init.c

   1 /*
   2  * This file contains the ini and command liner parser. It will create
   3  * and initialize the specified jobs.
   4  */
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <unistd.h>
   8 #include <fcntl.h>
   9 #include <ctype.h>
  10 #include <string.h>
  11 #include <errno.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
  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_CREATE              (1)
  32 #define DEF_INVALIDATE          (1)
  33 #define DEF_SYNCIO              (0)
  34 #define DEF_RANDSEED            (0xb1899bedUL)
  35 #define DEF_BWAVGTIME           (500)
  36 #define DEF_CREATE_SER          (1)
  37 #define DEF_CREATE_FSYNC        (1)
  38 #define DEF_LOOPS               (1)
  39 #define DEF_VERIFY              (0)
  40 #define DEF_STONEWALL           (0)
  41 #define DEF_NUMJOBS             (1)
  42 #define DEF_USE_THREAD          (0)
  43 #define DEF_FILE_SIZE           (1024 * 1024 * 1024UL)
  44 #define DEF_ZONE_SIZE           (0)
  45 #define DEF_ZONE_SKIP           (0)
  46 #define DEF_RWMIX_CYCLE         (500)
  47 #define DEF_RWMIX_READ          (50)
  48 #define DEF_NICE                (0)
  49 #define DEF_NR_FILES            (1)
  50
  51 static int def_timeout = DEF_TIMEOUT;
  52
  53 static char fio_version_string[] = "fio 1.5";
  54
  55 static char **ini_file;
  56 static int max_jobs = MAX_JOBS;
  57
  58 struct thread_data def_thread;
  59 struct thread_data *threads = NULL;
  60
  61 int rate_quit = 0;
  62 int write_lat_log = 0;
  63 int write_bw_log = 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 /*
  71  * Return a free job structure.
  72  */
  73 static struct thread_data *get_new_job(int global, struct thread_data *parent)
  74 {
  75         struct thread_data *td;
  76
  77         if (global)
  78                 return &def_thread;
  79         if (thread_number >= max_jobs)
  80                 return NULL;
  81
  82         td = &threads[thread_number++];
  83         *td = *parent;
  84         td->name[0] = '\0';
  85
  86         td->thread_number = thread_number;
  87         return td;
  88 }
  89
  90 static void put_job(struct thread_data *td)
  91 {
  92         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
  93         thread_number--;
  94 }
  95
  96 /*
  97  * Adds a job to the list of things todo. Sanitizes the various options
  98  * to make sure we don't have conflicts, and initializes various
  99  * members of td.
 100  */
 101 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 102 {
 103         char *ddir_str[] = { "read", "write", "randread", "randwrite",
 104                              "rw", NULL, "randrw" };
 105         struct stat sb;
 106         int numjobs, ddir, i;
 107         struct fio_file *f;
 108
 109 #ifndef FIO_HAVE_LIBAIO
 110         if (td->io_engine == FIO_LIBAIO) {
 111                 log_err("Linux libaio not available\n");
 112                 return 1;
 113         }
 114 #endif
 115 #ifndef FIO_HAVE_POSIXAIO
 116         if (td->io_engine == FIO_POSIXAIO) {
 117                 log_err("posix aio not available\n");
 118                 return 1;
 119         }
 120 #endif
 121
 122         /*
 123          * the def_thread is just for options, it's not a real job
 124          */
 125         if (td == &def_thread)
 126                 return 0;
 127
 128         /*
 129          * Set default io engine, if none set
 130          */
 131         if (!td->io_ops) {
 132                 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
 133                 if (!td->io_ops) {
 134                         log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
 135                         return 1;
 136                 }
 137         }
 138
 139         if (td->io_ops->flags & FIO_SYNCIO)
 140                 td->iodepth = 1;
 141         else {
 142                 if (!td->iodepth)
 143                         td->iodepth = 1;
 144         }
 145
 146         /*
 147          * only really works for sequential io for now, and with 1 file
 148          */
 149         if (td->zone_size && !td->sequential && td->nr_files == 1)
 150                 td->zone_size = 0;
 151
 152         /*
 153          * Reads can do overwrites, we always need to pre-create the file
 154          */
 155         if (td_read(td) || td_rw(td))
 156                 td->overwrite = 1;
 157
 158         td->filetype = FIO_TYPE_FILE;
 159         if (!stat(jobname, &sb)) {
 160                 if (S_ISBLK(sb.st_mode))
 161                         td->filetype = FIO_TYPE_BD;
 162                 else if (S_ISCHR(sb.st_mode))
 163                         td->filetype = FIO_TYPE_CHAR;
 164         }
 165
 166         if (td->filetype == FIO_TYPE_FILE) {
 167                 char tmp[PATH_MAX];
 168                 int len = 0;
 169                 int i;
 170
 171                 if (td->directory && td->directory[0] != '\0')
 172                         sprintf(tmp, "%s/", td->directory);
 173
 174                 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
 175
 176                 for_each_file(td, f, i) {
 177                         memset(f, 0, sizeof(*f));
 178                         f->fd = -1;
 179
 180                         sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
 181                         f->file_name = strdup(tmp);
 182                 }
 183         } else {
 184                 td->nr_files = 1;
 185                 td->files = malloc(sizeof(struct fio_file));
 186                 f = &td->files[0];
 187
 188                 memset(f, 0, sizeof(*f));
 189                 f->fd = -1;
 190                 f->file_name = strdup(jobname);
 191         }
 192
 193         for_each_file(td, f, i) {
 194                 f->file_size = td->total_file_size / td->nr_files;
 195                 f->file_offset = td->start_offset;
 196         }
 197
 198         fio_sem_init(&td->mutex, 0);
 199
 200         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
 201         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
 202         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
 203
 204         if (td->min_bs == -1U)
 205                 td->min_bs = td->bs;
 206         if (td->max_bs == -1U)
 207                 td->max_bs = td->bs;
 208         if (td_read(td) && !td_rw(td))
 209                 td->verify = 0;
 210
 211         if (td->stonewall && td->thread_number > 1)
 212                 groupid++;
 213
 214         td->groupid = groupid;
 215
 216         if (setup_rate(td))
 217                 goto err;
 218
 219         if (write_lat_log) {
 220                 setup_log(&td->slat_log);
 221                 setup_log(&td->clat_log);
 222         }
 223         if (write_bw_log)
 224                 setup_log(&td->bw_log);
 225
 226         if (td->name[0] == '\0')
 227                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
 228
 229         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 230
 231         if (!terse_output) {
 232                 if (!job_add_num) {
 233                         if (td->io_ops->flags & FIO_CPUIO)
 234                                 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
 235                         else
 236                                 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);
 237                 } else if (job_add_num == 1)
 238                         fprintf(f_out, "...\n");
 239         }
 240
 241         /*
 242          * recurse add identical jobs, clear numjobs and stonewall options
 243          * as they don't apply to sub-jobs
 244          */
 245         numjobs = td->numjobs;
 246         while (--numjobs) {
 247                 struct thread_data *td_new = get_new_job(0, td);
 248
 249                 if (!td_new)
 250                         goto err;
 251
 252                 td_new->numjobs = 1;
 253                 td_new->stonewall = 0;
 254                 job_add_num = numjobs - 1;
 255
 256                 if (add_job(td_new, jobname, job_add_num))
 257                         goto err;
 258         }
 259         return 0;
 260 err:
 261         put_job(td);
 262         return -1;
 263 }
 264
 265 /*
 266  * Initialize the various random states we need (random io, block size ranges,
 267  * read/write mix, etc).
 268  */
 269 int init_random_state(struct thread_data *td)
 270 {
 271         unsigned long seeds[4];
 272         int fd, num_maps, blocks, i;
 273
 274         fd = open("/dev/urandom", O_RDONLY);
 275         if (fd == -1) {
 276                 td_verror(td, errno);
 277                 return 1;
 278         }
 279
 280         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 281                 td_verror(td, EIO);
 282                 close(fd);
 283                 return 1;
 284         }
 285
 286         close(fd);
 287
 288         os_random_seed(seeds[0], &td->bsrange_state);
 289         os_random_seed(seeds[1], &td->verify_state);
 290         os_random_seed(seeds[2], &td->rwmix_state);
 291
 292         if (td->sequential)
 293                 return 0;
 294
 295         if (td->rand_repeatable)
 296                 seeds[3] = DEF_RANDSEED;
 297
 298         for (i = 0; i < td->nr_files; i++) {
 299                 struct fio_file *f = &td->files[i];
 300
 301                 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
 302                 num_maps = blocks / BLOCKS_PER_MAP;
 303                 f->file_map = malloc(num_maps * sizeof(long));
 304                 f->num_maps = num_maps;
 305                 memset(f->file_map, 0, num_maps * sizeof(long));
 306         }
 307
 308         os_random_seed(seeds[3], &td->random_state);
 309         return 0;
 310 }
 311
 312 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 313 {
 314 #ifdef FIO_HAVE_CPU_AFFINITY
 315         unsigned int i;
 316
 317         CPU_ZERO(&cpumask);
 318
 319         for (i = 0; i < sizeof(int) * 8; i++) {
 320                 if ((1 << i) & cpu)
 321                         CPU_SET(i, &cpumask);
 322         }
 323 #endif
 324 }
 325
 326 static unsigned long get_mult_time(char c)
 327 {
 328         switch (c) {
 329                 case 'm':
 330                 case 'M':
 331                         return 60;
 332                 case 'h':
 333                 case 'H':
 334                         return 60 * 60;
 335                 case 'd':
 336                 case 'D':
 337                         return 24 * 60 * 60;
 338                 default:
 339                         return 1;
 340         }
 341 }
 342
 343 static unsigned long get_mult_bytes(char c)
 344 {
 345         switch (c) {
 346                 case 'k':
 347                 case 'K':
 348                         return 1024;
 349                 case 'm':
 350                 case 'M':
 351                         return 1024 * 1024;
 352                 case 'g':
 353                 case 'G':
 354                         return 1024 * 1024 * 1024;
 355                 default:
 356                         return 1;
 357         }
 358 }
 359
 360 /*
 361  * convert string after '=' into decimal value, noting any size suffix
 362  */
 363 static int str_to_decimal(char *p, unsigned long long *val, int kilo)
 364 {
 365         char *str;
 366         int len;
 367
 368         str = strchr(p, '=');
 369         if (!str)
 370                 return 1;
 371
 372         str++;
 373         len = strlen(str);
 374
 375         *val = strtoul(str, NULL, 10);
 376         if (*val == ULONG_MAX && errno == ERANGE)
 377                 return 1;
 378
 379         if (kilo)
 380                 *val *= get_mult_bytes(str[len - 1]);
 381         else
 382                 *val *= get_mult_time(str[len - 1]);
 383         return 0;
 384 }
 385
 386 static int check_str_bytes(char *p, char *name, unsigned long long *val)
 387 {
 388         if (strncmp(p, name, strlen(name) - 1))
 389                 return 1;
 390
 391         return str_to_decimal(p, val, 1);
 392 }
 393
 394 static int check_str_time(char *p, char *name, unsigned long long *val)
 395 {
 396         if (strncmp(p, name, strlen(name) - 1))
 397                 return 1;
 398
 399         return str_to_decimal(p, val, 0);
 400 }
 401
 402 static void strip_blank_front(char **p)
 403 {
 404         char *s = *p;
 405
 406         while (isspace(*s))
 407                 s++;
 408 }
 409
 410 static void strip_blank_end(char *p)
 411 {
 412         char *s = p + strlen(p) - 1;
 413
 414         while (isspace(*s) || iscntrl(*s))
 415                 s--;
 416
 417         *(s + 1) = '\0';
 418 }
 419
 420 typedef int (str_cb_fn)(struct thread_data *, char *);
 421
 422 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 423 {
 424         char *s;
 425
 426         if (strncmp(p, name, strlen(name)))
 427                 return 1;
 428
 429         s = strstr(p, name);
 430         if (!s)
 431                 return 1;
 432
 433         s = strchr(s, '=');
 434         if (!s)
 435                 return 1;
 436
 437         s++;
 438         strip_blank_front(&s);
 439         return cb(td, s);
 440 }
 441
 442 static int check_strstore(char *p, char *name, char *dest)
 443 {
 444         char *s;
 445
 446         if (strncmp(p, name, strlen(name)))
 447                 return 1;
 448
 449         s = strstr(p, name);
 450         if (!s)
 451                 return 1;
 452
 453         s = strchr(p, '=');
 454         if (!s)
 455                 return 1;
 456
 457         s++;
 458         strip_blank_front(&s);
 459
 460         strcpy(dest, s);
 461         return 0;
 462 }
 463
 464 static int __check_range_bytes(char *str, unsigned long *val)
 465 {
 466         char suffix;
 467
 468         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 469                 *val *= get_mult_bytes(suffix);
 470                 return 0;
 471         }
 472
 473         if (sscanf(str, "%lu", val) == 1)
 474                 return 0;
 475
 476         return 1;
 477 }
 478
 479 static int check_range_bytes(char *p, char *name, unsigned long *s,
 480                              unsigned long *e)
 481 {
 482         char option[128];
 483         char *str, *p1, *p2;
 484
 485         if (strncmp(p, name, strlen(name)))
 486                 return 1;
 487
 488         strcpy(option, p);
 489         p = option;
 490
 491         str = strstr(p, name);
 492         if (!str)
 493                 return 1;
 494
 495         p += strlen(name);
 496
 497         str = strchr(p, '=');
 498         if (!str)
 499                 return 1;
 500
 501         /*
 502          * 'p' now holds whatever is after the '=' sign
 503          */
 504         p1 = str + 1;
 505
 506         /*
 507          * terminate p1 at the '-' sign
 508          */
 509         p = strchr(p1, '-');
 510         if (!p)
 511                 return 1;
 512
 513         p2 = p + 1;
 514         *p = '\0';
 515
 516         if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
 517                 return 0;
 518
 519         return 1;
 520 }
 521
 522 static int check_int(char *p, char *name, unsigned int *val)
 523 {
 524         char *str;
 525
 526         if (strncmp(p, name, strlen(name)))
 527                 return 1;
 528
 529         str = strstr(p, name);
 530         if (!str)
 531                 return 1;
 532
 533         str = strchr(p, '=');
 534         if (!str)
 535                 return 1;
 536
 537         str++;
 538
 539         if (sscanf(str, "%u", val) == 1)
 540                 return 0;
 541
 542         return 1;
 543 }
 544
 545 static int check_strset(char *p, char *name)
 546 {
 547         return strncmp(p, name, strlen(name));
 548 }
 549
 550 static int is_empty_or_comment(char *line)
 551 {
 552         unsigned int i;
 553
 554         for (i = 0; i < strlen(line); i++) {
 555                 if (line[i] == ';')
 556                         return 1;
 557                 if (!isspace(line[i]) && !iscntrl(line[i]))
 558                         return 0;
 559         }
 560
 561         return 1;
 562 }
 563
 564 static int str_rw_cb(struct thread_data *td, char *mem)
 565 {
 566         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 567                 td->ddir = DDIR_READ;
 568                 td->sequential = 1;
 569                 return 0;
 570         } else if (!strncmp(mem, "randread", 8)) {
 571                 td->ddir = DDIR_READ;
 572                 td->sequential = 0;
 573                 return 0;
 574         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 575                 td->ddir = DDIR_WRITE;
 576                 td->sequential = 1;
 577                 return 0;
 578         } else if (!strncmp(mem, "randwrite", 9)) {
 579                 td->ddir = DDIR_WRITE;
 580                 td->sequential = 0;
 581                 return 0;
 582         } else if (!strncmp(mem, "rw", 2)) {
 583                 td->ddir = 0;
 584                 td->iomix = 1;
 585                 td->sequential = 1;
 586                 return 0;
 587         } else if (!strncmp(mem, "randrw", 6)) {
 588                 td->ddir = 0;
 589                 td->iomix = 1;
 590                 td->sequential = 0;
 591                 return 0;
 592         }
 593
 594         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 595         return 1;
 596 }
 597
 598 static int str_verify_cb(struct thread_data *td, char *mem)
 599 {
 600         if (!strncmp(mem, "0", 1)) {
 601                 td->verify = VERIFY_NONE;
 602                 return 0;
 603         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 604                 td->verify = VERIFY_MD5;
 605                 return 0;
 606         } else if (!strncmp(mem, "crc32", 5)) {
 607                 td->verify = VERIFY_CRC32;
 608                 return 0;
 609         }
 610
 611         log_err("fio: verify types: md5, crc32\n");
 612         return 1;
 613 }
 614
 615 static int str_mem_cb(struct thread_data *td, char *mem)
 616 {
 617         if (!strncmp(mem, "malloc", 6)) {
 618                 td->mem_type = MEM_MALLOC;
 619                 return 0;
 620         } else if (!strncmp(mem, "shm", 3)) {
 621                 td->mem_type = MEM_SHM;
 622                 return 0;
 623         } else if (!strncmp(mem, "mmap", 4)) {
 624                 td->mem_type = MEM_MMAP;
 625                 return 0;
 626         }
 627
 628         log_err("fio: mem type: malloc, shm, mmap\n");
 629         return 1;
 630 }
 631
 632 static int str_ioengine_cb(struct thread_data *td, char *str)
 633 {
 634         td->io_ops = load_ioengine(td, str);
 635         if (td->io_ops)
 636                 return 0;
 637
 638         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
 639         return 1;
 640 }
 641
 642 /*
 643  * This is our [ini] type file parser.
 644  */
 645 int parse_jobs_ini(char *file, int stonewall_flag)
 646 {
 647         unsigned int prioclass, prio, cpu, global, il;
 648         unsigned long long ull;
 649         unsigned long ul1, ul2;
 650         struct thread_data *td;
 651         char *string, *name, *tmpbuf;
 652         fpos_t off;
 653         FILE *f;
 654         char *p;
 655         int ret = 0, stonewall;
 656
 657         f = fopen(file, "r");
 658         if (!f) {
 659                 perror("fopen job file");
 660                 return 1;
 661         }
 662
 663         string = malloc(4096);
 664         name = malloc(256);
 665         tmpbuf = malloc(4096);
 666
 667         stonewall = stonewall_flag;
 668         while ((p = fgets(string, 4096, f)) != NULL) {
 669                 if (ret)
 670                         break;
 671                 if (is_empty_or_comment(p))
 672                         continue;
 673                 if (sscanf(p, "[%s]", name) != 1)
 674                         continue;
 675
 676                 global = !strncmp(name, "global", 6);
 677
 678                 name[strlen(name) - 1] = '\0';
 679
 680                 td = get_new_job(global, &def_thread);
 681                 if (!td) {
 682                         ret = 1;
 683                         break;
 684                 }
 685
 686                 /*
 687                  * Seperate multiple job files by a stonewall
 688                  */
 689                 if (!global && stonewall) {
 690                         td->stonewall = stonewall;
 691                         stonewall = 0;
 692                 }
 693
 694                 fgetpos(f, &off);
 695                 while ((p = fgets(string, 4096, f)) != NULL) {
 696                         if (is_empty_or_comment(p))
 697                                 continue;
 698                         if (strstr(p, "["))
 699                                 break;
 700                         strip_blank_front(&p);
 701                         strip_blank_end(p);
 702
 703                         if (!check_int(p, "prio", &prio)) {
 704 #ifndef FIO_HAVE_IOPRIO
 705                                 log_err("io priorities not available\n");
 706                                 ret = 1;
 707                                 break;
 708 #endif
 709                                 td->ioprio |= prio;
 710                                 fgetpos(f, &off);
 711                                 continue;
 712                         }
 713                         if (!check_int(p, "prioclass", &prioclass)) {
 714 #ifndef FIO_HAVE_IOPRIO
 715                                 log_err("io priorities not available\n");
 716                                 ret = 1;
 717                                 break;
 718 #else
 719                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 720                                 fgetpos(f, &off);
 721                                 continue;
 722 #endif
 723                         }
 724                         if (!check_int(p, "direct", &il)) {
 725                                 td->odirect = il;
 726                                 fgetpos(f, &off);
 727                                 continue;
 728                         }
 729                         if (!check_int(p, "rand_repeatable", &il)) {
 730                                 td->rand_repeatable = il;
 731                                 fgetpos(f, &off);
 732                                 continue;
 733                         }
 734                         if (!check_int(p, "rate", &td->rate)) {
 735                                 fgetpos(f, &off);
 736                                 continue;
 737                         }
 738                         if (!check_int(p, "ratemin", &td->ratemin)) {
 739                                 fgetpos(f, &off);
 740                                 continue;
 741                         }
 742                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 743                                 fgetpos(f, &off);
 744                                 continue;
 745                         }
 746                         if (!check_int(p, "cpuload", &td->cpuload)) {
 747                                 fgetpos(f, &off);
 748                                 continue;
 749                         }
 750                         if (!check_int(p, "cpuchunks", &td->cpucycle)) {
 751                                 fgetpos(f, &off);
 752                                 continue;
 753                         }
 754                         if (!check_int(p, "thinktime", &td->thinktime)) {
 755                                 fgetpos(f, &off);
 756                                 continue;
 757                         }
 758                         if (!check_int(p, "cpumask", &cpu)) {
 759 #ifndef FIO_HAVE_CPU_AFFINITY
 760                                 log_err("cpu affinity not available\n");
 761                                 ret = 1;
 762                                 break;
 763 #endif
 764                                 fill_cpu_mask(td->cpumask, cpu);
 765                                 fgetpos(f, &off);
 766                                 continue;
 767                         }
 768                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 769                                 fgetpos(f, &off);
 770                                 td->end_fsync = 1;
 771                                 continue;
 772                         }
 773                         if (!check_int(p, "startdelay", &td->start_delay)) {
 774                                 fgetpos(f, &off);
 775                                 continue;
 776                         }
 777                         if (!check_str_time(p, "timeout", &ull)) {
 778                                 td->timeout = ull;
 779                                 fgetpos(f, &off);
 780                                 continue;
 781                         }
 782                         if (!check_int(p, "invalidate", &il)) {
 783                                 td->invalidate_cache = il;
 784                                 fgetpos(f, &off);
 785                                 continue;
 786                         }
 787                         if (!check_int(p, "iodepth", &td->iodepth)) {
 788                                 fgetpos(f, &off);
 789                                 continue;
 790                         }
 791                         if (!check_int(p, "sync", &il)) {
 792                                 td->sync_io = il;
 793                                 fgetpos(f, &off);
 794                                 continue;
 795                         }
 796                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 797                                 fgetpos(f, &off);
 798                                 continue;
 799                         }
 800                         if (!check_int(p, "create_serialize", &il)) {
 801                                 td->create_serialize = il;
 802                                 fgetpos(f, &off);
 803                                 continue;
 804                         }
 805                         if (!check_int(p, "create_fsync", &il)) {
 806                                 td->create_fsync = il;
 807                                 fgetpos(f, &off);
 808                                 continue;
 809                         }
 810                         if (!check_int(p, "end_fsync", &il)) {
 811                                 td->end_fsync = il;
 812                                 fgetpos(f, &off);
 813                                 continue;
 814                         }
 815                         if (!check_int(p, "loops", &td->loops)) {
 816                                 fgetpos(f, &off);
 817                                 continue;
 818                         }
 819                         if (!check_int(p, "numjobs", &td->numjobs)) {
 820                                 fgetpos(f, &off);
 821                                 continue;
 822                         }
 823                         if (!check_int(p, "overwrite", &il)) {
 824                                 td->overwrite = il;
 825                                 fgetpos(f, &off);
 826                                 continue;
 827                         }
 828                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 829                                 fgetpos(f, &off);
 830                                 continue;
 831                         }
 832                         if (!check_int(p, "rwmixread", &il)) {
 833                                 if (il > 100)
 834                                         il = 100;
 835                                 td->rwmixread = il;
 836                                 fgetpos(f, &off);
 837                                 continue;
 838                         }
 839                         if (!check_int(p, "rwmixwrite", &il)) {
 840                                 if (il > 100)
 841                                         il = 100;
 842                                 td->rwmixread = 100 - il;
 843                                 fgetpos(f, &off);
 844                                 continue;
 845                         }
 846                         if (!check_int(p, "nice", &td->nice)) {
 847                                 fgetpos(f, &off);
 848                                 continue;
 849                         }
 850                         if (!check_int(p, "nrfiles", &td->nr_files)) {
 851                                 fgetpos(f, &off);
 852                                 continue;
 853                         }
 854                         if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
 855                                 if (ul1 > ul2) {
 856                                         td->max_bs = ul1;
 857                                         td->min_bs = ul2;
 858                                 } else {
 859                                         td->max_bs = ul2;
 860                                         td->min_bs = ul1;
 861                                 }
 862                                 fgetpos(f, &off);
 863                                 continue;
 864                         }
 865                         if (!check_str_bytes(p, "bs", &ull)) {
 866                                 td->bs = ull;
 867                                 fgetpos(f, &off);
 868                                 continue;
 869                         }
 870                         if (!check_str_bytes(p, "size", &td->total_file_size)) {
 871                                 fgetpos(f, &off);
 872                                 continue;
 873                         }
 874                         if (!check_str_bytes(p, "offset", &td->start_offset)) {
 875                                 fgetpos(f, &off);
 876                                 continue;
 877                         }
 878                         if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
 879                                 fgetpos(f, &off);
 880                                 continue;
 881                         }
 882                         if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
 883                                 fgetpos(f, &off);
 884                                 continue;
 885                         }
 886                         if (!check_str_bytes(p, "lockmem", &mlock_size)) {
 887                                 fgetpos(f, &off);
 888                                 continue;
 889                         }
 890                         if (!check_strstore(p, "directory", tmpbuf)) {
 891                                 td->directory = strdup(tmpbuf);
 892                                 fgetpos(f, &off);
 893                                 continue;
 894                         }
 895                         if (!check_strstore(p, "name", tmpbuf)) {
 896                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 897                                 fgetpos(f, &off);
 898                                 continue;
 899                         }
 900                         if (!check_str(p, "mem", str_mem_cb, td)) {
 901                                 fgetpos(f, &off);
 902                                 continue;
 903                         }
 904                         if (!check_str(p, "verify", str_verify_cb, td)) {
 905                                 fgetpos(f, &off);
 906                                 continue;
 907                         }
 908                         if (!check_str(p, "rw", str_rw_cb, td)) {
 909                                 fgetpos(f, &off);
 910                                 continue;
 911                         }
 912                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 913                                 fgetpos(f, &off);
 914                                 continue;
 915                         }
 916                         if (!check_strset(p, "create")) {
 917                                 td->create_file = 1;
 918                                 fgetpos(f, &off);
 919                                 continue;
 920                         }
 921                         if (!check_strset(p, "exitall")) {
 922                                 exitall_on_terminate = 1;
 923                                 fgetpos(f, &off);
 924                                 continue;
 925                         }
 926                         if (!check_strset(p, "stonewall")) {
 927                                 td->stonewall = 1;
 928                                 fgetpos(f, &off);
 929                                 continue;
 930                         }
 931                         if (!check_strset(p, "thread")) {
 932                                 td->use_thread = 1;
 933                                 fgetpos(f, &off);
 934                                 continue;
 935                         }
 936                         if (!check_strstore(p, "iolog", tmpbuf)) {
 937                                 if (td->write_iolog) {
 938                                         log_err("fio: read iolog overrides given write_iolog\n");
 939                                         free(td->iolog_file);
 940                                         td->write_iolog = 0;
 941                                 }
 942                                 td->iolog_file = strdup(tmpbuf);
 943                                 td->read_iolog = 1;
 944                                 fgetpos(f, &off);
 945                                 continue;
 946                         }
 947                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 948                                 if (!td->read_iolog) {
 949                                         td->iolog_file = strdup(tmpbuf);
 950                                         td->write_iolog = 1;
 951                                 } else
 952                                         log_err("fio: read iolog overrides given write_iolog\n");
 953                                 fgetpos(f, &off);
 954                                 continue;
 955                         }
 956                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 957                                 td->exec_prerun = strdup(tmpbuf);
 958                                 fgetpos(f, &off);
 959                                 continue;
 960                         }
 961                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 962                                 td->exec_postrun = strdup(tmpbuf);
 963                                 fgetpos(f, &off);
 964                                 continue;
 965                         }
 966                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 967 #ifndef FIO_HAVE_IOSCHED_SWITCH
 968                                 log_err("io scheduler switching not available\n");
 969                                 ret = 1;
 970                                 break;
 971 #else
 972                                 td->ioscheduler = strdup(tmpbuf);
 973                                 fgetpos(f, &off);
 974                                 continue;
 975 #endif
 976                         }
 977
 978                         /*
 979                          * Don't break here, continue parsing options so we
 980                          * dump all the bad ones. Makes trial/error fixups
 981                          * easier on the user.
 982                          */
 983                         printf("Client%d: bad option %s\n",td->thread_number,p);
 984                         ret = 1;
 985                 }
 986
 987                 if (!ret) {
 988                         fsetpos(f, &off);
 989                         ret = add_job(td, name, 0);
 990                 }
 991                 if (ret)
 992                         break;
 993         }
 994
 995         free(string);
 996         free(name);
 997         free(tmpbuf);
 998         fclose(f);
 999         return ret;
1000 }
1001
1002 static int fill_def_thread(void)
1003 {
1004         memset(&def_thread, 0, sizeof(def_thread));
1005
1006         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1007                 perror("sched_getaffinity");
1008                 return 1;
1009         }
1010
1011         /*
1012          * fill globals
1013          */
1014         def_thread.ddir = DDIR_READ;
1015         def_thread.iomix = 0;
1016         def_thread.bs = DEF_BS;
1017         def_thread.min_bs = -1;
1018         def_thread.max_bs = -1;
1019         def_thread.odirect = DEF_ODIRECT;
1020         def_thread.ratecycle = DEF_RATE_CYCLE;
1021         def_thread.sequential = DEF_SEQUENTIAL;
1022         def_thread.timeout = def_timeout;
1023         def_thread.create_file = DEF_CREATE;
1024         def_thread.overwrite = DEF_OVERWRITE;
1025         def_thread.invalidate_cache = DEF_INVALIDATE;
1026         def_thread.sync_io = DEF_SYNCIO;
1027         def_thread.mem_type = MEM_MALLOC;
1028         def_thread.bw_avg_time = DEF_BWAVGTIME;
1029         def_thread.create_serialize = DEF_CREATE_SER;
1030         def_thread.create_fsync = DEF_CREATE_FSYNC;
1031         def_thread.loops = DEF_LOOPS;
1032         def_thread.verify = DEF_VERIFY;
1033         def_thread.stonewall = DEF_STONEWALL;
1034         def_thread.numjobs = DEF_NUMJOBS;
1035         def_thread.use_thread = DEF_USE_THREAD;
1036         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1037         def_thread.rwmixread = DEF_RWMIX_READ;
1038         def_thread.nice = DEF_NICE;
1039         def_thread.rand_repeatable = DEF_RAND_REPEAT;
1040         def_thread.nr_files = DEF_NR_FILES;
1041 #ifdef FIO_HAVE_DISK_UTIL
1042         def_thread.do_disk_util = 1;
1043 #endif
1044
1045         return 0;
1046 }
1047
1048 static void usage(char *name)
1049 {
1050         printf("%s\n", fio_version_string);
1051         printf("\t-o Write output to file\n");
1052         printf("\t-t Runtime in seconds\n");
1053         printf("\t-l Generate per-job latency logs\n");
1054         printf("\t-w Generate per-job bandwidth logs\n");
1055         printf("\t-m Minimal (terse) output\n");
1056         printf("\t-v Print version info and exit\n");
1057 }
1058
1059 static int parse_cmd_line(int argc, char *argv[])
1060 {
1061         int c, idx = 1, ini_idx = 0;
1062
1063         while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1064                 switch (c) {
1065                         case 't':
1066                                 def_timeout = atoi(optarg);
1067                                 idx = optind;
1068                                 break;
1069                         case 'l':
1070                                 write_lat_log = 1;
1071                                 idx = optind;
1072                                 break;
1073                         case 'w':
1074                                 write_bw_log = 1;
1075                                 idx = optind;
1076                                 break;
1077                         case 'o':
1078                                 f_out = fopen(optarg, "w+");
1079                                 if (!f_out) {
1080                                         perror("fopen output");
1081                                         exit(1);
1082                                 }
1083                                 f_err = f_out;
1084                                 idx = optind;
1085                                 break;
1086                         case 'm':
1087                                 terse_output = 1;
1088                                 idx = optind;
1089                                 break;
1090                         case 'h':
1091                                 usage(argv[0]);
1092                                 exit(0);
1093                         case 'v':
1094                                 printf("%s\n", fio_version_string);
1095                                 exit(0);
1096                 }
1097         }
1098
1099         while (idx < argc) {
1100                 ini_idx++;
1101                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1102                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1103                 idx++;
1104         }
1105
1106         if (!f_out) {
1107                 f_out = stdout;
1108                 f_err = stderr;
1109         }
1110
1111         return ini_idx;
1112 }
1113
1114 static void free_shm(void)
1115 {
1116         struct shmid_ds sbuf;
1117
1118         if (threads) {
1119                 shmdt((void *) threads);
1120                 threads = NULL;
1121                 shmctl(shm_id, IPC_RMID, &sbuf);
1122         }
1123 }
1124
1125 /*
1126  * The thread area is shared between the main process and the job
1127  * threads/processes. So setup a shared memory segment that will hold
1128  * all the job info.
1129  */
1130 static int setup_thread_area(void)
1131 {
1132         /*
1133          * 1024 is too much on some machines, scale max_jobs if
1134          * we get a failure that looks like too large a shm segment
1135          */
1136         do {
1137                 size_t size = max_jobs * sizeof(struct thread_data);
1138
1139                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1140                 if (shm_id != -1)
1141                         break;
1142                 if (errno != EINVAL) {
1143                         perror("shmget");
1144                         break;
1145                 }
1146
1147                 max_jobs >>= 1;
1148         } while (max_jobs);
1149
1150         if (shm_id == -1)
1151                 return 1;
1152
1153         threads = shmat(shm_id, NULL, 0);
1154         if (threads == (void *) -1) {
1155                 perror("shmat");
1156                 return 1;
1157         }
1158
1159         atexit(free_shm);
1160         return 0;
1161 }
1162
1163 int parse_options(int argc, char *argv[])
1164 {
1165         int job_files, i;
1166
1167         if (setup_thread_area())
1168                 return 1;
1169         if (fill_def_thread())
1170                 return 1;
1171
1172         job_files = parse_cmd_line(argc, argv);
1173         if (!job_files) {
1174                 log_err("Need job file(s)\n");
1175                 usage(argv[0]);
1176                 return 1;
1177         }
1178
1179         for (i = 0; i < job_files; i++) {
1180                 if (fill_def_thread())
1181                         return 1;
1182                 if (parse_jobs_ini(ini_file[i], i))
1183                         return 1;
1184                 free(ini_file[i]);
1185         }
1186
1187         free(ini_file);
1188         return 0;
1189 }