND_MIX_OFF], &td->rwmix_state);
 737
 738         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 739                 os_random_seed(td->rand_seeds[FIO_RAND_FILE_OFF], &td->next_file_state);
 740
 741         os_random_seed(td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], &td->file_size_state);
 742         os_random_seed(td->rand_seeds[FIO_RAND_TRIM_OFF], &td->trim_state);
 743         os_random_seed(td->rand_seeds[FIO_RAND_START_DELAY], &td->delay_state);
 744
 745         if (!td_random(td))
 746                 return;
 747
 748         if (td->o.rand_repeatable)
 749                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 750
 751         os_random_seed(td->rand_seeds[FIO_RAND_BLOCK_OFF], &td->random_state);
 752
 753         os_random_seed(td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], &td->seq_rand_state[DDIR_READ]);
 754         os_random_seed(td->rand_seeds[FIO_RAND_SEQ_RAND_WRITE_OFF], &td->seq_rand_state[DDIR_WRITE]);
 755         os_random_seed(td->rand_seeds[FIO_RAND_SEQ_RAND_TRIM_OFF], &td->seq_rand_state[DDIR_TRIM]);
 756 }
 757
 758 static void td_fill_rand_seeds_internal(struct thread_data *td)
 759 {
 760         init_rand_seed(&td->__bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF]);
 761         init_rand_seed(&td->__verify_state, td->rand_seeds[FIO_RAND_VER_OFF]);
 762         init_rand_seed(&td->__rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF]);
 763
 764         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 765                 init_rand_seed(&td->__next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF]);
 766
 767         init_rand_seed(&td->__file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
 768         init_rand_seed(&td->__trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
 769         init_rand_seed(&td->__delay_state, td->rand_seeds[FIO_RAND_START_DELAY]);
 770
 771         if (!td_random(td))
 772                 return;
 773
 774         if (td->o.rand_repeatable)
 775                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 776
 777         init_rand_seed(&td->__random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
 778         init_rand_seed(&td->__seq_rand_state[DDIR_READ], td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF]);
 779         init_rand_seed(&td->__seq_rand_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_SEQ_RAND_WRITE_OFF]);
 780         init_rand_seed(&td->__seq_rand_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_SEQ_RAND_TRIM_OFF]);
 781 }
 782
 783 void td_fill_rand_seeds(struct thread_data *td)
 784 {
 785         if (td->o.allrand_repeatable) {
 786                 for (int i = 0; i < FIO_RAND_NR_OFFS; i++)
 787                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
 788                                 + i;
 789         }
 790
 791         if (td->o.use_os_rand)
 792                 td_fill_rand_seeds_os(td);
 793         else
 794                 td_fill_rand_seeds_internal(td);
 795
 796         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF]);
 797 }
 798
 799 /*
 800  * Initializes the ioengine configured for a job, if it has not been done so
 801  * already.
 802  */
 803 int ioengine_load(struct thread_data *td)
 804 {
 805         const char *engine;
 806
 807         /*
 808          * Engine has already been loaded.
 809          */
 810         if (td->io_ops)
 811                 return 0;
 812         if (!td->o.ioengine) {
 813                 log_err("fio: internal fault, no IO engine specified\n");
 814                 return 1;
 815         }
 816
 817         engine = get_engine_name(td->o.ioengine);
 818         td->io_ops = load_ioengine(td, engine);
 819         if (!td->io_ops) {
 820                 log_err("fio: failed to load engine %s\n", engine);
 821                 return 1;
 822         }
 823
 824         if (td->io_ops->option_struct_size && td->io_ops->options) {
 825                 /*
 826                  * In cases where td->eo is set, clone it for a child thread.
 827                  * This requires that the parent thread has the same ioengine,
 828                  * but that requirement must be enforced by the code which
 829                  * cloned the thread.
 830                  */
 831                 void *origeo = td->eo;
 832                 /*
 833                  * Otherwise use the default thread options.
 834                  */
 835                 if (!origeo && td != &def_thread && def_thread.eo &&
 836                     def_thread.io_ops->options == td->io_ops->options)
 837                         origeo = def_thread.eo;
 838
 839                 options_init(td->io_ops->options);
 840                 td->eo = malloc(td->io_ops->option_struct_size);
 841                 /*
 842                  * Use the default thread as an option template if this uses the
 843                  * same options structure and there are non-default options
 844                  * used.
 845                  */
 846                 if (origeo) {
 847                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 848                         options_mem_dupe(td->eo, td->io_ops->options);
 849                 } else {
 850                         memset(td->eo, 0, td->io_ops->option_struct_size);
 851                         fill_default_options(td->eo, td->io_ops->options);
 852                 }
 853                 *(struct thread_data **)td->eo = td;
 854         }
 855
 856         return 0;
 857 }
 858
 859 static void init_flags(struct thread_data *td)
 860 {
 861         struct thread_options *o = &td->o;
 862
 863         if (o->verify_backlog)
 864                 td->flags |= TD_F_VER_BACKLOG;
 865         if (o->trim_backlog)
 866                 td->flags |= TD_F_TRIM_BACKLOG;
 867         if (o->read_iolog_file)
 868                 td->flags |= TD_F_READ_IOLOG;
 869         if (o->refill_buffers)
 870                 td->flags |= TD_F_REFILL_BUFFERS;
 871         if (o->scramble_buffers)
 872                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
 873         if (o->verify != VERIFY_NONE)
 874                 td->flags |= TD_F_VER_NONE;
 875 }
 876
 877 static int setup_random_seeds(struct thread_data *td)
 878 {
 879         unsigned long seed;
 880         unsigned int i;
 881
 882         if (!td->o.rand_repeatable && !td->o.rand_seed)
 883                 return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
 884
 885         if (!td->o.rand_seed)
 886                 seed = 0x89;
 887         else
 888                 seed = td->o.rand_seed;
 889
 890         for (i = 0; i < 4; i++)
 891                 seed *= 0x9e370001UL;
 892
 893         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
 894                 td->rand_seeds[i] = seed;
 895                 seed *= 0x9e370001UL;
 896         }
 897
 898         td_fill_rand_seeds(td);
 899         return 0;
 900 }
 901
 902 enum {
 903         FPRE_NONE = 0,
 904         FPRE_JOBNAME,
 905         FPRE_JOBNUM,
 906         FPRE_FILENUM
 907 };
 908
 909 static struct fpre_keyword {
 910         const char *keyword;
 911         size_t strlen;
 912         int key;
 913 } fpre_keywords[] = {
 914         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
 915         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
 916         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
 917         { .keyword = NULL, },
 918         };
 919
 920 static char *make_filename(char *buf, struct thread_options *o,
 921                            const char *jobname, int jobnum, int filenum)
 922 {
 923         struct fpre_keyword *f;
 924         char copy[PATH_MAX];
 925
 926         if (!o->filename_format || !strlen(o->filename_format)) {
 927                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
 928                 return NULL;
 929         }
 930
 931         for (f = &fpre_keywords[0]; f->keyword; f++)
 932                 f->strlen = strlen(f->keyword);
 933
 934         strcpy(buf, o->filename_format);
 935         memset(copy, 0, sizeof(copy));
 936         for (f = &fpre_keywords[0]; f->keyword; f++) {
 937                 do {
 938                         size_t pre_len, post_start = 0;
 939                         char *str, *dst = copy;
 940
 941                         str = strcasestr(buf, f->keyword);
 942                         if (!str)
 943                                 break;
 944
 945                         pre_len = str - buf;
 946                         if (strlen(str) != f->strlen)
 947                                 post_start = pre_len + f->strlen;
 948
 949                         if (pre_len) {
 950                                 strncpy(dst, buf, pre_len);
 951                                 dst += pre_len;
 952                         }
 953
 954                         switch (f->key) {
 955                         case FPRE_JOBNAME:
 956                                 dst += sprintf(dst, "%s", jobname);
 957                                 break;
 958                         case FPRE_JOBNUM:
 959                                 dst += sprintf(dst, "%d", jobnum);
 960                                 break;
 961                         case FPRE_FILENUM:
 962                                 dst += sprintf(dst, "%d", filenum);
 963                                 break;
 964                         default:
 965                                 assert(0);
 966                                 break;
 967                         }
 968
 969                         if (post_start)
 970                                 strcpy(dst, buf + post_start);
 971
 972                         strcpy(buf, copy);
 973                 } while (1);
 974         }
 975
 976         return buf;
 977 }
 978
 979 int parse_dryrun(void)
 980 {
 981         return dump_cmdline || parse_only;
 982 }
 983
 984 /*
 985  * Adds a job to the list of things todo. Sanitizes the various options
 986  * to make sure we don't have conflicts, and initializes various
 987  * members of td.
 988  */
 989 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
 990                    int recursed, int client_type)
 991 {
 992         unsigned int i;
 993         char fname[PATH_MAX];
 994         int numjobs, file_alloced;
 995         struct thread_options *o = &td->o;
 996
 997         /*
 998          * the def_thread is just for options, it's not a real job
 999          */
1000         if (td == &def_thread)
1001                 return 0;
1002
1003         init_flags(td);
1004
1005         /*
1006          * if we are just dumping the output command line, don't add the job
1007          */
1008         if (parse_dryrun()) {
1009                 put_job(td);
1010                 return 0;
1011         }
1012
1013         td->client_type = client_type;
1014
1015         if (profile_td_init(td))
1016                 goto err;
1017
1018         if (ioengine_load(td))
1019                 goto err;
1020
1021         if (o->odirect)
1022                 td->io_ops->flags |= FIO_RAWIO;
1023
1024         file_alloced = 0;
1025         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1026                 file_alloced = 1;
1027
1028                 if (o->nr_files == 1 && exists_and_not_file(jobname))
1029                         add_file(td, jobname, job_add_num, 0);
1030                 else {
1031                         for (i = 0; i < o->nr_files; i++)
1032                                 add_file(td, make_filename(fname, o, jobname, job_add_num, i), job_add_num, 0);
1033                 }
1034         }
1035
1036         if (fixup_options(td))
1037                 goto err;
1038
1039         flow_init_job(td);
1040
1041         /*
1042          * IO engines only need this for option callbacks, and the address may
1043          * change in subprocesses.
1044          */
1045         if (td->eo)
1046                 *(struct thread_data **)td->eo = NULL;
1047
1048         if (td->io_ops->flags & FIO_DISKLESSIO) {
1049                 struct fio_file *f;
1050
1051                 for_each_file(td, f, i)
1052                         f->real_file_size = -1ULL;
1053         }
1054
1055         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1056
1057         td->ts.clat_percentiles = o->clat_percentiles;
1058         td->ts.percentile_precision = o->percentile_precision;
1059         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1060
1061         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1062                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1063                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1064                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1065                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1066         }
1067         td->ddir_seq_nr = o->ddir_seq_nr;
1068
1069         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1070                 prev_group_jobs = 0;
1071                 groupid++;
1072         }
1073
1074         td->groupid = groupid;
1075         prev_group_jobs++;
1076
1077         if (setup_random_seeds(td)) {
1078                 td_verror(td, errno, "init_random_state");
1079                 goto err;
1080         }
1081
1082         if (setup_rate(td))
1083                 goto err;
1084
1085         if (o->lat_log_file) {
1086                 setup_log(&td->lat_log, o->log_avg_msec, IO_LOG_TYPE_LAT);
1087                 setup_log(&td->slat_log, o->log_avg_msec, IO_LOG_TYPE_SLAT);
1088                 setup_log(&td->clat_log, o->log_avg_msec, IO_LOG_TYPE_CLAT);
1089         }
1090         if (o->bw_log_file)
1091                 setup_log(&td->bw_log, o->log_avg_msec, IO_LOG_TYPE_BW);
1092         if (o->iops_log_file)
1093                 setup_log(&td->iops_log, o->log_avg_msec, IO_LOG_TYPE_IOPS);
1094
1095         if (!o->name)
1096                 o->name = strdup(jobname);
1097
1098         if (output_format == FIO_OUTPUT_NORMAL) {
1099                 if (!job_add_num) {
1100                         if (is_backend && !recursed)
1101                                 fio_server_send_add_job(td);
1102
1103                         if (!(td->io_ops->flags & FIO_NOIO)) {
1104                                 char *c1, *c2, *c3, *c4;
1105                                 char *c5 = NULL, *c6 = NULL;
1106
1107                                 c1 = fio_uint_to_kmg(o->min_bs[DDIR_READ]);
1108                                 c2 = fio_uint_to_kmg(o->max_bs[DDIR_READ]);
1109                                 c3 = fio_uint_to_kmg(o->min_bs[DDIR_WRITE]);
1110                                 c4 = fio_uint_to_kmg(o->max_bs[DDIR_WRITE]);
1111
1112                                 if (!o->bs_is_seq_rand) {
1113                                         c5 = fio_uint_to_kmg(o->min_bs[DDIR_TRIM]);
1114                                         c6 = fio_uint_to_kmg(o->max_bs[DDIR_TRIM]);
1115                                 }
1116
1117                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1118                                                         td->groupid,
1119                                                         ddir_str(o->td_ddir));
1120
1121                                 if (o->bs_is_seq_rand)
1122                                         log_info("bs(seq/rand)=%s-%s/%s-%s, ",
1123                                                         c1, c2, c3, c4);
1124                                 else
1125                                         log_info("bs=%s-%s/%s-%s/%s-%s, ",
1126                                                         c1, c2, c3, c4, c5, c6);
1127
1128                                 log_info("ioengine=%s, iodepth=%u\n",
1129                                                 td->io_ops->name, o->iodepth);
1130
1131                                 free(c1);
1132                                 free(c2);
1133                                 free(c3);
1134                                 free(c4);
1135                                 free(c5);
1136                                 free(c6);
1137                         }
1138                 } else if (job_add_num == 1)
1139                         log_info("...\n");
1140         }
1141
1142         /*
1143          * recurse add identical jobs, clear numjobs and stonewall options
1144          * as they don't apply to sub-jobs
1145          */
1146         numjobs = o->numjobs;
1147         while (--numjobs) {
1148                 struct thread_data *td_new = get_new_job(0, td, 1);
1149
1150                 if (!td_new)
1151                         goto err;
1152
1153                 td_new->o.numjobs = 1;
1154                 td_new->o.stonewall = 0;
1155                 td_new->o.new_group = 0;
1156
1157                 if (file_alloced) {
1158                         td_new->files_index = 0;
1159                         td_new->files_size = 0;
1160                         if (td_new->files) {
1161                                 struct fio_file *f;
1162                                 for_each_file(td_new, f, i) {
1163                                         if (f->file_name)
1164                                                 free(f->file_name);
1165                                         free(f);
1166                                 }
1167                                 td_new->files = NULL;
1168                         }
1169                         if (td_new->o.filename) {
1170                                 free(td_new->o.filename);
1171                                 td_new->o.filename = NULL;
1172                         }
1173                 }
1174
1175                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1176                         goto err;
1177         }
1178
1179         return 0;
1180 err:
1181         put_job(td);
1182         return -1;
1183 }
1184
1185 /*
1186  * Parse as if 'o' was a command line
1187  */
1188 void add_job_opts(const char **o, int client_type)
1189 {
1190         struct thread_data *td, *td_parent;
1191         int i, in_global = 1;
1192         char jobname[32];
1193
1194         i = 0;
1195         td_parent = td = NULL;
1196         while (o[i]) {
1197                 if (!strncmp(o[i], "name", 4)) {
1198                         in_global = 0;
1199                         if (td)
1200                                 add_job(td, jobname, 0, 0, client_type);
1201                         td = NULL;
1202                         sprintf(jobname, "%s", o[i] + 5);
1203                 }
1204                 if (in_global && !td_parent)
1205                         td_parent = get_new_job(1, &def_thread, 0);
1206                 else if (!in_global && !td) {
1207                         if (!td_parent)
1208                                 td_parent = &def_thread;
1209                         td = get_new_job(0, td_parent, 0);
1210                 }
1211                 if (in_global)
1212                         fio_options_parse(td_parent, (char **) &o[i], 1, 0);
1213                 else
1214                         fio_options_parse(td, (char **) &o[i], 1, 0);
1215                 i++;
1216         }
1217
1218         if (td)
1219                 add_job(td, jobname, 0, 0, client_type);
1220 }
1221
1222 static int skip_this_section(const char *name)
1223 {
1224         int i;
1225
1226         if (!nr_job_sections)
1227                 return 0;
1228         if (!strncmp(name, "global", 6))
1229                 return 0;
1230
1231         for (i = 0; i < nr_job_sections; i++)
1232                 if (!strcmp(job_sections[i], name))
1233                         return 0;
1234
1235         return 1;
1236 }
1237
1238 static int is_empty_or_comment(char *line)
1239 {
1240         unsigned int i;
1241
1242         for (i = 0; i < strlen(line); i++) {
1243                 if (line[i] == ';')
1244                         return 1;
1245                 if (line[i] == '#')
1246                         return 1;
1247                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1248                         return 0;
1249         }
1250
1251         return 1;
1252 }
1253
1254 /*
1255  * This is our [ini] type file parser.
1256  */
1257 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1258 {
1259         unsigned int global;
1260         struct thread_data *td;
1261         char *string, *name;
1262         FILE *f;
1263         char *p;
1264         int ret = 0, stonewall;
1265         int first_sect = 1;
1266         int skip_fgets = 0;
1267         int inside_skip = 0;
1268         char **opts;
1269         int i, alloc_opts, num_opts;
1270
1271         if (is_buf)
1272                 f = NULL;
1273         else {
1274                 if (!strcmp(file, "-"))
1275                         f = stdin;
1276                 else
1277                         f = fopen(file, "r");
1278
1279                 if (!f) {
1280                         perror("fopen job file");
1281                         return 1;
1282                 }
1283         }
1284
1285         string = malloc(4096);
1286
1287         /*
1288          * it's really 256 + small bit, 280 should suffice
1289          */
1290         name = malloc(280);
1291         memset(name, 0, 280);
1292
1293         alloc_opts = 8;
1294         opts = malloc(sizeof(char *) * alloc_opts);
1295         num_opts = 0;
1296
1297         stonewall = stonewall_flag;
1298         do {
1299                 /*
1300                  * if skip_fgets is set, we already have loaded a line we
1301                  * haven't handled.
1302                  */
1303                 if (!skip_fgets) {
1304                         if (is_buf)
1305                                 p = strsep(&file, "\n");
1306                         else
1307                                 p = fgets(string, 4096, f);
1308                         if (!p)
1309                                 break;
1310                 }
1311
1312                 skip_fgets = 0;
1313                 strip_blank_front(&p);
1314                 strip_blank_end(p);
1315
1316                 if (is_empty_or_comment(p))
1317                         continue;
1318                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1319                         if (inside_skip)
1320                                 continue;
1321                         log_err("fio: option <%s> outside of [] job section\n",
1322                                                                         p);
1323                         break;
1324                 }
1325
1326                 name[strlen(name) - 1] = '\0';
1327
1328                 if (skip_this_section(name)) {
1329                         inside_skip = 1;
1330                         continue;
1331                 } else
1332                         inside_skip = 0;
1333
1334                 global = !strncmp(name, "global", 6);
1335
1336                 if (dump_cmdline) {
1337                         if (first_sect)
1338                                 log_info("fio ");
1339                         if (!global)
1340                                 log_info("--name=%s ", name);
1341                         first_sect = 0;
1342                 }
1343
1344                 td = get_new_job(global, &def_thread, 0);
1345                 if (!td) {
1346                         ret = 1;
1347                         break;
1348                 }
1349
1350                 /*
1351                  * Separate multiple job files by a stonewall
1352                  */
1353                 if (!global && stonewall) {
1354                         td->o.stonewall = stonewall;
1355                         stonewall = 0;
1356                 }
1357
1358                 num_opts = 0;
1359                 memset(opts, 0, alloc_opts * sizeof(char *));
1360
1361                 while (1) {
1362                         if (is_buf)
1363                                 p = strsep(&file, "\n");
1364                         else
1365                                 p = fgets(string, 4096, f);
1366                         if (!p)
1367                                 break;
1368
1369                         if (is_empty_or_comment(p))
1370                                 continue;
1371
1372                         strip_blank_front(&p);
1373
1374                         /*
1375                          * new section, break out and make sure we don't
1376                          * fgets() a new line at the top.
1377                          */
1378                         if (p[0] == '[') {
1379                                 skip_fgets = 1;
1380                                 break;
1381                         }
1382
1383                         strip_blank_end(p);
1384
1385                         if (num_opts == alloc_opts) {
1386                                 alloc_opts <<= 1;
1387                                 opts = realloc(opts,
1388                                                 alloc_opts * sizeof(char *));
1389                         }
1390
1391                         opts[num_opts] = strdup(p);
1392                         num_opts++;
1393                 }
1394
1395                 ret = fio_options_parse(td, opts, num_opts, dump_cmdline);
1396                 if (!ret)
1397                         ret = add_job(td, name, 0, 0, type);
1398                 else {
1399                         log_err("fio: job %s dropped\n", name);
1400                         put_job(td);
1401                 }
1402
1403                 for (i = 0; i < num_opts; i++)
1404                         free(opts[i]);
1405                 num_opts = 0;
1406         } while (!ret);
1407
1408         if (dump_cmdline)
1409                 log_info("\n");
1410
1411         i = 0;
1412         while (i < nr_job_sections) {
1413                 free(job_sections[i]);
1414                 i++;
1415         }
1416
1417         for (i = 0; i < num_opts; i++)
1418                 free(opts[i]);
1419
1420         free(string);
1421         free(name);
1422         free(opts);
1423         if (!is_buf && f != stdin)
1424                 fclose(f);
1425         return ret;
1426 }
1427
1428 static int fill_def_thread(void)
1429 {
1430         memset(&def_thread, 0, sizeof(def_thread));
1431
1432         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1433         def_thread.o.timeout = def_timeout;
1434         def_thread.o.error_dump = 1;
1435         /*
1436          * fill default options
1437          */
1438         fio_fill_default_options(&def_thread);
1439         return 0;
1440 }
1441
1442 static void usage(const char *name)
1443 {
1444         printf("%s\n", fio_version_string);
1445         printf("%s [options] [job options] <job file(s)>\n", name);
1446         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1447                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1448                 "\t\t\tdiskutil,job,mutex,profile,time,net,rate\n");
1449         printf("  --parse-only\t\tParse options only, don't start any IO\n");
1450         printf("  --output\t\tWrite output to file\n");
1451         printf("  --runtime\t\tRuntime in seconds\n");
1452         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1453         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1454         printf("  --minimal\t\tMinimal (terse) output\n");
1455         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1456         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1457         printf("  --version\t\tPrint version info and exit\n");
1458         printf("  --help\t\tPrint this page\n");
1459         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
1460         printf("  --crctest\t\tTest speed of checksum functions\n");
1461         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1462                 " them\n");
1463         printf("  --enghelp=engine\tPrint ioengine help, or list"
1464                 " available ioengines\n");
1465         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1466                 " cmd\n");
1467         printf("  --showcmd\t\tTurn a job file into command line options\n");
1468         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1469         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1470         printf("  --eta-newline=time\tForce a new line for every 'time'");
1471         printf(" period passed\n");
1472         printf("  --status-interval=t\tForce full status dump every");
1473         printf(" 't' period passed\n");
1474         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1475                 " writes\n");
1476         printf("  --section=name\tOnly run specified section in job file\n");
1477         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1478                 " (def 1024)\n");
1479         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1480         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1481         printf("  --server=args\t\tStart a backend fio server\n");
1482         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1483         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1484         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
1485                 "\t\t\t(option=system,percpu) or run unit work\n"
1486                 "\t\t\tcalibration only (option=calibrate)\n");
1487         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1488         printf("\n                   Jens Axboe <jaxboe@fusionio.com>");
1489         printf("\n                   Jens Axboe <axboe@fb.com>\n");
1490 }
1491
1492 #ifdef FIO_INC_DEBUG
1493 struct debug_level debug_levels[] = {
1494         { .name = "process",
1495           .help = "Process creation/exit logging",
1496           .shift = FD_PROCESS,
1497         },
1498         { .name = "file",
1499           .help = "File related action logging",
1500           .shift = FD_FILE,
1501         },
1502         { .name = "io",
1503           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1504           .shift = FD_IO,
1505         },
1506         { .name = "mem",
1507           .help = "Memory allocation/freeing logging",
1508           .shift = FD_MEM,
1509         },
1510         { .name = "blktrace",
1511           .help = "blktrace action logging",
1512           .shift = FD_BLKTRACE,
1513         },
1514         { .name = "verify",
1515           .help = "IO verification action logging",
1516           .shift = FD_VERIFY,
1517         },
1518         { .name = "random",
1519           .help = "Random generation logging",
1520           .shift = FD_RANDOM,
1521         },
1522         { .name = "parse",
1523           .help = "Parser logging",
1524           .shift = FD_PARSE,
1525         },
1526         { .name = "diskutil",
1527           .help = "Disk utility logging actions",
1528           .shift = FD_DISKUTIL,
1529         },
1530         { .name = "job",
1531           .help = "Logging related to creating/destroying jobs",
1532           .shift = FD_JOB,
1533         },
1534         { .name = "mutex",
1535           .help = "Mutex logging",
1536           .shift = FD_MUTEX
1537         },
1538         { .name = "profile",
1539           .help = "Logging related to profiles",
1540           .shift = FD_PROFILE,
1541         },
1542         { .name = "time",
1543           .help = "Logging related to time keeping functions",
1544           .shift = FD_TIME,
1545         },
1546         { .name = "net",
1547           .help = "Network logging",
1548           .shift = FD_NET,
1549         },
1550         { .name = "rate",
1551           .help = "Rate logging",
1552           .shift = FD_RATE,
1553         },
1554         { .name = NULL, },
1555 };
1556
1557 static int set_debug(const char *string)
1558 {
1559         struct debug_level *dl;
1560         char *p = (char *) string;
1561         char *opt;
1562         int i;
1563
1564         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1565                 log_info("fio: dumping debug options:");
1566                 for (i = 0; debug_levels[i].name; i++) {
1567                         dl = &debug_levels[i];
1568                         log_info("%s,", dl->name);
1569                 }
1570                 log_info("all\n");
1571                 return 1;
1572         }
1573
1574         while ((opt = strsep(&p, ",")) != NULL) {
1575                 int found = 0;
1576
1577                 if (!strncmp(opt, "all", 3)) {
1578                         log_info("fio: set all debug options\n");
1579                         fio_debug = ~0UL;
1580                         continue;
1581                 }
1582
1583                 for (i = 0; debug_levels[i].name; i++) {
1584                         dl = &debug_levels[i];
1585                         found = !strncmp(opt, dl->name, strlen(dl->name));
1586                         if (!found)
1587                                 continue;
1588
1589                         if (dl->shift == FD_JOB) {
1590                                 opt = strchr(opt, ':');
1591                                 if (!opt) {
1592                                         log_err("fio: missing job number\n");
1593                                         break;
1594                                 }
1595                                 opt++;
1596                                 fio_debug_jobno = atoi(opt);
1597                                 log_info("fio: set debug jobno %d\n",
1598                                                         fio_debug_jobno);
1599                         } else {
1600                                 log_info("fio: set debug option %s\n", opt);
1601                                 fio_debug |= (1UL << dl->shift);
1602                         }
1603                         break;
1604                 }
1605
1606                 if (!found)
1607                         log_err("fio: debug mask %s not found\n", opt);
1608         }
1609         return 0;
1610 }
1611 #else
1612 static int set_debug(const char *string)
1613 {
1614         log_err("fio: debug tracing not included in build\n");
1615         return 1;
1616 }
1617 #endif
1618
1619 static void fio_options_fill_optstring(void)
1620 {
1621         char *ostr = cmd_optstr;
1622         int i, c;
1623
1624         c = i = 0;
1625         while (l_opts[i].name) {
1626                 ostr[c++] = l_opts[i].val;
1627                 if (l_opts[i].has_arg == required_argument)
1628                         ostr[c++] = ':';
1629                 else if (l_opts[i].has_arg == optional_argument) {
1630                         ostr[c++] = ':';
1631                         ostr[c++] = ':';
1632                 }
1633                 i++;
1634         }
1635         ostr[c] = '\0';
1636 }
1637
1638 static int client_flag_set(char c)
1639 {
1640         int i;
1641
1642         i = 0;
1643         while (l_opts[i].name) {
1644                 int val = l_opts[i].val;
1645
1646                 if (c == (val & 0xff))
1647                         return (val & FIO_CLIENT_FLAG);
1648
1649                 i++;
1650         }
1651
1652         return 0;
1653 }
1654
1655 void parse_cmd_client(void *client, char *opt)
1656 {
1657         fio_client_add_cmd_option(client, opt);
1658 }
1659
1660 extern int fio_crctest(const char *);
1661
1662 int parse_cmd_line(int argc, char *argv[], int client_type)
1663 {
1664         struct thread_data *td = NULL;
1665         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1666         char *ostr = cmd_optstr;
1667         void *pid_file = NULL;
1668         void *cur_client = NULL;
1669         int backend = 0;
1670
1671         /*
1672          * Reset optind handling, since we may call this multiple times
1673          * for the backend.
1674          */
1675         optind = 1;
1676
1677         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1678                 did_arg = 1;
1679
1680                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1681                         parse_cmd_client(cur_client, argv[optind - 1]);
1682                         c &= ~FIO_CLIENT_FLAG;
1683                 }
1684
1685                 switch (c) {
1686                 case 'a':
1687                         smalloc_pool_size = atoi(optarg);
1688                         break;
1689                 case 't':
1690                         def_timeout = atoi(optarg);
1691                         break;
1692                 case 'l':
1693                         write_lat_log = 1;
1694                         break;
1695                 case 'b':
1696                         write_bw_log = 1;
1697                         break;
1698                 case 'o':
1699                         f_out = fopen(optarg, "w+");
1700                         if (!f_out) {
1701                                 perror("fopen output");
1702                                 exit(1);
1703                         }
1704                         f_err = f_out;
1705                         break;
1706                 case 'm':
1707                         output_format = FIO_OUTPUT_TERSE;
1708                         break;
1709                 case 'F':
1710                         if (!optarg) {
1711                                 log_err("fio: missing --output-format argument\n");
1712                                 exit_val = 1;
1713                                 do_exit++;
1714                                 break;
1715                         }
1716                         if (!strcmp(optarg, "minimal") ||
1717                             !strcmp(optarg, "terse") ||
1718                             !strcmp(optarg, "csv"))
1719                                 output_format = FIO_OUTPUT_TERSE;
1720                         else if (!strcmp(optarg, "json"))
1721                                 output_format = FIO_OUTPUT_JSON;
1722                         else
1723                                 output_format = FIO_OUTPUT_NORMAL;
1724                         break;
1725                 case 'f':
1726                         append_terse_output = 1;
1727                         break;
1728                 case 'h':
1729                         if (!cur_client) {
1730                                 usage(argv[0]);
1731                                 do_exit++;
1732                         }
1733                         break;
1734                 case 'c':
1735                         if (!cur_client) {
1736                                 fio_show_option_help(optarg);
1737                                 do_exit++;
1738                         }
1739                         break;
1740                 case 'i':
1741                         if (!cur_client) {
1742                                 fio_show_ioengine_help(optarg);
1743                                 do_exit++;
1744                         }
1745                         break;
1746                 case 's':
1747                         dump_cmdline = 1;
1748                         break;
1749                 case 'r':
1750                         read_only = 1;
1751                         break;
1752                 case 'v':
1753                         if (!cur_client) {
1754                                 log_info("%s\n", fio_version_string);
1755                                 do_exit++;
1756                         }
1757                         break;
1758                 case 'V':
1759                         terse_version = atoi(optarg);
1760                         if (!(terse_version == 2 || terse_version == 3 ||
1761                              terse_version == 4)) {
1762                                 log_err("fio: bad terse version format\n");
1763                                 exit_val = 1;
1764                                 do_exit++;
1765                         }
1766                         break;
1767                 case 'e':
1768                         if (!strcmp("always", optarg))
1769                                 eta_print = FIO_ETA_ALWAYS;
1770                         else if (!strcmp("never", optarg))
1771                                 eta_print = FIO_ETA_NEVER;
1772                         break;
1773                 case 'E': {
1774                         long long t = 0;
1775
1776                         if (str_to_decimal(optarg, &t, 0, NULL, 1)) {
1777                                 log_err("fio: failed parsing eta time %s\n", optarg);
1778                                 exit_val = 1;
1779                                 do_exit++;
1780                         }
1781                         eta_new_line = t;
1782                         break;
1783                         }
1784                 case 'd':
1785                         if (set_debug(optarg))
1786                                 do_exit++;
1787                         break;
1788                 case 'P':
1789                         parse_only = 1;
1790                         break;
1791                 case 'x': {
1792                         size_t new_size;
1793
1794                         if (!strcmp(optarg, "global")) {
1795                                 log_err("fio: can't use global as only "
1796                                         "section\n");
1797                                 do_exit++;
1798                                 exit_val = 1;
1799                                 break;
1800                         }
1801                         new_size = (nr_job_sections + 1) * sizeof(char *);
1802                         job_sections = realloc(job_sections, new_size);
1803                         job_sections[nr_job_sections] = strdup(optarg);
1804                         nr_job_sections++;
1805                         break;
1806                         }
1807                 case 'p':
1808                         exec_profile = strdup(optarg);
1809                         break;
1810                 case FIO_GETOPT_JOB: {
1811                         const char *opt = l_opts[lidx].name;
1812                         char *val = optarg;
1813
1814                         if (!strncmp(opt, "name", 4) && td) {
1815                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1816                                 if (ret)
1817                                         return 0;
1818                                 td = NULL;
1819                         }
1820                         if (!td) {
1821                                 int is_section = !strncmp(opt, "name", 4);
1822                                 int global = 0;
1823
1824                                 if (!is_section || !strncmp(val, "global", 6))
1825                                         global = 1;
1826
1827                                 if (is_section && skip_this_section(val))
1828                                         continue;
1829
1830                                 td = get_new_job(global, &def_thread, 1);
1831                                 if (!td || ioengine_load(td))
1832                                         return 0;
1833                                 fio_options_set_ioengine_opts(l_opts, td);
1834                         }
1835
1836                         if ((!val || !strlen(val)) &&
1837                             l_opts[lidx].has_arg == required_argument) {
1838                                 log_err("fio: option %s requires an argument\n", opt);
1839                                 ret = 1;
1840                         } else
1841                                 ret = fio_cmd_option_parse(td, opt, val);
1842
1843                         if (ret) {
1844                                 if (td) {
1845                                         put_job(td);
1846                                         td = NULL;
1847                                 }
1848                                 do_exit++;
1849                         }
1850
1851                         if (!ret && !strcmp(opt, "ioengine")) {
1852                                 free_ioengine(td);
1853                                 if (ioengine_load(td))
1854                                         return 0;
1855                                 fio_options_set_ioengine_opts(l_opts, td);
1856                         }
1857                         break;
1858                 }
1859                 case FIO_GETOPT_IOENGINE: {
1860                         const char *opt = l_opts[lidx].name;
1861                         char *val = optarg;
1862                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1863                         break;
1864                 }
1865                 case 'w':
1866                         warnings_fatal = 1;
1867                         break;
1868                 case 'j':
1869                         max_jobs = atoi(optarg);
1870                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1871                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1872                                 do_exit++;
1873                                 exit_val = 1;
1874                         }
1875                         break;
1876                 case 'S':
1877                         if (nr_clients) {
1878                                 log_err("fio: can't be both client and server\n");
1879                                 do_exit++;
1880                                 exit_val = 1;
1881                                 break;
1882                         }
1883                         if (optarg)
1884                                 fio_server_set_arg(optarg);
1885                         is_backend = 1;
1886                         backend = 1;
1887                         break;
1888                 case 'D':
1889                         pid_file = strdup(optarg);
1890                         break;
1891                 case 'I':
1892                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
1893                                 /* exit on error and calibration only */
1894                                 do_exit++;
1895                                 if (ret == -1)
1896                                         exit_val = 1;
1897                         }
1898                         break;
1899                 case 'C':
1900                         if (is_backend) {
1901                                 log_err("fio: can't be both client and server\n");
1902                                 do_exit++;
1903                                 exit_val = 1;
1904                                 break;
1905                         }
1906                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
1907                                 log_err("fio: failed adding client %s\n", optarg);
1908                                 do_exit++;
1909                                 exit_val = 1;
1910                                 break;
1911                         }
1912                         /*
1913                          * If the next argument exists and isn't an option,
1914                          * assume it's a job file for this client only.
1915                          */
1916                         while (optind < argc) {
1917                                 if (!strncmp(argv[optind], "--", 2) ||
1918                                     !strncmp(argv[optind], "-", 1))
1919                                         break;
1920
1921                                 fio_client_add_ini_file(cur_client, argv[optind]);
1922                                 optind++;
1923                         }
1924                         break;
1925                 case 'T':
1926                         do_exit++;
1927                         exit_val = fio_monotonic_clocktest();
1928                         break;
1929                 case 'G':
1930                         do_exit++;
1931                         exit_val = fio_crctest(optarg);
1932                         break;
1933                 case 'L': {
1934                         long long val;
1935
1936                         if (check_str_time(optarg, &val, 1)) {
1937                                 log_err("fio: failed parsing time %s\n", optarg);
1938                                 do_exit++;
1939                                 exit_val = 1;
1940                                 break;
1941                         }
1942                         status_interval = val * 1000;
1943                         break;
1944                         }
1945                 case '?':
1946                         log_err("%s: unrecognized option '%s'\n", argv[0],
1947                                                         argv[optind - 1]);
1948                 default:
1949                         do_exit++;
1950                         exit_val = 1;
1951                         break;
1952                 }
1953                 if (do_exit)
1954                         break;
1955         }
1956
1957         if (do_exit && !(is_backend || nr_clients))
1958                 exit(exit_val);
1959
1960         if (nr_clients && fio_clients_connect()) {
1961                 do_exit++;
1962                 exit_val = 1;
1963                 return -1;
1964         }
1965
1966         if (is_backend && backend)
1967                 return fio_start_server(pid_file);
1968
1969         if (td) {
1970                 if (!ret)
1971                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1972         }
1973
1974         while (!ret && optind < argc) {
1975                 ini_idx++;
1976                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1977                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1978                 optind++;
1979         }
1980
1981         return ini_idx;
1982 }
1983
1984 int fio_init_options(void)
1985 {
1986         f_out = stdout;
1987         f_err = stderr;
1988
1989         fio_options_fill_optstring();
1990         fio_options_dup_and_init(l_opts);
1991
1992         atexit(free_shm);
1993
1994         if (fill_def_thread())
1995                 return 1;
1996
1997         return 0;
1998 }
1999
2000 extern int fio_check_options(struct thread_options *);
2001
2002 int parse_options(int argc, char *argv[])
2003 {
2004         const int type = FIO_CLIENT_TYPE_CLI;
2005         int job_files, i;
2006
2007         if (fio_init_options())
2008                 return 1;
2009         if (fio_test_cconv(&def_thread.o))
2010                 log_err("fio: failed internal cconv test\n");
2011
2012         job_files = parse_cmd_line(argc, argv, type);
2013
2014         if (job_files > 0) {
2015                 for (i = 0; i < job_files; i++) {
2016                         if (fill_def_thread())
2017                                 return 1;
2018                         if (nr_clients) {
2019                                 if (fio_clients_send_ini(ini_file[i]))
2020                                         return 1;
2021                                 free(ini_file[i]);
2022                         } else if (!is_backend) {
2023                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2024                                         return 1;
2025                                 free(ini_file[i]);
2026                         }
2027                 }
2028         } else if (nr_clients) {
2029                 if (fill_def_thread())
2030                         return 1;
2031                 if (fio_clients_send_ini(NULL))
2032                         return 1;
2033         }
2034
2035         free(ini_file);
2036         fio_options_free(&def_thread);
2037         filesetup_mem_free();
2038
2039         if (!thread_number) {
2040                 if (parse_dryrun())
2041                         return 0;
2042                 if (exec_profile)
2043                         return 0;
2044                 if (is_backend || nr_clients)
2045                         return 0;
2046                 if (did_arg)
2047                         return 0;
2048
2049                 log_err("No jobs(s) defined\n\n");
2050
2051                 if (!did_arg) {
2052                         usage(argv[0]);
2053                         return 1;
2054                 }
2055
2056                 return 0;
2057         }
2058
2059         if (def_thread.o.gtod_offload) {
2060                 fio_gtod_init();
2061                 fio_gtod_offload = 1;
2062                 fio_gtod_cpu = def_thread.o.gtod_cpu;
2063         }
2064
2065         if (output_format == FIO_OUTPUT_NORMAL)
2066                 log_info("%s\n", fio_version_string);
2067
2068         return 0;
2069 }
2070
2071 void options_default_fill(struct thread_options *o)
2072 {
2073         memcpy(o, &def_thread.o, sizeof(*o));
2074 }