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 <getopt.h>
  12 #include <sys/ipc.h>
  13 #include <sys/shm.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16
  17 #include "fio.h"
  18 #include "parse.h"
  19 #include "smalloc.h"
  20 #include "filehash.h"
  21 #include "verify.h"
  22
  23 static char fio_version_string[] = "fio 1.36-rc2";
  24
  25 #define FIO_RANDSEED            (0xb1899bedUL)
  26
  27 static char **ini_file;
  28 static int max_jobs = MAX_JOBS;
  29 static int dump_cmdline;
  30
  31 static struct thread_data def_thread;
  32 struct thread_data *threads = NULL;
  33
  34 int exitall_on_terminate = 0;
  35 int terse_output = 0;
  36 int eta_print;
  37 unsigned long long mlock_size = 0;
  38 FILE *f_out = NULL;
  39 FILE *f_err = NULL;
  40 char *job_section = NULL;
  41
  42 int write_bw_log = 0;
  43 int read_only = 0;
  44
  45 static int def_timeout;
  46 static int write_lat_log;
  47
  48 static int prev_group_jobs;
  49
  50 unsigned long fio_debug = 0;
  51 unsigned int fio_debug_jobno = -1;
  52 unsigned int *fio_debug_jobp = NULL;
  53
  54 /*
  55  * Command line options. These will contain the above, plus a few
  56  * extra that only pertain to fio itself and not jobs.
  57  */
  58 static struct option l_opts[FIO_NR_OPTIONS] = {
  59         {
  60                 .name           = "output",
  61                 .has_arg        = required_argument,
  62                 .val            = 'o',
  63         },
  64         {
  65                 .name           = "timeout",
  66                 .has_arg        = required_argument,
  67                 .val            = 't',
  68         },
  69         {
  70                 .name           = "latency-log",
  71                 .has_arg        = required_argument,
  72                 .val            = 'l',
  73         },
  74         {
  75                 .name           = "bandwidth-log",
  76                 .has_arg        = required_argument,
  77                 .val            = 'b',
  78         },
  79         {
  80                 .name           = "minimal",
  81                 .has_arg        = optional_argument,
  82                 .val            = 'm',
  83         },
  84         {
  85                 .name           = "version",
  86                 .has_arg        = no_argument,
  87                 .val            = 'v',
  88         },
  89         {
  90                 .name           = "help",
  91                 .has_arg        = no_argument,
  92                 .val            = 'h',
  93         },
  94         {
  95                 .name           = "cmdhelp",
  96                 .has_arg        = optional_argument,
  97                 .val            = 'c',
  98         },
  99         {
 100                 .name           = "showcmd",
 101                 .has_arg        = no_argument,
 102                 .val            = 's',
 103         },
 104         {
 105                 .name           = "readonly",
 106                 .has_arg        = no_argument,
 107                 .val            = 'r',
 108         },
 109         {
 110                 .name           = "eta",
 111                 .has_arg        = required_argument,
 112                 .val            = 'e',
 113         },
 114         {
 115                 .name           = "debug",
 116                 .has_arg        = required_argument,
 117                 .val            = 'd',
 118         },
 119         {
 120                 .name           = "section",
 121                 .has_arg        = required_argument,
 122                 .val            = 'x',
 123         },
 124         {
 125                 .name           = "alloc-size",
 126                 .has_arg        = required_argument,
 127                 .val            = 'a',
 128         },
 129         {
 130                 .name           = "profile",
 131                 .has_arg        = required_argument,
 132                 .val            = 'p',
 133         },
 134         {
 135                 .name           = NULL,
 136         },
 137 };
 138
 139 static const char *tiobench_opts[] = {
 140         "buffered=0", "size=4*1024*$mb_memory", "bs=4k", "timeout=600",
 141         "numjobs=4", "group_reporting", "thread", "overwrite=1",
 142         "filename=.fio.tio.1:.fio.tio.2:.fio.tio.3:.fio.tio.4",
 143         "name=seqwrite", "rw=write", "end_fsync=1",
 144         "name=randwrite", "stonewall", "rw=randwrite", "end_fsync=1",
 145         "name=seqread", "stonewall", "rw=read",
 146         "name=randread", "stonewall", "rw=randread", NULL,
 147 };
 148
 149 static const char **fio_prof_strings[PROFILE_END] = {
 150         NULL,
 151         tiobench_opts,
 152 };
 153
 154 static const char *profiles[PROFILE_END] = {
 155         "none",
 156         "tiobench",
 157 };
 158
 159 FILE *get_f_out()
 160 {
 161         return f_out;
 162 }
 163
 164 FILE *get_f_err()
 165 {
 166         return f_err;
 167 }
 168
 169 /*
 170  * Return a free job structure.
 171  */
 172 static struct thread_data *get_new_job(int global, struct thread_data *parent)
 173 {
 174         struct thread_data *td;
 175
 176         if (global)
 177                 return &def_thread;
 178         if (thread_number >= max_jobs)
 179                 return NULL;
 180
 181         td = &threads[thread_number++];
 182         *td = *parent;
 183
 184         td->o.uid = td->o.gid = -1U;
 185
 186         dup_files(td, parent);
 187         options_mem_dupe(td);
 188
 189         td->thread_number = thread_number;
 190         return td;
 191 }
 192
 193 static void put_job(struct thread_data *td)
 194 {
 195         if (td == &def_thread)
 196                 return;
 197
 198         if (td->error)
 199                 log_info("fio: %s\n", td->verror);
 200
 201         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 202         thread_number--;
 203 }
 204
 205 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 206 {
 207         unsigned int bs = td->o.min_bs[ddir];
 208         unsigned long long rate;
 209         unsigned long ios_per_msec;
 210
 211         if (td->o.rate[ddir]) {
 212                 rate = td->o.rate[ddir];
 213                 ios_per_msec = (rate * 1000LL) / bs;
 214         } else
 215                 ios_per_msec = td->o.rate_iops[ddir] * 1000UL;
 216
 217         if (!ios_per_msec) {
 218                 log_err("rate lower than supported\n");
 219                 return -1;
 220         }
 221
 222         td->rate_usec_cycle[ddir] = 1000000000ULL / ios_per_msec;
 223         td->rate_pending_usleep[ddir] = 0;
 224         return 0;
 225 }
 226
 227 static int setup_rate(struct thread_data *td)
 228 {
 229         int ret = 0;
 230
 231         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 232                 ret = __setup_rate(td, DDIR_READ);
 233         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 234                 ret |= __setup_rate(td, DDIR_WRITE);
 235
 236         return ret;
 237 }
 238
 239 static int fixed_block_size(struct thread_options *o)
 240 {
 241         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 242                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 243                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 244 }
 245
 246 /*
 247  * Lazy way of fixing up options that depend on each other. We could also
 248  * define option callback handlers, but this is easier.
 249  */
 250 static int fixup_options(struct thread_data *td)
 251 {
 252         struct thread_options *o = &td->o;
 253
 254 #ifndef FIO_HAVE_PSHARED_MUTEX
 255         if (!td->o.use_thread) {
 256                 log_info("fio: this platform does not support process shared"
 257                          " mutexes, forcing use of threads. Use the 'thread'"
 258                          " option to get rid of this warning.\n");
 259                 td->o.use_thread = 1;
 260         }
 261 #endif
 262
 263         if (o->write_iolog_file && o->read_iolog_file) {
 264                 log_err("fio: read iolog overrides write_iolog\n");
 265                 free(o->write_iolog_file);
 266                 o->write_iolog_file = NULL;
 267         }
 268
 269         /*
 270          * only really works for sequential io for now, and with 1 file
 271          */
 272         if (o->zone_size && td_random(td) && o->open_files == 1)
 273                 o->zone_size = 0;
 274
 275         /*
 276          * Reads can do overwrites, we always need to pre-create the file
 277          */
 278         if (td_read(td) || td_rw(td))
 279                 o->overwrite = 1;
 280
 281         if (!o->min_bs[DDIR_READ])
 282                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 283         if (!o->max_bs[DDIR_READ])
 284                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 285         if (!o->min_bs[DDIR_WRITE])
 286                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 287         if (!o->max_bs[DDIR_WRITE])
 288                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 289
 290         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 291
 292         /*
 293          * For random IO, allow blockalign offset other than min_bs.
 294          */
 295         if (!o->ba[DDIR_READ] || !td_random(td))
 296                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 297         if (!o->ba[DDIR_WRITE] || !td_random(td))
 298                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 299
 300         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 301             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
 302             !td->o.norandommap) {
 303                 log_err("fio: Any use of blockalign= turns off randommap\n");
 304                 td->o.norandommap = 1;
 305         }
 306
 307         if (!o->file_size_high)
 308                 o->file_size_high = o->file_size_low;
 309
 310         if (o->norandommap && o->verify != VERIFY_NONE
 311             && !fixed_block_size(o))  {
 312                 log_err("fio: norandommap given for variable block sizes, "
 313                         "verify disabled\n");
 314                 o->verify = VERIFY_NONE;
 315         }
 316         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 317                 log_err("fio: bs_unaligned may not work with raw io\n");
 318
 319         /*
 320          * thinktime_spin must be less than thinktime
 321          */
 322         if (o->thinktime_spin > o->thinktime)
 323                 o->thinktime_spin = o->thinktime;
 324
 325         /*
 326          * The low water mark cannot be bigger than the iodepth
 327          */
 328         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 329                 /*
 330                  * syslet work around - if the workload is sequential,
 331                  * we want to let the queue drain all the way down to
 332                  * avoid seeking between async threads
 333                  */
 334                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 335                         o->iodepth_low = 1;
 336                 else
 337                         o->iodepth_low = o->iodepth;
 338         }
 339
 340         /*
 341          * If batch number isn't set, default to the same as iodepth
 342          */
 343         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 344                 o->iodepth_batch = o->iodepth;
 345
 346         if (o->nr_files > td->files_index)
 347                 o->nr_files = td->files_index;
 348
 349         if (o->open_files > o->nr_files || !o->open_files)
 350                 o->open_files = o->nr_files;
 351
 352         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
 353             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
 354                 o->rate_iops_min[1]))) {
 355                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 356                 return 1;
 357         }
 358         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
 359             (o->rate_iops[0] < o->rate_iops_min[0]) ||
 360             (o->rate_iops[1] < o->rate_iops_min[1])) {
 361                 log_err("fio: minimum rate exceeds rate\n");
 362                 return 1;
 363         }
 364
 365         if (!o->timeout && o->time_based) {
 366                 log_err("fio: time_based requires a runtime/timeout setting\n");
 367                 o->time_based = 0;
 368         }
 369
 370         if (o->fill_device && !o->size)
 371                 o->size = -1ULL;
 372
 373         if (td_rw(td) && td->o.verify != VERIFY_NONE)
 374                 log_info("fio: mixed read/write workload with verify. May not "
 375                  "work as expected, unless you pre-populated the file\n");
 376
 377         if (td->o.verify != VERIFY_NONE)
 378                 td->o.refill_buffers = 1;
 379
 380         if (td->o.pre_read) {
 381                 td->o.invalidate_cache = 0;
 382                 if (td->io_ops->flags & FIO_PIPEIO)
 383                         log_info("fio: cannot pre-read files with an IO engine"
 384                                  " that isn't seekable. Pre-read disabled.\n");
 385         }
 386
 387         return 0;
 388 }
 389
 390 /*
 391  * This function leaks the buffer
 392  */
 393 static char *to_kmg(unsigned int val)
 394 {
 395         char *buf = malloc(32);
 396         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 397         char *p = post;
 398
 399         do {
 400                 if (val & 1023)
 401                         break;
 402
 403                 val >>= 10;
 404                 p++;
 405         } while (*p);
 406
 407         snprintf(buf, 31, "%u%c", val, *p);
 408         return buf;
 409 }
 410
 411 /* External engines are specified by "external:name.o") */
 412 static const char *get_engine_name(const char *str)
 413 {
 414         char *p = strstr(str, ":");
 415
 416         if (!p)
 417                 return str;
 418
 419         p++;
 420         strip_blank_front(&p);
 421         strip_blank_end(p);
 422         return p;
 423 }
 424
 425 static int exists_and_not_file(const char *filename)
 426 {
 427         struct stat sb;
 428
 429         if (lstat(filename, &sb) == -1)
 430                 return 0;
 431
 432         if (S_ISREG(sb.st_mode))
 433                 return 0;
 434
 435         return 1;
 436 }
 437
 438 void td_fill_rand_seeds(struct thread_data *td)
 439 {
 440         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 441         os_random_seed(td->rand_seeds[1], &td->verify_state);
 442         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 443
 444         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 445                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 446
 447         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 448
 449         if (!td_random(td))
 450                 return;
 451
 452         if (td->o.rand_repeatable)
 453                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 454
 455         os_random_seed(td->rand_seeds[4], &td->random_state);
 456 }
 457
 458 /*
 459  * Initialize the various random states we need (random io, block size ranges,
 460  * read/write mix, etc).
 461  */
 462 static int init_random_state(struct thread_data *td)
 463 {
 464         int fd;
 465
 466         fd = open("/dev/urandom", O_RDONLY);
 467         if (fd == -1) {
 468                 td_verror(td, errno, "open");
 469                 return 1;
 470         }
 471
 472         if (read(fd, td->rand_seeds, sizeof(td->rand_seeds)) <
 473             (int) sizeof(td->rand_seeds)) {
 474                 td_verror(td, EIO, "read");
 475                 close(fd);
 476                 return 1;
 477         }
 478
 479         close(fd);
 480         td_fill_rand_seeds(td);
 481         return 0;
 482 }
 483
 484 /*
 485  * Adds a job to the list of things todo. Sanitizes the various options
 486  * to make sure we don't have conflicts, and initializes various
 487  * members of td.
 488  */
 489 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 490 {
 491         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 492                                    "randread", "randwrite", "randrw" };
 493         unsigned int i;
 494         const char *engine;
 495         char fname[PATH_MAX];
 496         int numjobs, file_alloced;
 497
 498         /*
 499          * the def_thread is just for options, it's not a real job
 500          */
 501         if (td == &def_thread)
 502                 return 0;
 503
 504         /*
 505          * if we are just dumping the output command line, don't add the job
 506          */
 507         if (dump_cmdline) {
 508                 put_job(td);
 509                 return 0;
 510         }
 511
 512         engine = get_engine_name(td->o.ioengine);
 513         td->io_ops = load_ioengine(td, engine);
 514         if (!td->io_ops) {
 515                 log_err("fio: failed to load engine %s\n", engine);
 516                 goto err;
 517         }
 518
 519         if (td->o.use_thread)
 520                 nr_thread++;
 521         else
 522                 nr_process++;
 523
 524         if (td->o.odirect)
 525                 td->io_ops->flags |= FIO_RAWIO;
 526
 527         file_alloced = 0;
 528         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 529                 file_alloced = 1;
 530
 531                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 532                         add_file(td, jobname);
 533                 else {
 534                         for (i = 0; i < td->o.nr_files; i++) {
 535                                 sprintf(fname, "%s.%d.%d", jobname,
 536                                                         td->thread_number, i);
 537                                 add_file(td, fname);
 538                         }
 539                 }
 540         }
 541
 542         if (fixup_options(td))
 543                 goto err;
 544
 545         if (td->io_ops->flags & FIO_DISKLESSIO) {
 546                 struct fio_file *f;
 547
 548                 for_each_file(td, f, i)
 549                         f->real_file_size = -1ULL;
 550         }
 551
 552         td->mutex = fio_mutex_init(0);
 553
 554         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 555         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 556         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 557         td->ddir_nr = td->o.ddir_nr;
 558
 559         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 560                 prev_group_jobs = 0;
 561                 groupid++;
 562         }
 563
 564         td->groupid = groupid;
 565         prev_group_jobs++;
 566
 567         if (init_random_state(td))
 568                 goto err;
 569
 570         if (setup_rate(td))
 571                 goto err;
 572
 573         if (td->o.write_lat_log) {
 574                 setup_log(&td->ts.slat_log);
 575                 setup_log(&td->ts.clat_log);
 576         }
 577         if (td->o.write_bw_log)
 578                 setup_log(&td->ts.bw_log);
 579
 580         if (!td->o.name)
 581                 td->o.name = strdup(jobname);
 582
 583         if (!terse_output) {
 584                 if (!job_add_num) {
 585                         if (!strcmp(td->io_ops->name, "cpuio")) {
 586                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 587                                          " cpucycle=%u\n", td->o.name,
 588                                                         td->o.cpuload,
 589                                                         td->o.cpucycle);
 590                         } else {
 591                                 char *c1, *c2, *c3, *c4;
 592
 593                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 594                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 595                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 596                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 597
 598                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 599                                          " ioengine=%s, iodepth=%u\n",
 600                                                 td->o.name, td->groupid,
 601                                                 ddir_str[td->o.td_ddir],
 602                                                 c1, c2, c3, c4,
 603                                                 td->io_ops->name,
 604                                                 td->o.iodepth);
 605
 606                                 free(c1);
 607                                 free(c2);
 608                                 free(c3);
 609                                 free(c4);
 610                         }
 611                 } else if (job_add_num == 1)
 612                         log_info("...\n");
 613         }
 614
 615         /*
 616          * recurse add identical jobs, clear numjobs and stonewall options
 617          * as they don't apply to sub-jobs
 618          */
 619         numjobs = td->o.numjobs;
 620         while (--numjobs) {
 621                 struct thread_data *td_new = get_new_job(0, td);
 622
 623                 if (!td_new)
 624                         goto err;
 625
 626                 td_new->o.numjobs = 1;
 627                 td_new->o.stonewall = 0;
 628                 td_new->o.new_group = 0;
 629
 630                 if (file_alloced) {
 631                         td_new->o.filename = NULL;
 632                         td_new->files_index = 0;
 633                         td_new->files_size = 0;
 634                         td_new->files = NULL;
 635                 }
 636
 637                 job_add_num = numjobs - 1;
 638
 639                 if (add_job(td_new, jobname, job_add_num))
 640                         goto err;
 641         }
 642
 643         return 0;
 644 err:
 645         put_job(td);
 646         return -1;
 647 }
 648
 649 static int skip_this_section(const char *name)
 650 {
 651         if (!job_section)
 652                 return 0;
 653         if (!strncmp(name, "global", 6))
 654                 return 0;
 655
 656         return strcmp(job_section, name);
 657 }
 658
 659 static int is_empty_or_comment(char *line)
 660 {
 661         unsigned int i;
 662
 663         for (i = 0; i < strlen(line); i++) {
 664                 if (line[i] == ';')
 665                         return 1;
 666                 if (line[i] == '#')
 667                         return 1;
 668                 if (!isspace(line[i]) && !iscntrl(line[i]))
 669                         return 0;
 670         }
 671
 672         return 1;
 673 }
 674
 675 /*
 676  * This is our [ini] type file parser.
 677  */
 678 static int parse_jobs_ini(char *file, int stonewall_flag)
 679 {
 680         unsigned int global;
 681         struct thread_data *td;
 682         char *string, *name;
 683         FILE *f;
 684         char *p;
 685         int ret = 0, stonewall;
 686         int first_sect = 1;
 687         int skip_fgets = 0;
 688         int inside_skip = 0;
 689         char **opts;
 690         int i, alloc_opts, num_opts;
 691
 692         if (!strcmp(file, "-"))
 693                 f = stdin;
 694         else
 695                 f = fopen(file, "r");
 696
 697         if (!f) {
 698                 perror("fopen job file");
 699                 return 1;
 700         }
 701
 702         string = malloc(4096);
 703
 704         /*
 705          * it's really 256 + small bit, 280 should suffice
 706          */
 707         name = malloc(280);
 708         memset(name, 0, 280);
 709
 710         alloc_opts = 8;
 711         opts = malloc(sizeof(char *) * alloc_opts);
 712         num_opts = 0;
 713
 714         stonewall = stonewall_flag;
 715         do {
 716                 /*
 717                  * if skip_fgets is set, we already have loaded a line we
 718                  * haven't handled.
 719                  */
 720                 if (!skip_fgets) {
 721                         p = fgets(string, 4095, f);
 722                         if (!p)
 723                                 break;
 724                 }
 725
 726                 skip_fgets = 0;
 727                 strip_blank_front(&p);
 728                 strip_blank_end(p);
 729
 730                 if (is_empty_or_comment(p))
 731                         continue;
 732                 if (sscanf(p, "[%255s]", name) != 1) {
 733                         if (inside_skip)
 734                                 continue;
 735                         log_err("fio: option <%s> outside of [] job section\n",
 736                                                                         p);
 737                         break;
 738                 }
 739
 740                 if (skip_this_section(name)) {
 741                         inside_skip = 1;
 742                         continue;
 743                 } else
 744                         inside_skip = 0;
 745
 746                 global = !strncmp(name, "global", 6);
 747
 748                 name[strlen(name) - 1] = '\0';
 749
 750                 if (dump_cmdline) {
 751                         if (first_sect)
 752                                 log_info("fio ");
 753                         if (!global)
 754                                 log_info("--name=%s ", name);
 755                         first_sect = 0;
 756                 }
 757
 758                 td = get_new_job(global, &def_thread);
 759                 if (!td) {
 760                         ret = 1;
 761                         break;
 762                 }
 763
 764                 /*
 765                  * Seperate multiple job files by a stonewall
 766                  */
 767                 if (!global && stonewall) {
 768                         td->o.stonewall = stonewall;
 769                         stonewall = 0;
 770                 }
 771
 772                 num_opts = 0;
 773                 memset(opts, 0, alloc_opts * sizeof(char *));
 774
 775                 while ((p = fgets(string, 4096, f)) != NULL) {
 776                         if (is_empty_or_comment(p))
 777                                 continue;
 778
 779                         strip_blank_front(&p);
 780
 781                         /*
 782                          * new section, break out and make sure we don't
 783                          * fgets() a new line at the top.
 784                          */
 785                         if (p[0] == '[') {
 786                                 skip_fgets = 1;
 787                                 break;
 788                         }
 789
 790                         strip_blank_end(p);
 791
 792                         if (num_opts == alloc_opts) {
 793                                 alloc_opts <<= 1;
 794                                 opts = realloc(opts,
 795                                                 alloc_opts * sizeof(char *));
 796                         }
 797
 798                         opts[num_opts] = strdup(p);
 799                         num_opts++;
 800                 }
 801
 802                 ret = fio_options_parse(td, opts, num_opts);
 803                 if (!ret) {
 804                         if (dump_cmdline)
 805                                 for (i = 0; i < num_opts; i++)
 806                                         log_info("--%s ", opts[i]);
 807
 808                         ret = add_job(td, name, 0);
 809                 } else {
 810                         log_err("fio: job %s dropped\n", name);
 811                         put_job(td);
 812                 }
 813
 814                 for (i = 0; i < num_opts; i++)
 815                         free(opts[i]);
 816                 num_opts = 0;
 817         } while (!ret);
 818
 819         if (dump_cmdline)
 820                 log_info("\n");
 821
 822         for (i = 0; i < num_opts; i++)
 823                 free(opts[i]);
 824
 825         free(string);
 826         free(name);
 827         free(opts);
 828         if (f != stdin)
 829                 fclose(f);
 830         return ret;
 831 }
 832
 833 static int fill_def_thread(void)
 834 {
 835         memset(&def_thread, 0, sizeof(def_thread));
 836
 837         fio_getaffinity(getpid(), &def_thread.o.cpumask);
 838
 839         /*
 840          * fill default options
 841          */
 842         fio_fill_default_options(&def_thread);
 843
 844         def_thread.o.timeout = def_timeout;
 845         def_thread.o.write_bw_log = write_bw_log;
 846         def_thread.o.write_lat_log = write_lat_log;
 847
 848         return 0;
 849 }
 850
 851 static void free_shm(void)
 852 {
 853         struct shmid_ds sbuf;
 854
 855         if (threads) {
 856                 void *tp = threads;
 857
 858                 threads = NULL;
 859                 file_hash_exit();
 860                 fio_debug_jobp = NULL;
 861                 shmdt(tp);
 862                 shmctl(shm_id, IPC_RMID, &sbuf);
 863         }
 864
 865         scleanup();
 866 }
 867
 868 /*
 869  * The thread area is shared between the main process and the job
 870  * threads/processes. So setup a shared memory segment that will hold
 871  * all the job info. We use the end of the region for keeping track of
 872  * open files across jobs, for file sharing.
 873  */
 874 static int setup_thread_area(void)
 875 {
 876         void *hash;
 877
 878         /*
 879          * 1024 is too much on some machines, scale max_jobs if
 880          * we get a failure that looks like too large a shm segment
 881          */
 882         do {
 883                 size_t size = max_jobs * sizeof(struct thread_data);
 884
 885                 size += file_hash_size;
 886                 size += sizeof(unsigned int);
 887
 888                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 889                 if (shm_id != -1)
 890                         break;
 891                 if (errno != EINVAL) {
 892                         perror("shmget");
 893                         break;
 894                 }
 895
 896                 max_jobs >>= 1;
 897         } while (max_jobs);
 898
 899         if (shm_id == -1)
 900                 return 1;
 901
 902         threads = shmat(shm_id, NULL, 0);
 903         if (threads == (void *) -1) {
 904                 perror("shmat");
 905                 return 1;
 906         }
 907
 908         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 909         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 910         fio_debug_jobp = (void *) hash + file_hash_size;
 911         *fio_debug_jobp = -1;
 912         file_hash_init(hash);
 913         atexit(free_shm);
 914         return 0;
 915 }
 916
 917 static void usage(const char *name)
 918 {
 919         printf("%s\n", fio_version_string);
 920         printf("%s [options] [job options] <job file(s)>\n", name);
 921         printf("\t--debug=options\tEnable debug logging\n");
 922         printf("\t--output\tWrite output to file\n");
 923         printf("\t--timeout\tRuntime in seconds\n");
 924         printf("\t--latency-log\tGenerate per-job latency logs\n");
 925         printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
 926         printf("\t--minimal\tMinimal (terse) output\n");
 927         printf("\t--version\tPrint version info and exit\n");
 928         printf("\t--help\t\tPrint this page\n");
 929         printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of"
 930                 " them\n");
 931         printf("\t--showcmd\tTurn a job file into command line options\n");
 932         printf("\t--eta=when\tWhen ETA estimate should be printed\n");
 933         printf("\t          \tMay be \"always\", \"never\" or \"auto\"\n");
 934         printf("\t--readonly\tTurn on safety read-only checks, preventing"
 935                 " writes\n");
 936         printf("\t--section=name\tOnly run specified section in job file\n");
 937         printf("\t--alloc-size=kb\tSet smalloc pool to this size in kb"
 938                 " (def 1024)\n");
 939         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>\n");
 940 }
 941
 942 #ifdef FIO_INC_DEBUG
 943 struct debug_level debug_levels[] = {
 944         { .name = "process",    .shift = FD_PROCESS, },
 945         { .name = "file",       .shift = FD_FILE, },
 946         { .name = "io",         .shift = FD_IO, },
 947         { .name = "mem",        .shift = FD_MEM, },
 948         { .name = "blktrace",   .shift = FD_BLKTRACE },
 949         { .name = "verify",     .shift = FD_VERIFY },
 950         { .name = "random",     .shift = FD_RANDOM },
 951         { .name = "parse",      .shift = FD_PARSE },
 952         { .name = "diskutil",   .shift = FD_DISKUTIL },
 953         { .name = "job",        .shift = FD_JOB },
 954         { .name = "mutex",      .shift = FD_MUTEX },
 955         { .name = NULL, },
 956 };
 957
 958 static int set_debug(const char *string)
 959 {
 960         struct debug_level *dl;
 961         char *p = (char *) string;
 962         char *opt;
 963         int i;
 964
 965         if (!strcmp(string, "?") || !strcmp(string, "help")) {
 966                 int i;
 967
 968                 log_info("fio: dumping debug options:");
 969                 for (i = 0; debug_levels[i].name; i++) {
 970                         dl = &debug_levels[i];
 971                         log_info("%s,", dl->name);
 972                 }
 973                 log_info("all\n");
 974                 return 1;
 975         }
 976
 977         while ((opt = strsep(&p, ",")) != NULL) {
 978                 int found = 0;
 979
 980                 if (!strncmp(opt, "all", 3)) {
 981                         log_info("fio: set all debug options\n");
 982                         fio_debug = ~0UL;
 983                         continue;
 984                 }
 985
 986                 for (i = 0; debug_levels[i].name; i++) {
 987                         dl = &debug_levels[i];
 988                         found = !strncmp(opt, dl->name, strlen(dl->name));
 989                         if (!found)
 990                                 continue;
 991
 992                         if (dl->shift == FD_JOB) {
 993                                 opt = strchr(opt, ':');
 994                                 if (!opt) {
 995                                         log_err("fio: missing job number\n");
 996                                         break;
 997                                 }
 998                                 opt++;
 999                                 fio_debug_jobno = atoi(opt);
1000                                 log_info("fio: set debug jobno %d\n",
1001                                                         fio_debug_jobno);
1002                         } else {
1003                                 log_info("fio: set debug option %s\n", opt);
1004                                 fio_debug |= (1UL << dl->shift);
1005                         }
1006                         break;
1007                 }
1008
1009                 if (!found)
1010                         log_err("fio: debug mask %s not found\n", opt);
1011         }
1012         return 0;
1013 }
1014 #else
1015 static int set_debug(const char *string)
1016 {
1017         log_err("fio: debug tracing not included in build\n");
1018         return 1;
1019 }
1020 #endif
1021
1022 static int load_profile(const char *profile)
1023 {
1024         struct thread_data *td, *td_parent;
1025         const char **o;
1026         int i, in_global = 1;
1027         char jobname[32];
1028
1029         dprint(FD_PARSE, "loading profile %s\n", profile);
1030
1031         for (i = 0; i < PROFILE_END; i++) {
1032                 if (!strcmp(profile, profiles[i]))
1033                         break;
1034         }
1035
1036         if (i == PROFILE_END) {
1037                 log_err("fio: unknown profile %s\n", profile);
1038                 return 1;
1039         }
1040
1041         o = fio_prof_strings[i];
1042         if (!o)
1043                 return 0;
1044
1045         i = 0;
1046         td_parent = td = NULL;
1047         while (o[i]) {
1048                 if (!strncmp(o[i], "name", 4)) {
1049                         in_global = 0;
1050                         if (td)
1051                                 add_job(td, jobname, 0);
1052                         td = NULL;
1053                         sprintf(jobname, "%s", o[i] + 5);
1054                 }
1055                 if (in_global && !td_parent)
1056                         td_parent = get_new_job(1, &def_thread);
1057                 else if (!in_global && !td) {
1058                         if (!td_parent)
1059                                 td_parent = &def_thread;
1060                         td = get_new_job(0, td_parent);
1061                 }
1062                 if (in_global)
1063                         fio_options_parse(td_parent, (char **) &o[i], 1);
1064                 else
1065                         fio_options_parse(td, (char **) &o[i], 1);
1066                 i++;
1067         }
1068         if (td)
1069                 add_job(td, jobname, 0);
1070         return 0;
1071 }
1072
1073 static int parse_cmd_line(int argc, char *argv[])
1074 {
1075         struct thread_data *td = NULL;
1076         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1077
1078         while ((c = getopt_long_only(argc, argv, "", l_opts, &lidx)) != -1) {
1079                 switch (c) {
1080                 case 'a':
1081                         smalloc_pool_size = atoi(optarg);
1082                         break;
1083                 case 't':
1084                         def_timeout = atoi(optarg);
1085                         break;
1086                 case 'l':
1087                         write_lat_log = 1;
1088                         break;
1089                 case 'w':
1090                         write_bw_log = 1;
1091                         break;
1092                 case 'o':
1093                         f_out = fopen(optarg, "w+");
1094                         if (!f_out) {
1095                                 perror("fopen output");
1096                                 exit(1);
1097                         }
1098                         f_err = f_out;
1099                         break;
1100                 case 'm':
1101                         terse_output = 1;
1102                         break;
1103                 case 'h':
1104                         usage(argv[0]);
1105                         exit(0);
1106                 case 'c':
1107                         exit(fio_show_option_help(optarg));
1108                 case 's':
1109                         dump_cmdline = 1;
1110                         break;
1111                 case 'r':
1112                         read_only = 1;
1113                         break;
1114                 case 'v':
1115                         printf("%s\n", fio_version_string);
1116                         exit(0);
1117                 case 'e':
1118                         if (!strcmp("always", optarg))
1119                                 eta_print = FIO_ETA_ALWAYS;
1120                         else if (!strcmp("never", optarg))
1121                                 eta_print = FIO_ETA_NEVER;
1122                         break;
1123                 case 'd':
1124                         if (set_debug(optarg))
1125                                 do_exit++;
1126                         break;
1127                 case 'x':
1128                         if (!strcmp(optarg, "global")) {
1129                                 log_err("fio: can't use global as only "
1130                                         "section\n");
1131                                 do_exit++;
1132                                 exit_val = 1;
1133                                 break;
1134                         }
1135                         if (job_section)
1136                                 free(job_section);
1137                         job_section = strdup(optarg);
1138                         break;
1139                 case 'p':
1140                         if (load_profile(optarg))
1141                                 do_exit++;
1142                         break;
1143                 case FIO_GETOPT_JOB: {
1144                         const char *opt = l_opts[lidx].name;
1145                         char *val = optarg;
1146
1147                         if (!strncmp(opt, "name", 4) && td) {
1148                                 ret = add_job(td, td->o.name ?: "fio", 0);
1149                                 if (ret) {
1150                                         put_job(td);
1151                                         return 0;
1152                                 }
1153                                 td = NULL;
1154                         }
1155                         if (!td) {
1156                                 int is_section = !strncmp(opt, "name", 4);
1157                                 int global = 0;
1158
1159                                 if (!is_section || !strncmp(val, "global", 6))
1160                                         global = 1;
1161
1162                                 if (is_section && skip_this_section(val))
1163                                         continue;
1164
1165                                 td = get_new_job(global, &def_thread);
1166                                 if (!td)
1167                                         return 0;
1168                         }
1169
1170                         ret = fio_cmd_option_parse(td, opt, val);
1171                         break;
1172                 }
1173                 default:
1174                         do_exit++;
1175                         exit_val = 1;
1176                         break;
1177                 }
1178         }
1179
1180         if (do_exit)
1181                 exit(exit_val);
1182
1183         if (td) {
1184                 if (!ret)
1185                         ret = add_job(td, td->o.name ?: "fio", 0);
1186                 if (ret)
1187                         put_job(td);
1188         }
1189
1190         while (optind < argc) {
1191                 ini_idx++;
1192                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1193                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1194                 optind++;
1195         }
1196
1197         return ini_idx;
1198 }
1199
1200 int parse_options(int argc, char *argv[])
1201 {
1202         int job_files, i;
1203
1204         f_out = stdout;
1205         f_err = stderr;
1206
1207         fio_options_dup_and_init(l_opts);
1208
1209         if (setup_thread_area())
1210                 return 1;
1211         if (fill_def_thread())
1212                 return 1;
1213
1214         job_files = parse_cmd_line(argc, argv);
1215
1216         for (i = 0; i < job_files; i++) {
1217                 if (fill_def_thread())
1218                         return 1;
1219                 if (parse_jobs_ini(ini_file[i], i))
1220                         return 1;
1221                 free(ini_file[i]);
1222         }
1223
1224         free(ini_file);
1225         options_mem_free(&def_thread);
1226
1227         if (!thread_number) {
1228                 if (dump_cmdline)
1229                         return 0;
1230
1231                 log_err("No jobs defined(s)\n\n");
1232                 usage(argv[0]);
1233                 return 1;
1234         }
1235
1236         if (def_thread.o.gtod_offload) {
1237                 fio_gtod_init();
1238                 fio_gtod_offload = 1;
1239                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1240         }
1241
1242         return 0;
1243 }