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