init.c

   1 /*
   2  * This file contains job initialization and setup functions.
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <fcntl.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <sys/ipc.h>
  12 #include <sys/shm.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15
  16 #include "fio.h"
  17 #include "parse.h"
  18
  19 /*
  20  * The default options
  21  */
  22 #define DEF_BS                  (4096)
  23 #define DEF_TIMEOUT             (0)
  24 #define DEF_RATE_CYCLE          (1000)
  25 #define DEF_ODIRECT             (1)
  26 #define DEF_IO_ENGINE           (FIO_SYNCIO)
  27 #define DEF_IO_ENGINE_NAME      "sync"
  28 #define DEF_SEQUENTIAL          (1)
  29 #define DEF_RAND_REPEAT         (1)
  30 #define DEF_OVERWRITE           (1)
  31 #define DEF_INVALIDATE          (1)
  32 #define DEF_SYNCIO              (0)
  33 #define DEF_RANDSEED            (0xb1899bedUL)
  34 #define DEF_BWAVGTIME           (500)
  35 #define DEF_CREATE_SER          (1)
  36 #define DEF_CREATE_FSYNC        (1)
  37 #define DEF_LOOPS               (1)
  38 #define DEF_VERIFY              (0)
  39 #define DEF_STONEWALL           (0)
  40 #define DEF_NUMJOBS             (1)
  41 #define DEF_USE_THREAD          (0)
  42 #define DEF_FILE_SIZE           (1024 * 1024 * 1024UL)
  43 #define DEF_ZONE_SIZE           (0)
  44 #define DEF_ZONE_SKIP           (0)
  45 #define DEF_RWMIX_CYCLE         (500)
  46 #define DEF_RWMIX_READ          (50)
  47 #define DEF_NICE                (0)
  48 #define DEF_NR_FILES            (1)
  49 #define DEF_UNLINK              (0)
  50 #define DEF_WRITE_BW_LOG        (0)
  51 #define DEF_WRITE_LAT_LOG       (0)
  52
  53 static int def_timeout = DEF_TIMEOUT;
  54
  55 static char fio_version_string[] = "fio 1.5";
  56
  57 static char **ini_file;
  58 static int max_jobs = MAX_JOBS;
  59
  60 struct thread_data def_thread;
  61 struct thread_data *threads = NULL;
  62
  63 int rate_quit = 0;
  64 int exitall_on_terminate = 0;
  65 int terse_output = 0;
  66 unsigned long long mlock_size = 0;
  67 FILE *f_out = NULL;
  68 FILE *f_err = NULL;
  69
  70 static int write_lat_log = DEF_WRITE_LAT_LOG;
  71 static int write_bw_log = DEF_WRITE_BW_LOG;
  72
  73 /*
  74  * Return a free job structure.
  75  */
  76 static struct thread_data *get_new_job(int global, struct thread_data *parent)
  77 {
  78         struct thread_data *td;
  79
  80         if (global)
  81                 return &def_thread;
  82         if (thread_number >= max_jobs)
  83                 return NULL;
  84
  85         td = &threads[thread_number++];
  86         *td = *parent;
  87         td->name[0] = '\0';
  88
  89         td->thread_number = thread_number;
  90         return td;
  91 }
  92
  93 static void put_job(struct thread_data *td)
  94 {
  95         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
  96         thread_number--;
  97 }
  98
  99 /*
 100  * Adds a job to the list of things todo. Sanitizes the various options
 101  * to make sure we don't have conflicts, and initializes various
 102  * members of td.
 103  */
 104 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 105 {
 106         char *ddir_str[] = { "read", "write", "randread", "randwrite",
 107                              "rw", NULL, "randrw" };
 108         struct stat sb;
 109         int numjobs, ddir, i;
 110         struct fio_file *f;
 111
 112 #ifndef FIO_HAVE_LIBAIO
 113         if (td->io_engine == FIO_LIBAIO) {
 114                 log_err("Linux libaio not available\n");
 115                 return 1;
 116         }
 117 #endif
 118 #ifndef FIO_HAVE_POSIXAIO
 119         if (td->io_engine == FIO_POSIXAIO) {
 120                 log_err("posix aio not available\n");
 121                 return 1;
 122         }
 123 #endif
 124
 125         /*
 126          * the def_thread is just for options, it's not a real job
 127          */
 128         if (td == &def_thread)
 129                 return 0;
 130
 131         /*
 132          * Set default io engine, if none set
 133          */
 134         if (!td->io_ops) {
 135                 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
 136                 if (!td->io_ops) {
 137                         log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
 138                         return 1;
 139                 }
 140         }
 141
 142         if (td->io_ops->flags & FIO_SYNCIO)
 143                 td->iodepth = 1;
 144         else {
 145                 if (!td->iodepth)
 146                         td->iodepth = td->nr_files;
 147         }
 148
 149         /*
 150          * only really works for sequential io for now, and with 1 file
 151          */
 152         if (td->zone_size && !td->sequential && td->nr_files == 1)
 153                 td->zone_size = 0;
 154
 155         /*
 156          * Reads can do overwrites, we always need to pre-create the file
 157          */
 158         if (td_read(td) || td_rw(td))
 159                 td->overwrite = 1;
 160
 161         td->filetype = FIO_TYPE_FILE;
 162         if (!stat(jobname, &sb)) {
 163                 if (S_ISBLK(sb.st_mode))
 164                         td->filetype = FIO_TYPE_BD;
 165                 else if (S_ISCHR(sb.st_mode))
 166                         td->filetype = FIO_TYPE_CHAR;
 167         }
 168
 169         if (td->odirect)
 170                 td->io_ops->flags |= FIO_RAWIO;
 171
 172         if (td->filename)
 173                 td->nr_uniq_files = 1;
 174         else
 175                 td->nr_uniq_files = td->nr_files;
 176
 177         if (td->filetype == FIO_TYPE_FILE || td->filename) {
 178                 char tmp[PATH_MAX];
 179                 int len = 0;
 180                 int i;
 181
 182                 if (td->directory && td->directory[0] != '\0')
 183                         sprintf(tmp, "%s/", td->directory);
 184
 185                 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
 186
 187                 for_each_file(td, f, i) {
 188                         memset(f, 0, sizeof(*f));
 189                         f->fd = -1;
 190
 191                         if (td->filename)
 192                                 sprintf(tmp + len, "%s", td->filename);
 193                         else
 194                                 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
 195                         f->file_name = strdup(tmp);
 196                 }
 197         } else {
 198                 td->nr_files = 1;
 199                 td->files = malloc(sizeof(struct fio_file));
 200                 f = &td->files[0];
 201
 202                 memset(f, 0, sizeof(*f));
 203                 f->fd = -1;
 204                 f->file_name = strdup(jobname);
 205         }
 206
 207         for_each_file(td, f, i) {
 208                 f->file_size = td->total_file_size / td->nr_files;
 209                 f->file_offset = td->start_offset;
 210         }
 211
 212         fio_sem_init(&td->mutex, 0);
 213
 214         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
 215         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
 216         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
 217
 218         if (td->min_bs == -1U)
 219                 td->min_bs = td->bs;
 220         if (td->max_bs == -1U)
 221                 td->max_bs = td->bs;
 222         if (td_read(td) && !td_rw(td))
 223                 td->verify = 0;
 224
 225         if (td->stonewall && td->thread_number > 1)
 226                 groupid++;
 227
 228         td->groupid = groupid;
 229
 230         if (setup_rate(td))
 231                 goto err;
 232
 233         if (td->write_lat_log) {
 234                 setup_log(&td->slat_log);
 235                 setup_log(&td->clat_log);
 236         }
 237         if (td->write_bw_log)
 238                 setup_log(&td->bw_log);
 239
 240         if (td->name[0] == '\0')
 241                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
 242
 243         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 244
 245         if (!terse_output) {
 246                 if (!job_add_num) {
 247                         if (td->io_ops->flags & FIO_CPUIO)
 248                                 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
 249                         else
 250                                 fprintf(f_out, "%s: (g=%d): rw=%s, odir=%d, bs=%d-%d, rate=%d, ioengine=%s, iodepth=%d\n", td->name, td->groupid, ddir_str[ddir], td->odirect, td->min_bs, td->max_bs, td->rate, td->io_ops->name, td->iodepth);
 251                 } else if (job_add_num == 1)
 252                         fprintf(f_out, "...\n");
 253         }
 254
 255         /*
 256          * recurse add identical jobs, clear numjobs and stonewall options
 257          * as they don't apply to sub-jobs
 258          */
 259         numjobs = td->numjobs;
 260         while (--numjobs) {
 261                 struct thread_data *td_new = get_new_job(0, td);
 262
 263                 if (!td_new)
 264                         goto err;
 265
 266                 td_new->numjobs = 1;
 267                 td_new->stonewall = 0;
 268                 job_add_num = numjobs - 1;
 269
 270                 if (add_job(td_new, jobname, job_add_num))
 271                         goto err;
 272         }
 273         return 0;
 274 err:
 275         put_job(td);
 276         return -1;
 277 }
 278
 279 /*
 280  * Initialize the various random states we need (random io, block size ranges,
 281  * read/write mix, etc).
 282  */
 283 int init_random_state(struct thread_data *td)
 284 {
 285         unsigned long seeds[4];
 286         int fd, num_maps, blocks, i;
 287         struct fio_file *f;
 288
 289         fd = open("/dev/urandom", O_RDONLY);
 290         if (fd == -1) {
 291                 td_verror(td, errno);
 292                 return 1;
 293         }
 294
 295         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 296                 td_verror(td, EIO);
 297                 close(fd);
 298                 return 1;
 299         }
 300
 301         close(fd);
 302
 303         os_random_seed(seeds[0], &td->bsrange_state);
 304         os_random_seed(seeds[1], &td->verify_state);
 305         os_random_seed(seeds[2], &td->rwmix_state);
 306
 307         if (td->sequential)
 308                 return 0;
 309
 310         if (td->rand_repeatable)
 311                 seeds[3] = DEF_RANDSEED;
 312
 313         for_each_file(td, f, i) {
 314                 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
 315                 num_maps = blocks / BLOCKS_PER_MAP;
 316                 f->file_map = malloc(num_maps * sizeof(long));
 317                 f->num_maps = num_maps;
 318                 memset(f->file_map, 0, num_maps * sizeof(long));
 319         }
 320
 321         os_random_seed(seeds[3], &td->random_state);
 322         return 0;
 323 }
 324
 325 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 326 {
 327 #ifdef FIO_HAVE_CPU_AFFINITY
 328         unsigned int i;
 329
 330         CPU_ZERO(&cpumask);
 331
 332         for (i = 0; i < sizeof(int) * 8; i++) {
 333                 if ((1 << i) & cpu)
 334                         CPU_SET(i, &cpumask);
 335         }
 336 #endif
 337 }
 338
 339 static int is_empty_or_comment(char *line)
 340 {
 341         unsigned int i;
 342
 343         for (i = 0; i < strlen(line); i++) {
 344                 if (line[i] == ';')
 345                         return 1;
 346                 if (!isspace(line[i]) && !iscntrl(line[i]))
 347                         return 0;
 348         }
 349
 350         return 1;
 351 }
 352
 353 static int str_rw_cb(void *data, char *mem)
 354 {
 355         struct thread_data *td = data;
 356
 357         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 358                 td->ddir = DDIR_READ;
 359                 td->sequential = 1;
 360                 return 0;
 361         } else if (!strncmp(mem, "randread", 8)) {
 362                 td->ddir = DDIR_READ;
 363                 td->sequential = 0;
 364                 return 0;
 365         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 366                 td->ddir = DDIR_WRITE;
 367                 td->sequential = 1;
 368                 return 0;
 369         } else if (!strncmp(mem, "randwrite", 9)) {
 370                 td->ddir = DDIR_WRITE;
 371                 td->sequential = 0;
 372                 return 0;
 373         } else if (!strncmp(mem, "rw", 2)) {
 374                 td->ddir = 0;
 375                 td->iomix = 1;
 376                 td->sequential = 1;
 377                 return 0;
 378         } else if (!strncmp(mem, "randrw", 6)) {
 379                 td->ddir = 0;
 380                 td->iomix = 1;
 381                 td->sequential = 0;
 382                 return 0;
 383         }
 384
 385         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 386         return 1;
 387 }
 388
 389 static int str_verify_cb(void *data, char *mem)
 390 {
 391         struct thread_data *td = data;
 392
 393         if (!strncmp(mem, "0", 1)) {
 394                 td->verify = VERIFY_NONE;
 395                 return 0;
 396         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 397                 td->verify = VERIFY_MD5;
 398                 return 0;
 399         } else if (!strncmp(mem, "crc32", 5)) {
 400                 td->verify = VERIFY_CRC32;
 401                 return 0;
 402         }
 403
 404         log_err("fio: verify types: md5, crc32\n");
 405         return 1;
 406 }
 407
 408 static int str_mem_cb(void *data, char *mem)
 409 {
 410         struct thread_data *td = data;
 411
 412         if (!strncmp(mem, "malloc", 6)) {
 413                 td->mem_type = MEM_MALLOC;
 414                 return 0;
 415         } else if (!strncmp(mem, "shm", 3)) {
 416                 td->mem_type = MEM_SHM;
 417                 return 0;
 418         } else if (!strncmp(mem, "mmap", 4)) {
 419                 td->mem_type = MEM_MMAP;
 420                 return 0;
 421         }
 422
 423         log_err("fio: mem type: malloc, shm, mmap\n");
 424         return 1;
 425 }
 426
 427 static int str_ioengine_cb(void *data, char *str)
 428 {
 429         struct thread_data *td = data;
 430
 431         td->io_ops = load_ioengine(td, str);
 432         if (td->io_ops)
 433                 return 0;
 434
 435         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
 436         return 1;
 437 }
 438
 439 /*
 440  * This is our [ini] type file parser.
 441  */
 442 int parse_jobs_ini(char *file, int stonewall_flag)
 443 {
 444         unsigned int prioclass, prio, cpu, global, il;
 445         unsigned long long ull;
 446         unsigned long ul1, ul2;
 447         struct thread_data *td;
 448         char *string, *name, *tmpbuf;
 449         fpos_t off;
 450         FILE *f;
 451         char *p;
 452         int ret = 0, stonewall;
 453
 454         f = fopen(file, "r");
 455         if (!f) {
 456                 perror("fopen job file");
 457                 return 1;
 458         }
 459
 460         string = malloc(4096);
 461         name = malloc(256);
 462         tmpbuf = malloc(4096);
 463
 464         stonewall = stonewall_flag;
 465         while ((p = fgets(string, 4096, f)) != NULL) {
 466                 if (ret)
 467                         break;
 468                 if (is_empty_or_comment(p))
 469                         continue;
 470                 if (sscanf(p, "[%s]", name) != 1)
 471                         continue;
 472
 473                 global = !strncmp(name, "global", 6);
 474
 475                 name[strlen(name) - 1] = '\0';
 476
 477                 td = get_new_job(global, &def_thread);
 478                 if (!td) {
 479                         ret = 1;
 480                         break;
 481                 }
 482
 483                 /*
 484                  * Seperate multiple job files by a stonewall
 485                  */
 486                 if (!global && stonewall) {
 487                         td->stonewall = stonewall;
 488                         stonewall = 0;
 489                 }
 490
 491                 fgetpos(f, &off);
 492                 while ((p = fgets(string, 4096, f)) != NULL) {
 493                         if (is_empty_or_comment(p))
 494                                 continue;
 495                         if (strstr(p, "["))
 496                                 break;
 497                         strip_blank_front(&p);
 498                         strip_blank_end(p);
 499
 500                         if (!check_int(p, "prio", &prio)) {
 501 #ifndef FIO_HAVE_IOPRIO
 502                                 log_err("io priorities not available\n");
 503                                 ret = 1;
 504                                 break;
 505 #endif
 506                                 td->ioprio |= prio;
 507                                 fgetpos(f, &off);
 508                                 continue;
 509                         }
 510                         if (!check_int(p, "prioclass", &prioclass)) {
 511 #ifndef FIO_HAVE_IOPRIO
 512                                 log_err("io priorities not available\n");
 513                                 ret = 1;
 514                                 break;
 515 #else
 516                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 517                                 fgetpos(f, &off);
 518                                 continue;
 519 #endif
 520                         }
 521                         if (!check_int(p, "direct", &il)) {
 522                                 td->odirect = il;
 523                                 fgetpos(f, &off);
 524                                 continue;
 525                         }
 526                         if (!check_int(p, "rand_repeatable", &il)) {
 527                                 td->rand_repeatable = il;
 528                                 fgetpos(f, &off);
 529                                 continue;
 530                         }
 531                         if (!check_int(p, "rate", &td->rate)) {
 532                                 fgetpos(f, &off);
 533                                 continue;
 534                         }
 535                         if (!check_int(p, "ratemin", &td->ratemin)) {
 536                                 fgetpos(f, &off);
 537                                 continue;
 538                         }
 539                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 540                                 fgetpos(f, &off);
 541                                 continue;
 542                         }
 543                         if (!check_int(p, "cpuload", &td->cpuload)) {
 544                                 fgetpos(f, &off);
 545                                 continue;
 546                         }
 547                         if (!check_int(p, "cpuchunks", &td->cpucycle)) {
 548                                 fgetpos(f, &off);
 549                                 continue;
 550                         }
 551                         if (!check_int(p, "thinktime", &td->thinktime)) {
 552                                 fgetpos(f, &off);
 553                                 continue;
 554                         }
 555                         if (!check_int(p, "cpumask", &cpu)) {
 556 #ifndef FIO_HAVE_CPU_AFFINITY
 557                                 log_err("cpu affinity not available\n");
 558                                 ret = 1;
 559                                 break;
 560 #endif
 561                                 fill_cpu_mask(td->cpumask, cpu);
 562                                 fgetpos(f, &off);
 563                                 continue;
 564                         }
 565                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 566                                 fgetpos(f, &off);
 567                                 td->end_fsync = 1;
 568                                 continue;
 569                         }
 570                         if (!check_int(p, "startdelay", &td->start_delay)) {
 571                                 fgetpos(f, &off);
 572                                 continue;
 573                         }
 574                         if (!check_str_time(p, "timeout", &ull)) {
 575                                 td->timeout = ull;
 576                                 fgetpos(f, &off);
 577                                 continue;
 578                         }
 579                         if (!check_int(p, "invalidate", &il)) {
 580                                 td->invalidate_cache = il;
 581                                 fgetpos(f, &off);
 582                                 continue;
 583                         }
 584                         if (!check_int(p, "iodepth", &td->iodepth)) {
 585                                 fgetpos(f, &off);
 586                                 continue;
 587                         }
 588                         if (!check_int(p, "sync", &il)) {
 589                                 td->sync_io = il;
 590                                 fgetpos(f, &off);
 591                                 continue;
 592                         }
 593                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 594                                 fgetpos(f, &off);
 595                                 continue;
 596                         }
 597                         if (!check_int(p, "create_serialize", &il)) {
 598                                 td->create_serialize = il;
 599                                 fgetpos(f, &off);
 600                                 continue;
 601                         }
 602                         if (!check_int(p, "create_fsync", &il)) {
 603                                 td->create_fsync = il;
 604                                 fgetpos(f, &off);
 605                                 continue;
 606                         }
 607                         if (!check_int(p, "end_fsync", &il)) {
 608                                 td->end_fsync = il;
 609                                 fgetpos(f, &off);
 610                                 continue;
 611                         }
 612                         if (!check_int(p, "loops", &td->loops)) {
 613                                 fgetpos(f, &off);
 614                                 continue;
 615                         }
 616                         if (!check_int(p, "numjobs", &td->numjobs)) {
 617                                 fgetpos(f, &off);
 618                                 continue;
 619                         }
 620                         if (!check_int(p, "overwrite", &il)) {
 621                                 td->overwrite = il;
 622                                 fgetpos(f, &off);
 623                                 continue;
 624                         }
 625                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 626                                 fgetpos(f, &off);
 627                                 continue;
 628                         }
 629                         if (!check_int(p, "rwmixread", &il)) {
 630                                 if (il > 100)
 631                                         il = 100;
 632                                 td->rwmixread = il;
 633                                 fgetpos(f, &off);
 634                                 continue;
 635                         }
 636                         if (!check_int(p, "rwmixwrite", &il)) {
 637                                 if (il > 100)
 638                                         il = 100;
 639                                 td->rwmixread = 100 - il;
 640                                 fgetpos(f, &off);
 641                                 continue;
 642                         }
 643                         if (!check_int(p, "nice", &td->nice)) {
 644                                 fgetpos(f, &off);
 645                                 continue;
 646                         }
 647                         if (!check_int(p, "nrfiles", &td->nr_files)) {
 648                                 fgetpos(f, &off);
 649                                 continue;
 650                         }
 651                         if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
 652                                 if (ul1 > ul2) {
 653                                         td->max_bs = ul1;
 654                                         td->min_bs = ul2;
 655                                 } else {
 656                                         td->max_bs = ul2;
 657                                         td->min_bs = ul1;
 658                                 }
 659                                 fgetpos(f, &off);
 660                                 continue;
 661                         }
 662                         if (!check_str_bytes(p, "bs", &ull)) {
 663                                 td->bs = ull;
 664                                 fgetpos(f, &off);
 665                                 continue;
 666                         }
 667                         if (!check_str_bytes(p, "size", &td->total_file_size)) {
 668                                 fgetpos(f, &off);
 669                                 continue;
 670                         }
 671                         if (!check_str_bytes(p, "offset", &td->start_offset)) {
 672                                 fgetpos(f, &off);
 673                                 continue;
 674                         }
 675                         if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
 676                                 fgetpos(f, &off);
 677                                 continue;
 678                         }
 679                         if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
 680                                 fgetpos(f, &off);
 681                                 continue;
 682                         }
 683                         if (!check_str_bytes(p, "lockmem", &mlock_size)) {
 684                                 fgetpos(f, &off);
 685                                 continue;
 686                         }
 687                         if (!check_strstore(p, "directory", tmpbuf)) {
 688                                 td->directory = strdup(tmpbuf);
 689                                 fgetpos(f, &off);
 690                                 continue;
 691                         }
 692                         if (!check_strstore(p, "filename", tmpbuf)) {
 693                                 td->filename = strdup(tmpbuf);
 694                                 fgetpos(f, &off);
 695                                 continue;
 696                         }
 697                         if (!check_strstore(p, "name", tmpbuf)) {
 698                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 699                                 fgetpos(f, &off);
 700                                 continue;
 701                         }
 702                         if (!check_str(p, "mem", str_mem_cb, td)) {
 703                                 fgetpos(f, &off);
 704                                 continue;
 705                         }
 706                         if (!check_str(p, "verify", str_verify_cb, td)) {
 707                                 fgetpos(f, &off);
 708                                 continue;
 709                         }
 710                         if (!check_str(p, "rw", str_rw_cb, td)) {
 711                                 fgetpos(f, &off);
 712                                 continue;
 713                         }
 714                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 715                                 fgetpos(f, &off);
 716                                 continue;
 717                         }
 718                         if (!check_strset(p, "exitall")) {
 719                                 exitall_on_terminate = 1;
 720                                 fgetpos(f, &off);
 721                                 continue;
 722                         }
 723                         if (!check_strset(p, "stonewall")) {
 724                                 td->stonewall = 1;
 725                                 fgetpos(f, &off);
 726                                 continue;
 727                         }
 728                         if (!check_strset(p, "thread")) {
 729                                 td->use_thread = 1;
 730                                 fgetpos(f, &off);
 731                                 continue;
 732                         }
 733                         if (!check_strset(p, "unlink")) {
 734                                 td->unlink = 1;
 735                                 fgetpos(f, &off);
 736                                 continue;
 737                         }
 738                         if (!check_strset(p, "write_bw_log")) {
 739                                 td->write_bw_log = 1;
 740                                 fgetpos(f, &off);
 741                                 continue;
 742                         }
 743                         if (!check_strset(p, "write_lat_log")) {
 744                                 td->write_lat_log = 1;
 745                                 fgetpos(f, &off);
 746                                 continue;
 747                         }
 748                         if (!check_strstore(p, "iolog", tmpbuf)) {
 749                                 if (td->write_iolog) {
 750                                         log_err("fio: read iolog overrides given write_iolog\n");
 751                                         free(td->iolog_file);
 752                                         td->write_iolog = 0;
 753                                 }
 754                                 td->iolog_file = strdup(tmpbuf);
 755                                 td->read_iolog = 1;
 756                                 fgetpos(f, &off);
 757                                 continue;
 758                         }
 759                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 760                                 if (!td->read_iolog) {
 761                                         td->iolog_file = strdup(tmpbuf);
 762                                         td->write_iolog = 1;
 763                                 } else
 764                                         log_err("fio: read iolog overrides given write_iolog\n");
 765                                 fgetpos(f, &off);
 766                                 continue;
 767                         }
 768                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 769                                 td->exec_prerun = strdup(tmpbuf);
 770                                 fgetpos(f, &off);
 771                                 continue;
 772                         }
 773                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 774                                 td->exec_postrun = strdup(tmpbuf);
 775                                 fgetpos(f, &off);
 776                                 continue;
 777                         }
 778                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 779 #ifndef FIO_HAVE_IOSCHED_SWITCH
 780                                 log_err("io scheduler switching not available\n");
 781                                 ret = 1;
 782                                 break;
 783 #else
 784                                 td->ioscheduler = strdup(tmpbuf);
 785                                 fgetpos(f, &off);
 786                                 continue;
 787 #endif
 788                         }
 789
 790                         /*
 791                          * Don't break here, continue parsing options so we
 792                          * dump all the bad ones. Makes trial/error fixups
 793                          * easier on the user.
 794                          */
 795                         printf("Client%d: bad option %s\n",td->thread_number,p);
 796                         ret = 1;
 797                 }
 798
 799                 if (!ret) {
 800                         fsetpos(f, &off);
 801                         ret = add_job(td, name, 0);
 802                 }
 803                 if (ret)
 804                         break;
 805         }
 806
 807         free(string);
 808         free(name);
 809         free(tmpbuf);
 810         fclose(f);
 811         return ret;
 812 }
 813
 814 static int fill_def_thread(void)
 815 {
 816         memset(&def_thread, 0, sizeof(def_thread));
 817
 818         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
 819                 perror("sched_getaffinity");
 820                 return 1;
 821         }
 822
 823         /*
 824          * fill globals
 825          */
 826         def_thread.ddir = DDIR_READ;
 827         def_thread.iomix = 0;
 828         def_thread.bs = DEF_BS;
 829         def_thread.min_bs = -1;
 830         def_thread.max_bs = -1;
 831         def_thread.odirect = DEF_ODIRECT;
 832         def_thread.ratecycle = DEF_RATE_CYCLE;
 833         def_thread.sequential = DEF_SEQUENTIAL;
 834         def_thread.timeout = def_timeout;
 835         def_thread.overwrite = DEF_OVERWRITE;
 836         def_thread.invalidate_cache = DEF_INVALIDATE;
 837         def_thread.sync_io = DEF_SYNCIO;
 838         def_thread.mem_type = MEM_MALLOC;
 839         def_thread.bw_avg_time = DEF_BWAVGTIME;
 840         def_thread.create_serialize = DEF_CREATE_SER;
 841         def_thread.create_fsync = DEF_CREATE_FSYNC;
 842         def_thread.loops = DEF_LOOPS;
 843         def_thread.verify = DEF_VERIFY;
 844         def_thread.stonewall = DEF_STONEWALL;
 845         def_thread.numjobs = DEF_NUMJOBS;
 846         def_thread.use_thread = DEF_USE_THREAD;
 847         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
 848         def_thread.rwmixread = DEF_RWMIX_READ;
 849         def_thread.nice = DEF_NICE;
 850         def_thread.rand_repeatable = DEF_RAND_REPEAT;
 851         def_thread.nr_files = DEF_NR_FILES;
 852         def_thread.unlink = DEF_UNLINK;
 853         def_thread.write_bw_log = write_bw_log;
 854         def_thread.write_lat_log = write_lat_log;
 855 #ifdef FIO_HAVE_DISK_UTIL
 856         def_thread.do_disk_util = 1;
 857 #endif
 858
 859         return 0;
 860 }
 861
 862 static void usage(void)
 863 {
 864         printf("%s\n", fio_version_string);
 865         printf("\t-o Write output to file\n");
 866         printf("\t-t Runtime in seconds\n");
 867         printf("\t-l Generate per-job latency logs\n");
 868         printf("\t-w Generate per-job bandwidth logs\n");
 869         printf("\t-m Minimal (terse) output\n");
 870         printf("\t-v Print version info and exit\n");
 871 }
 872
 873 static int parse_cmd_line(int argc, char *argv[])
 874 {
 875         int c, idx = 1, ini_idx = 0;
 876
 877         while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
 878                 switch (c) {
 879                         case 't':
 880                                 def_timeout = atoi(optarg);
 881                                 idx = optind;
 882                                 break;
 883                         case 'l':
 884                                 write_lat_log = 1;
 885                                 idx = optind;
 886                                 break;
 887                         case 'w':
 888                                 write_bw_log = 1;
 889                                 idx = optind;
 890                                 break;
 891                         case 'o':
 892                                 f_out = fopen(optarg, "w+");
 893                                 if (!f_out) {
 894                                         perror("fopen output");
 895                                         exit(1);
 896                                 }
 897                                 f_err = f_out;
 898                                 idx = optind;
 899                                 break;
 900                         case 'm':
 901                                 terse_output = 1;
 902                                 idx = optind;
 903                                 break;
 904                         case 'h':
 905                                 usage();
 906                                 exit(0);
 907                         case 'v':
 908                                 printf("%s\n", fio_version_string);
 909                                 exit(0);
 910                 }
 911         }
 912
 913         while (idx < argc) {
 914                 ini_idx++;
 915                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
 916                 ini_file[ini_idx - 1] = strdup(argv[idx]);
 917                 idx++;
 918         }
 919
 920         if (!f_out) {
 921                 f_out = stdout;
 922                 f_err = stderr;
 923         }
 924
 925         return ini_idx;
 926 }
 927
 928 static void free_shm(void)
 929 {
 930         struct shmid_ds sbuf;
 931
 932         if (threads) {
 933                 shmdt((void *) threads);
 934                 threads = NULL;
 935                 shmctl(shm_id, IPC_RMID, &sbuf);
 936         }
 937 }
 938
 939 /*
 940  * The thread area is shared between the main process and the job
 941  * threads/processes. So setup a shared memory segment that will hold
 942  * all the job info.
 943  */
 944 static int setup_thread_area(void)
 945 {
 946         /*
 947          * 1024 is too much on some machines, scale max_jobs if
 948          * we get a failure that looks like too large a shm segment
 949          */
 950         do {
 951                 size_t size = max_jobs * sizeof(struct thread_data);
 952
 953                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 954                 if (shm_id != -1)
 955                         break;
 956                 if (errno != EINVAL) {
 957                         perror("shmget");
 958                         break;
 959                 }
 960
 961                 max_jobs >>= 1;
 962         } while (max_jobs);
 963
 964         if (shm_id == -1)
 965                 return 1;
 966
 967         threads = shmat(shm_id, NULL, 0);
 968         if (threads == (void *) -1) {
 969                 perror("shmat");
 970                 return 1;
 971         }
 972
 973         atexit(free_shm);
 974         return 0;
 975 }
 976
 977 int parse_options(int argc, char *argv[])
 978 {
 979         int job_files, i;
 980
 981         if (setup_thread_area())
 982                 return 1;
 983         if (fill_def_thread())
 984                 return 1;
 985
 986         job_files = parse_cmd_line(argc, argv);
 987         if (!job_files) {
 988                 log_err("Need job file(s)\n");
 989                 usage();
 990                 return 1;
 991         }
 992
 993         for (i = 0; i < job_files; i++) {
 994                 if (fill_def_thread())
 995                         return 1;
 996                 if (parse_jobs_ini(ini_file[i], i))
 997                         return 1;
 998                 free(ini_file[i]);
 999         }
1000
1001         free(ini_file);
1002         return 0;
1003 }