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 #define DEF_UNLINK              (0)
  51
  52 static int def_timeout = DEF_TIMEOUT;
  53
  54 static char fio_version_string[] = "fio 1.5";
  55
  56 static char **ini_file;
  57 static int max_jobs = MAX_JOBS;
  58
  59 struct thread_data def_thread;
  60 struct thread_data *threads = NULL;
  61
  62 int rate_quit = 0;
  63 int write_lat_log = 0;
  64 int write_bw_log = 0;
  65 int exitall_on_terminate = 0;
  66 int terse_output = 0;
  67 unsigned long long mlock_size = 0;
  68 FILE *f_out = NULL;
  69 FILE *f_err = NULL;
  70
  71 /*
  72  * Return a free job structure.
  73  */
  74 static struct thread_data *get_new_job(int global, struct thread_data *parent)
  75 {
  76         struct thread_data *td;
  77
  78         if (global)
  79                 return &def_thread;
  80         if (thread_number >= max_jobs)
  81                 return NULL;
  82
  83         td = &threads[thread_number++];
  84         *td = *parent;
  85         td->name[0] = '\0';
  86
  87         td->thread_number = thread_number;
  88         return td;
  89 }
  90
  91 static void put_job(struct thread_data *td)
  92 {
  93         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
  94         thread_number--;
  95 }
  96
  97 /*
  98  * Adds a job to the list of things todo. Sanitizes the various options
  99  * to make sure we don't have conflicts, and initializes various
 100  * members of td.
 101  */
 102 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 103 {
 104         char *ddir_str[] = { "read", "write", "randread", "randwrite",
 105                              "rw", NULL, "randrw" };
 106         struct stat sb;
 107         int numjobs, ddir, i;
 108         struct fio_file *f;
 109
 110 #ifndef FIO_HAVE_LIBAIO
 111         if (td->io_engine == FIO_LIBAIO) {
 112                 log_err("Linux libaio not available\n");
 113                 return 1;
 114         }
 115 #endif
 116 #ifndef FIO_HAVE_POSIXAIO
 117         if (td->io_engine == FIO_POSIXAIO) {
 118                 log_err("posix aio not available\n");
 119                 return 1;
 120         }
 121 #endif
 122
 123         /*
 124          * the def_thread is just for options, it's not a real job
 125          */
 126         if (td == &def_thread)
 127                 return 0;
 128
 129         /*
 130          * Set default io engine, if none set
 131          */
 132         if (!td->io_ops) {
 133                 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
 134                 if (!td->io_ops) {
 135                         log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
 136                         return 1;
 137                 }
 138         }
 139
 140         if (td->io_ops->flags & FIO_SYNCIO)
 141                 td->iodepth = 1;
 142         else {
 143                 if (!td->iodepth)
 144                         td->iodepth = 1;
 145         }
 146
 147         /*
 148          * only really works for sequential io for now, and with 1 file
 149          */
 150         if (td->zone_size && !td->sequential && td->nr_files == 1)
 151                 td->zone_size = 0;
 152
 153         /*
 154          * Reads can do overwrites, we always need to pre-create the file
 155          */
 156         if (td_read(td) || td_rw(td))
 157                 td->overwrite = 1;
 158
 159         td->filetype = FIO_TYPE_FILE;
 160         if (!stat(jobname, &sb)) {
 161                 if (S_ISBLK(sb.st_mode))
 162                         td->filetype = FIO_TYPE_BD;
 163                 else if (S_ISCHR(sb.st_mode))
 164                         td->filetype = FIO_TYPE_CHAR;
 165         }
 166
 167         if (td->odirect)
 168                 td->io_ops->flags |= FIO_RAWIO;
 169
 170         if (td->filetype == FIO_TYPE_FILE) {
 171                 char tmp[PATH_MAX];
 172                 int len = 0;
 173                 int i;
 174
 175                 if (td->directory && td->directory[0] != '\0')
 176                         sprintf(tmp, "%s/", td->directory);
 177
 178                 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
 179
 180                 for_each_file(td, f, i) {
 181                         memset(f, 0, sizeof(*f));
 182                         f->fd = -1;
 183                         f->fileno = i;
 184
 185                         sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
 186                         f->file_name = strdup(tmp);
 187                 }
 188         } else {
 189                 td->nr_files = 1;
 190                 td->files = malloc(sizeof(struct fio_file));
 191                 f = &td->files[0];
 192
 193                 memset(f, 0, sizeof(*f));
 194                 f->fd = -1;
 195                 f->file_name = strdup(jobname);
 196         }
 197
 198         for_each_file(td, f, i) {
 199                 f->file_size = td->total_file_size / td->nr_files;
 200                 f->file_offset = td->start_offset;
 201         }
 202
 203         fio_sem_init(&td->mutex, 0);
 204
 205         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
 206         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
 207         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
 208
 209         if (td->min_bs == -1U)
 210                 td->min_bs = td->bs;
 211         if (td->max_bs == -1U)
 212                 td->max_bs = td->bs;
 213         if (td_read(td) && !td_rw(td))
 214                 td->verify = 0;
 215
 216         if (td->stonewall && td->thread_number > 1)
 217                 groupid++;
 218
 219         td->groupid = groupid;
 220
 221         if (setup_rate(td))
 222                 goto err;
 223
 224         if (write_lat_log) {
 225                 setup_log(&td->slat_log);
 226                 setup_log(&td->clat_log);
 227         }
 228         if (write_bw_log)
 229                 setup_log(&td->bw_log);
 230
 231         if (td->name[0] == '\0')
 232                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
 233
 234         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 235
 236         if (!terse_output) {
 237                 if (!job_add_num) {
 238                         if (td->io_ops->flags & FIO_CPUIO)
 239                                 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
 240                         else
 241                                 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);
 242                 } else if (job_add_num == 1)
 243                         fprintf(f_out, "...\n");
 244         }
 245
 246         /*
 247          * recurse add identical jobs, clear numjobs and stonewall options
 248          * as they don't apply to sub-jobs
 249          */
 250         numjobs = td->numjobs;
 251         while (--numjobs) {
 252                 struct thread_data *td_new = get_new_job(0, td);
 253
 254                 if (!td_new)
 255                         goto err;
 256
 257                 td_new->numjobs = 1;
 258                 td_new->stonewall = 0;
 259                 job_add_num = numjobs - 1;
 260
 261                 if (add_job(td_new, jobname, job_add_num))
 262                         goto err;
 263         }
 264         return 0;
 265 err:
 266         put_job(td);
 267         return -1;
 268 }
 269
 270 /*
 271  * Initialize the various random states we need (random io, block size ranges,
 272  * read/write mix, etc).
 273  */
 274 int init_random_state(struct thread_data *td)
 275 {
 276         unsigned long seeds[4];
 277         int fd, num_maps, blocks, i;
 278         struct fio_file *f;
 279
 280         fd = open("/dev/urandom", O_RDONLY);
 281         if (fd == -1) {
 282                 td_verror(td, errno);
 283                 return 1;
 284         }
 285
 286         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 287                 td_verror(td, EIO);
 288                 close(fd);
 289                 return 1;
 290         }
 291
 292         close(fd);
 293
 294         os_random_seed(seeds[0], &td->bsrange_state);
 295         os_random_seed(seeds[1], &td->verify_state);
 296         os_random_seed(seeds[2], &td->rwmix_state);
 297
 298         if (td->sequential)
 299                 return 0;
 300
 301         if (td->rand_repeatable)
 302                 seeds[3] = DEF_RANDSEED;
 303
 304         for_each_file(td, f, i) {
 305                 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
 306                 num_maps = blocks / BLOCKS_PER_MAP;
 307                 f->file_map = malloc(num_maps * sizeof(long));
 308                 f->num_maps = num_maps;
 309                 memset(f->file_map, 0, num_maps * sizeof(long));
 310         }
 311
 312         os_random_seed(seeds[3], &td->random_state);
 313         return 0;
 314 }
 315
 316 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 317 {
 318 #ifdef FIO_HAVE_CPU_AFFINITY
 319         unsigned int i;
 320
 321         CPU_ZERO(&cpumask);
 322
 323         for (i = 0; i < sizeof(int) * 8; i++) {
 324                 if ((1 << i) & cpu)
 325                         CPU_SET(i, &cpumask);
 326         }
 327 #endif
 328 }
 329
 330 static unsigned long get_mult_time(char c)
 331 {
 332         switch (c) {
 333                 case 'm':
 334                 case 'M':
 335                         return 60;
 336                 case 'h':
 337                 case 'H':
 338                         return 60 * 60;
 339                 case 'd':
 340                 case 'D':
 341                         return 24 * 60 * 60;
 342                 default:
 343                         return 1;
 344         }
 345 }
 346
 347 static unsigned long get_mult_bytes(char c)
 348 {
 349         switch (c) {
 350                 case 'k':
 351                 case 'K':
 352                         return 1024;
 353                 case 'm':
 354                 case 'M':
 355                         return 1024 * 1024;
 356                 case 'g':
 357                 case 'G':
 358                         return 1024 * 1024 * 1024;
 359                 default:
 360                         return 1;
 361         }
 362 }
 363
 364 /*
 365  * convert string after '=' into decimal value, noting any size suffix
 366  */
 367 static int str_to_decimal(char *p, unsigned long long *val, int kilo)
 368 {
 369         char *str;
 370         int len;
 371
 372         str = strchr(p, '=');
 373         if (!str)
 374                 return 1;
 375
 376         str++;
 377         len = strlen(str);
 378
 379         *val = strtoul(str, NULL, 10);
 380         if (*val == ULONG_MAX && errno == ERANGE)
 381                 return 1;
 382
 383         if (kilo)
 384                 *val *= get_mult_bytes(str[len - 1]);
 385         else
 386                 *val *= get_mult_time(str[len - 1]);
 387         return 0;
 388 }
 389
 390 static int check_str_bytes(char *p, char *name, unsigned long long *val)
 391 {
 392         if (strncmp(p, name, strlen(name) - 1))
 393                 return 1;
 394
 395         return str_to_decimal(p, val, 1);
 396 }
 397
 398 static int check_str_time(char *p, char *name, unsigned long long *val)
 399 {
 400         if (strncmp(p, name, strlen(name) - 1))
 401                 return 1;
 402
 403         return str_to_decimal(p, val, 0);
 404 }
 405
 406 static void strip_blank_front(char **p)
 407 {
 408         char *s = *p;
 409
 410         while (isspace(*s))
 411                 s++;
 412 }
 413
 414 static void strip_blank_end(char *p)
 415 {
 416         char *s = p + strlen(p) - 1;
 417
 418         while (isspace(*s) || iscntrl(*s))
 419                 s--;
 420
 421         *(s + 1) = '\0';
 422 }
 423
 424 typedef int (str_cb_fn)(struct thread_data *, char *);
 425
 426 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 427 {
 428         char *s;
 429
 430         if (strncmp(p, name, strlen(name)))
 431                 return 1;
 432
 433         s = strstr(p, name);
 434         if (!s)
 435                 return 1;
 436
 437         s = strchr(s, '=');
 438         if (!s)
 439                 return 1;
 440
 441         s++;
 442         strip_blank_front(&s);
 443         return cb(td, s);
 444 }
 445
 446 static int check_strstore(char *p, char *name, char *dest)
 447 {
 448         char *s;
 449
 450         if (strncmp(p, name, strlen(name)))
 451                 return 1;
 452
 453         s = strstr(p, name);
 454         if (!s)
 455                 return 1;
 456
 457         s = strchr(p, '=');
 458         if (!s)
 459                 return 1;
 460
 461         s++;
 462         strip_blank_front(&s);
 463
 464         strcpy(dest, s);
 465         return 0;
 466 }
 467
 468 static int __check_range_bytes(char *str, unsigned long *val)
 469 {
 470         char suffix;
 471
 472         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 473                 *val *= get_mult_bytes(suffix);
 474                 return 0;
 475         }
 476
 477         if (sscanf(str, "%lu", val) == 1)
 478                 return 0;
 479
 480         return 1;
 481 }
 482
 483 static int check_range_bytes(char *p, char *name, unsigned long *s,
 484                              unsigned long *e)
 485 {
 486         char option[128];
 487         char *str, *p1, *p2;
 488
 489         if (strncmp(p, name, strlen(name)))
 490                 return 1;
 491
 492         strcpy(option, p);
 493         p = option;
 494
 495         str = strstr(p, name);
 496         if (!str)
 497                 return 1;
 498
 499         p += strlen(name);
 500
 501         str = strchr(p, '=');
 502         if (!str)
 503                 return 1;
 504
 505         /*
 506          * 'p' now holds whatever is after the '=' sign
 507          */
 508         p1 = str + 1;
 509
 510         /*
 511          * terminate p1 at the '-' sign
 512          */
 513         p = strchr(p1, '-');
 514         if (!p)
 515                 return 1;
 516
 517         p2 = p + 1;
 518         *p = '\0';
 519
 520         if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
 521                 return 0;
 522
 523         return 1;
 524 }
 525
 526 static int check_int(char *p, char *name, unsigned int *val)
 527 {
 528         char *str;
 529
 530         if (strncmp(p, name, strlen(name)))
 531                 return 1;
 532
 533         str = strstr(p, name);
 534         if (!str)
 535                 return 1;
 536
 537         str = strchr(p, '=');
 538         if (!str)
 539                 return 1;
 540
 541         str++;
 542
 543         if (sscanf(str, "%u", val) == 1)
 544                 return 0;
 545
 546         return 1;
 547 }
 548
 549 static int check_strset(char *p, char *name)
 550 {
 551         return strncmp(p, name, strlen(name));
 552 }
 553
 554 static int is_empty_or_comment(char *line)
 555 {
 556         unsigned int i;
 557
 558         for (i = 0; i < strlen(line); i++) {
 559                 if (line[i] == ';')
 560                         return 1;
 561                 if (!isspace(line[i]) && !iscntrl(line[i]))
 562                         return 0;
 563         }
 564
 565         return 1;
 566 }
 567
 568 static int str_rw_cb(struct thread_data *td, char *mem)
 569 {
 570         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 571                 td->ddir = DDIR_READ;
 572                 td->sequential = 1;
 573                 return 0;
 574         } else if (!strncmp(mem, "randread", 8)) {
 575                 td->ddir = DDIR_READ;
 576                 td->sequential = 0;
 577                 return 0;
 578         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 579                 td->ddir = DDIR_WRITE;
 580                 td->sequential = 1;
 581                 return 0;
 582         } else if (!strncmp(mem, "randwrite", 9)) {
 583                 td->ddir = DDIR_WRITE;
 584                 td->sequential = 0;
 585                 return 0;
 586         } else if (!strncmp(mem, "rw", 2)) {
 587                 td->ddir = 0;
 588                 td->iomix = 1;
 589                 td->sequential = 1;
 590                 return 0;
 591         } else if (!strncmp(mem, "randrw", 6)) {
 592                 td->ddir = 0;
 593                 td->iomix = 1;
 594                 td->sequential = 0;
 595                 return 0;
 596         }
 597
 598         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 599         return 1;
 600 }
 601
 602 static int str_verify_cb(struct thread_data *td, char *mem)
 603 {
 604         if (!strncmp(mem, "0", 1)) {
 605                 td->verify = VERIFY_NONE;
 606                 return 0;
 607         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 608                 td->verify = VERIFY_MD5;
 609                 return 0;
 610         } else if (!strncmp(mem, "crc32", 5)) {
 611                 td->verify = VERIFY_CRC32;
 612                 return 0;
 613         }
 614
 615         log_err("fio: verify types: md5, crc32\n");
 616         return 1;
 617 }
 618
 619 static int str_mem_cb(struct thread_data *td, char *mem)
 620 {
 621         if (!strncmp(mem, "malloc", 6)) {
 622                 td->mem_type = MEM_MALLOC;
 623                 return 0;
 624         } else if (!strncmp(mem, "shm", 3)) {
 625                 td->mem_type = MEM_SHM;
 626                 return 0;
 627         } else if (!strncmp(mem, "mmap", 4)) {
 628                 td->mem_type = MEM_MMAP;
 629                 return 0;
 630         }
 631
 632         log_err("fio: mem type: malloc, shm, mmap\n");
 633         return 1;
 634 }
 635
 636 static int str_ioengine_cb(struct thread_data *td, char *str)
 637 {
 638         td->io_ops = load_ioengine(td, str);
 639         if (td->io_ops)
 640                 return 0;
 641
 642         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
 643         return 1;
 644 }
 645
 646 /*
 647  * This is our [ini] type file parser.
 648  */
 649 int parse_jobs_ini(char *file, int stonewall_flag)
 650 {
 651         unsigned int prioclass, prio, cpu, global, il;
 652         unsigned long long ull;
 653         unsigned long ul1, ul2;
 654         struct thread_data *td;
 655         char *string, *name, *tmpbuf;
 656         fpos_t off;
 657         FILE *f;
 658         char *p;
 659         int ret = 0, stonewall;
 660
 661         f = fopen(file, "r");
 662         if (!f) {
 663                 perror("fopen job file");
 664                 return 1;
 665         }
 666
 667         string = malloc(4096);
 668         name = malloc(256);
 669         tmpbuf = malloc(4096);
 670
 671         stonewall = stonewall_flag;
 672         while ((p = fgets(string, 4096, f)) != NULL) {
 673                 if (ret)
 674                         break;
 675                 if (is_empty_or_comment(p))
 676                         continue;
 677                 if (sscanf(p, "[%s]", name) != 1)
 678                         continue;
 679
 680                 global = !strncmp(name, "global", 6);
 681
 682                 name[strlen(name) - 1] = '\0';
 683
 684                 td = get_new_job(global, &def_thread);
 685                 if (!td) {
 686                         ret = 1;
 687                         break;
 688                 }
 689
 690                 /*
 691                  * Seperate multiple job files by a stonewall
 692                  */
 693                 if (!global && stonewall) {
 694                         td->stonewall = stonewall;
 695                         stonewall = 0;
 696                 }
 697
 698                 fgetpos(f, &off);
 699                 while ((p = fgets(string, 4096, f)) != NULL) {
 700                         if (is_empty_or_comment(p))
 701                                 continue;
 702                         if (strstr(p, "["))
 703                                 break;
 704                         strip_blank_front(&p);
 705                         strip_blank_end(p);
 706
 707                         if (!check_int(p, "prio", &prio)) {
 708 #ifndef FIO_HAVE_IOPRIO
 709                                 log_err("io priorities not available\n");
 710                                 ret = 1;
 711                                 break;
 712 #endif
 713                                 td->ioprio |= prio;
 714                                 fgetpos(f, &off);
 715                                 continue;
 716                         }
 717                         if (!check_int(p, "prioclass", &prioclass)) {
 718 #ifndef FIO_HAVE_IOPRIO
 719                                 log_err("io priorities not available\n");
 720                                 ret = 1;
 721                                 break;
 722 #else
 723                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 724                                 fgetpos(f, &off);
 725                                 continue;
 726 #endif
 727                         }
 728                         if (!check_int(p, "direct", &il)) {
 729                                 td->odirect = il;
 730                                 fgetpos(f, &off);
 731                                 continue;
 732                         }
 733                         if (!check_int(p, "rand_repeatable", &il)) {
 734                                 td->rand_repeatable = il;
 735                                 fgetpos(f, &off);
 736                                 continue;
 737                         }
 738                         if (!check_int(p, "rate", &td->rate)) {
 739                                 fgetpos(f, &off);
 740                                 continue;
 741                         }
 742                         if (!check_int(p, "ratemin", &td->ratemin)) {
 743                                 fgetpos(f, &off);
 744                                 continue;
 745                         }
 746                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 747                                 fgetpos(f, &off);
 748                                 continue;
 749                         }
 750                         if (!check_int(p, "cpuload", &td->cpuload)) {
 751                                 fgetpos(f, &off);
 752                                 continue;
 753                         }
 754                         if (!check_int(p, "cpuchunks", &td->cpucycle)) {
 755                                 fgetpos(f, &off);
 756                                 continue;
 757                         }
 758                         if (!check_int(p, "thinktime", &td->thinktime)) {
 759                                 fgetpos(f, &off);
 760                                 continue;
 761                         }
 762                         if (!check_int(p, "cpumask", &cpu)) {
 763 #ifndef FIO_HAVE_CPU_AFFINITY
 764                                 log_err("cpu affinity not available\n");
 765                                 ret = 1;
 766                                 break;
 767 #endif
 768                                 fill_cpu_mask(td->cpumask, cpu);
 769                                 fgetpos(f, &off);
 770                                 continue;
 771                         }
 772                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 773                                 fgetpos(f, &off);
 774                                 td->end_fsync = 1;
 775                                 continue;
 776                         }
 777                         if (!check_int(p, "startdelay", &td->start_delay)) {
 778                                 fgetpos(f, &off);
 779                                 continue;
 780                         }
 781                         if (!check_str_time(p, "timeout", &ull)) {
 782                                 td->timeout = ull;
 783                                 fgetpos(f, &off);
 784                                 continue;
 785                         }
 786                         if (!check_int(p, "invalidate", &il)) {
 787                                 td->invalidate_cache = il;
 788                                 fgetpos(f, &off);
 789                                 continue;
 790                         }
 791                         if (!check_int(p, "iodepth", &td->iodepth)) {
 792                                 fgetpos(f, &off);
 793                                 continue;
 794                         }
 795                         if (!check_int(p, "sync", &il)) {
 796                                 td->sync_io = il;
 797                                 fgetpos(f, &off);
 798                                 continue;
 799                         }
 800                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 801                                 fgetpos(f, &off);
 802                                 continue;
 803                         }
 804                         if (!check_int(p, "create_serialize", &il)) {
 805                                 td->create_serialize = il;
 806                                 fgetpos(f, &off);
 807                                 continue;
 808                         }
 809                         if (!check_int(p, "create_fsync", &il)) {
 810                                 td->create_fsync = il;
 811                                 fgetpos(f, &off);
 812                                 continue;
 813                         }
 814                         if (!check_int(p, "end_fsync", &il)) {
 815                                 td->end_fsync = il;
 816                                 fgetpos(f, &off);
 817                                 continue;
 818                         }
 819                         if (!check_int(p, "loops", &td->loops)) {
 820                                 fgetpos(f, &off);
 821                                 continue;
 822                         }
 823                         if (!check_int(p, "numjobs", &td->numjobs)) {
 824                                 fgetpos(f, &off);
 825                                 continue;
 826                         }
 827                         if (!check_int(p, "overwrite", &il)) {
 828                                 td->overwrite = il;
 829                                 fgetpos(f, &off);
 830                                 continue;
 831                         }
 832                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 833                                 fgetpos(f, &off);
 834                                 continue;
 835                         }
 836                         if (!check_int(p, "rwmixread", &il)) {
 837                                 if (il > 100)
 838                                         il = 100;
 839                                 td->rwmixread = il;
 840                                 fgetpos(f, &off);
 841                                 continue;
 842                         }
 843                         if (!check_int(p, "rwmixwrite", &il)) {
 844                                 if (il > 100)
 845                                         il = 100;
 846                                 td->rwmixread = 100 - il;
 847                                 fgetpos(f, &off);
 848                                 continue;
 849                         }
 850                         if (!check_int(p, "nice", &td->nice)) {
 851                                 fgetpos(f, &off);
 852                                 continue;
 853                         }
 854                         if (!check_int(p, "nrfiles", &td->nr_files)) {
 855                                 fgetpos(f, &off);
 856                                 continue;
 857                         }
 858                         if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
 859                                 if (ul1 > ul2) {
 860                                         td->max_bs = ul1;
 861                                         td->min_bs = ul2;
 862                                 } else {
 863                                         td->max_bs = ul2;
 864                                         td->min_bs = ul1;
 865                                 }
 866                                 fgetpos(f, &off);
 867                                 continue;
 868                         }
 869                         if (!check_str_bytes(p, "bs", &ull)) {
 870                                 td->bs = ull;
 871                                 fgetpos(f, &off);
 872                                 continue;
 873                         }
 874                         if (!check_str_bytes(p, "size", &td->total_file_size)) {
 875                                 fgetpos(f, &off);
 876                                 continue;
 877                         }
 878                         if (!check_str_bytes(p, "offset", &td->start_offset)) {
 879                                 fgetpos(f, &off);
 880                                 continue;
 881                         }
 882                         if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
 883                                 fgetpos(f, &off);
 884                                 continue;
 885                         }
 886                         if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
 887                                 fgetpos(f, &off);
 888                                 continue;
 889                         }
 890                         if (!check_str_bytes(p, "lockmem", &mlock_size)) {
 891                                 fgetpos(f, &off);
 892                                 continue;
 893                         }
 894                         if (!check_strstore(p, "directory", tmpbuf)) {
 895                                 td->directory = strdup(tmpbuf);
 896                                 fgetpos(f, &off);
 897                                 continue;
 898                         }
 899                         if (!check_strstore(p, "name", tmpbuf)) {
 900                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 901                                 fgetpos(f, &off);
 902                                 continue;
 903                         }
 904                         if (!check_str(p, "mem", str_mem_cb, td)) {
 905                                 fgetpos(f, &off);
 906                                 continue;
 907                         }
 908                         if (!check_str(p, "verify", str_verify_cb, td)) {
 909                                 fgetpos(f, &off);
 910                                 continue;
 911                         }
 912                         if (!check_str(p, "rw", str_rw_cb, td)) {
 913                                 fgetpos(f, &off);
 914                                 continue;
 915                         }
 916                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 917                                 fgetpos(f, &off);
 918                                 continue;
 919                         }
 920                         if (!check_strset(p, "create")) {
 921                                 td->create_file = 1;
 922                                 fgetpos(f, &off);
 923                                 continue;
 924                         }
 925                         if (!check_strset(p, "exitall")) {
 926                                 exitall_on_terminate = 1;
 927                                 fgetpos(f, &off);
 928                                 continue;
 929                         }
 930                         if (!check_strset(p, "stonewall")) {
 931                                 td->stonewall = 1;
 932                                 fgetpos(f, &off);
 933                                 continue;
 934                         }
 935                         if (!check_strset(p, "thread")) {
 936                                 td->use_thread = 1;
 937                                 fgetpos(f, &off);
 938                                 continue;
 939                         }
 940                         if (!check_strset(p, "unlink")) {
 941                                 td->unlink = 1;
 942                                 fgetpos(f, &off);
 943                                 continue;
 944                         }
 945                         if (!check_strstore(p, "iolog", tmpbuf)) {
 946                                 if (td->write_iolog) {
 947                                         log_err("fio: read iolog overrides given write_iolog\n");
 948                                         free(td->iolog_file);
 949                                         td->write_iolog = 0;
 950                                 }
 951                                 td->iolog_file = strdup(tmpbuf);
 952                                 td->read_iolog = 1;
 953                                 fgetpos(f, &off);
 954                                 continue;
 955                         }
 956                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 957                                 if (!td->read_iolog) {
 958                                         td->iolog_file = strdup(tmpbuf);
 959                                         td->write_iolog = 1;
 960                                 } else
 961                                         log_err("fio: read iolog overrides given write_iolog\n");
 962                                 fgetpos(f, &off);
 963                                 continue;
 964                         }
 965                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 966                                 td->exec_prerun = strdup(tmpbuf);
 967                                 fgetpos(f, &off);
 968                                 continue;
 969                         }
 970                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 971                                 td->exec_postrun = strdup(tmpbuf);
 972                                 fgetpos(f, &off);
 973                                 continue;
 974                         }
 975                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 976 #ifndef FIO_HAVE_IOSCHED_SWITCH
 977                                 log_err("io scheduler switching not available\n");
 978                                 ret = 1;
 979                                 break;
 980 #else
 981                                 td->ioscheduler = strdup(tmpbuf);
 982                                 fgetpos(f, &off);
 983                                 continue;
 984 #endif
 985                         }
 986
 987                         /*
 988                          * Don't break here, continue parsing options so we
 989                          * dump all the bad ones. Makes trial/error fixups
 990                          * easier on the user.
 991                          */
 992                         printf("Client%d: bad option %s\n",td->thread_number,p);
 993                         ret = 1;
 994                 }
 995
 996                 if (!ret) {
 997                         fsetpos(f, &off);
 998                         ret = add_job(td, name, 0);
 999                 }
1000                 if (ret)
1001                         break;
1002         }
1003
1004         free(string);
1005         free(name);
1006         free(tmpbuf);
1007         fclose(f);
1008         return ret;
1009 }
1010
1011 static int fill_def_thread(void)
1012 {
1013         memset(&def_thread, 0, sizeof(def_thread));
1014
1015         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1016                 perror("sched_getaffinity");
1017                 return 1;
1018         }
1019
1020         /*
1021          * fill globals
1022          */
1023         def_thread.ddir = DDIR_READ;
1024         def_thread.iomix = 0;
1025         def_thread.bs = DEF_BS;
1026         def_thread.min_bs = -1;
1027         def_thread.max_bs = -1;
1028         def_thread.odirect = DEF_ODIRECT;
1029         def_thread.ratecycle = DEF_RATE_CYCLE;
1030         def_thread.sequential = DEF_SEQUENTIAL;
1031         def_thread.timeout = def_timeout;
1032         def_thread.create_file = DEF_CREATE;
1033         def_thread.overwrite = DEF_OVERWRITE;
1034         def_thread.invalidate_cache = DEF_INVALIDATE;
1035         def_thread.sync_io = DEF_SYNCIO;
1036         def_thread.mem_type = MEM_MALLOC;
1037         def_thread.bw_avg_time = DEF_BWAVGTIME;
1038         def_thread.create_serialize = DEF_CREATE_SER;
1039         def_thread.create_fsync = DEF_CREATE_FSYNC;
1040         def_thread.loops = DEF_LOOPS;
1041         def_thread.verify = DEF_VERIFY;
1042         def_thread.stonewall = DEF_STONEWALL;
1043         def_thread.numjobs = DEF_NUMJOBS;
1044         def_thread.use_thread = DEF_USE_THREAD;
1045         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1046         def_thread.rwmixread = DEF_RWMIX_READ;
1047         def_thread.nice = DEF_NICE;
1048         def_thread.rand_repeatable = DEF_RAND_REPEAT;
1049         def_thread.nr_files = DEF_NR_FILES;
1050         def_thread.unlink = DEF_UNLINK;
1051 #ifdef FIO_HAVE_DISK_UTIL
1052         def_thread.do_disk_util = 1;
1053 #endif
1054
1055         return 0;
1056 }
1057
1058 static void usage(void)
1059 {
1060         printf("%s\n", fio_version_string);
1061         printf("\t-o Write output to file\n");
1062         printf("\t-t Runtime in seconds\n");
1063         printf("\t-l Generate per-job latency logs\n");
1064         printf("\t-w Generate per-job bandwidth logs\n");
1065         printf("\t-m Minimal (terse) output\n");
1066         printf("\t-v Print version info and exit\n");
1067 }
1068
1069 static int parse_cmd_line(int argc, char *argv[])
1070 {
1071         int c, idx = 1, ini_idx = 0;
1072
1073         while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1074                 switch (c) {
1075                         case 't':
1076                                 def_timeout = atoi(optarg);
1077                                 idx = optind;
1078                                 break;
1079                         case 'l':
1080                                 write_lat_log = 1;
1081                                 idx = optind;
1082                                 break;
1083                         case 'w':
1084                                 write_bw_log = 1;
1085                                 idx = optind;
1086                                 break;
1087                         case 'o':
1088                                 f_out = fopen(optarg, "w+");
1089                                 if (!f_out) {
1090                                         perror("fopen output");
1091                                         exit(1);
1092                                 }
1093                                 f_err = f_out;
1094                                 idx = optind;
1095                                 break;
1096                         case 'm':
1097                                 terse_output = 1;
1098                                 idx = optind;
1099                                 break;
1100                         case 'h':
1101                                 usage();
1102                                 exit(0);
1103                         case 'v':
1104                                 printf("%s\n", fio_version_string);
1105                                 exit(0);
1106                 }
1107         }
1108
1109         while (idx < argc) {
1110                 ini_idx++;
1111                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1112                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1113                 idx++;
1114         }
1115
1116         if (!f_out) {
1117                 f_out = stdout;
1118                 f_err = stderr;
1119         }
1120
1121         return ini_idx;
1122 }
1123
1124 static void free_shm(void)
1125 {
1126         struct shmid_ds sbuf;
1127
1128         if (threads) {
1129                 shmdt((void *) threads);
1130                 threads = NULL;
1131                 shmctl(shm_id, IPC_RMID, &sbuf);
1132         }
1133 }
1134
1135 /*
1136  * The thread area is shared between the main process and the job
1137  * threads/processes. So setup a shared memory segment that will hold
1138  * all the job info.
1139  */
1140 static int setup_thread_area(void)
1141 {
1142         /*
1143          * 1024 is too much on some machines, scale max_jobs if
1144          * we get a failure that looks like too large a shm segment
1145          */
1146         do {
1147                 size_t size = max_jobs * sizeof(struct thread_data);
1148
1149                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1150                 if (shm_id != -1)
1151                         break;
1152                 if (errno != EINVAL) {
1153                         perror("shmget");
1154                         break;
1155                 }
1156
1157                 max_jobs >>= 1;
1158         } while (max_jobs);
1159
1160         if (shm_id == -1)
1161                 return 1;
1162
1163         threads = shmat(shm_id, NULL, 0);
1164         if (threads == (void *) -1) {
1165                 perror("shmat");
1166                 return 1;
1167         }
1168
1169         atexit(free_shm);
1170         return 0;
1171 }
1172
1173 int parse_options(int argc, char *argv[])
1174 {
1175         int job_files, i;
1176
1177         if (setup_thread_area())
1178                 return 1;
1179         if (fill_def_thread())
1180                 return 1;
1181
1182         job_files = parse_cmd_line(argc, argv);
1183         if (!job_files) {
1184                 log_err("Need job file(s)\n");
1185                 usage();
1186                 return 1;
1187         }
1188
1189         for (i = 0; i < job_files; i++) {
1190                 if (fill_def_thread())
1191                         return 1;
1192                 if (parse_jobs_ini(ini_file[i], i))
1193                         return 1;
1194                 free(ini_file[i]);
1195         }
1196
1197         free(ini_file);
1198         return 0;
1199 }