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
 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 (i = 0; i < td->nr_files; i++) {
 304                 struct fio_file *f = &td->files[i];
 305
 306                 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
 307                 num_maps = blocks / BLOCKS_PER_MAP;
 308                 f->file_map = malloc(num_maps * sizeof(long));
 309                 f->num_maps = num_maps;
 310                 memset(f->file_map, 0, num_maps * sizeof(long));
 311         }
 312
 313         os_random_seed(seeds[3], &td->random_state);
 314         return 0;
 315 }
 316
 317 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 318 {
 319 #ifdef FIO_HAVE_CPU_AFFINITY
 320         unsigned int i;
 321
 322         CPU_ZERO(&cpumask);
 323
 324         for (i = 0; i < sizeof(int) * 8; i++) {
 325                 if ((1 << i) & cpu)
 326                         CPU_SET(i, &cpumask);
 327         }
 328 #endif
 329 }
 330
 331 static unsigned long get_mult_time(char c)
 332 {
 333         switch (c) {
 334                 case 'm':
 335                 case 'M':
 336                         return 60;
 337                 case 'h':
 338                 case 'H':
 339                         return 60 * 60;
 340                 case 'd':
 341                 case 'D':
 342                         return 24 * 60 * 60;
 343                 default:
 344                         return 1;
 345         }
 346 }
 347
 348 static unsigned long get_mult_bytes(char c)
 349 {
 350         switch (c) {
 351                 case 'k':
 352                 case 'K':
 353                         return 1024;
 354                 case 'm':
 355                 case 'M':
 356                         return 1024 * 1024;
 357                 case 'g':
 358                 case 'G':
 359                         return 1024 * 1024 * 1024;
 360                 default:
 361                         return 1;
 362         }
 363 }
 364
 365 /*
 366  * convert string after '=' into decimal value, noting any size suffix
 367  */
 368 static int str_to_decimal(char *p, unsigned long long *val, int kilo)
 369 {
 370         char *str;
 371         int len;
 372
 373         str = strchr(p, '=');
 374         if (!str)
 375                 return 1;
 376
 377         str++;
 378         len = strlen(str);
 379
 380         *val = strtoul(str, NULL, 10);
 381         if (*val == ULONG_MAX && errno == ERANGE)
 382                 return 1;
 383
 384         if (kilo)
 385                 *val *= get_mult_bytes(str[len - 1]);
 386         else
 387                 *val *= get_mult_time(str[len - 1]);
 388         return 0;
 389 }
 390
 391 static int check_str_bytes(char *p, char *name, unsigned long long *val)
 392 {
 393         if (strncmp(p, name, strlen(name) - 1))
 394                 return 1;
 395
 396         return str_to_decimal(p, val, 1);
 397 }
 398
 399 static int check_str_time(char *p, char *name, unsigned long long *val)
 400 {
 401         if (strncmp(p, name, strlen(name) - 1))
 402                 return 1;
 403
 404         return str_to_decimal(p, val, 0);
 405 }
 406
 407 static void strip_blank_front(char **p)
 408 {
 409         char *s = *p;
 410
 411         while (isspace(*s))
 412                 s++;
 413 }
 414
 415 static void strip_blank_end(char *p)
 416 {
 417         char *s = p + strlen(p) - 1;
 418
 419         while (isspace(*s) || iscntrl(*s))
 420                 s--;
 421
 422         *(s + 1) = '\0';
 423 }
 424
 425 typedef int (str_cb_fn)(struct thread_data *, char *);
 426
 427 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 428 {
 429         char *s;
 430
 431         if (strncmp(p, name, strlen(name)))
 432                 return 1;
 433
 434         s = strstr(p, name);
 435         if (!s)
 436                 return 1;
 437
 438         s = strchr(s, '=');
 439         if (!s)
 440                 return 1;
 441
 442         s++;
 443         strip_blank_front(&s);
 444         return cb(td, s);
 445 }
 446
 447 static int check_strstore(char *p, char *name, char *dest)
 448 {
 449         char *s;
 450
 451         if (strncmp(p, name, strlen(name)))
 452                 return 1;
 453
 454         s = strstr(p, name);
 455         if (!s)
 456                 return 1;
 457
 458         s = strchr(p, '=');
 459         if (!s)
 460                 return 1;
 461
 462         s++;
 463         strip_blank_front(&s);
 464
 465         strcpy(dest, s);
 466         return 0;
 467 }
 468
 469 static int __check_range_bytes(char *str, unsigned long *val)
 470 {
 471         char suffix;
 472
 473         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 474                 *val *= get_mult_bytes(suffix);
 475                 return 0;
 476         }
 477
 478         if (sscanf(str, "%lu", val) == 1)
 479                 return 0;
 480
 481         return 1;
 482 }
 483
 484 static int check_range_bytes(char *p, char *name, unsigned long *s,
 485                              unsigned long *e)
 486 {
 487         char option[128];
 488         char *str, *p1, *p2;
 489
 490         if (strncmp(p, name, strlen(name)))
 491                 return 1;
 492
 493         strcpy(option, p);
 494         p = option;
 495
 496         str = strstr(p, name);
 497         if (!str)
 498                 return 1;
 499
 500         p += strlen(name);
 501
 502         str = strchr(p, '=');
 503         if (!str)
 504                 return 1;
 505
 506         /*
 507          * 'p' now holds whatever is after the '=' sign
 508          */
 509         p1 = str + 1;
 510
 511         /*
 512          * terminate p1 at the '-' sign
 513          */
 514         p = strchr(p1, '-');
 515         if (!p)
 516                 return 1;
 517
 518         p2 = p + 1;
 519         *p = '\0';
 520
 521         if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
 522                 return 0;
 523
 524         return 1;
 525 }
 526
 527 static int check_int(char *p, char *name, unsigned int *val)
 528 {
 529         char *str;
 530
 531         if (strncmp(p, name, strlen(name)))
 532                 return 1;
 533
 534         str = strstr(p, name);
 535         if (!str)
 536                 return 1;
 537
 538         str = strchr(p, '=');
 539         if (!str)
 540                 return 1;
 541
 542         str++;
 543
 544         if (sscanf(str, "%u", val) == 1)
 545                 return 0;
 546
 547         return 1;
 548 }
 549
 550 static int check_strset(char *p, char *name)
 551 {
 552         return strncmp(p, name, strlen(name));
 553 }
 554
 555 static int is_empty_or_comment(char *line)
 556 {
 557         unsigned int i;
 558
 559         for (i = 0; i < strlen(line); i++) {
 560                 if (line[i] == ';')
 561                         return 1;
 562                 if (!isspace(line[i]) && !iscntrl(line[i]))
 563                         return 0;
 564         }
 565
 566         return 1;
 567 }
 568
 569 static int str_rw_cb(struct thread_data *td, char *mem)
 570 {
 571         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 572                 td->ddir = DDIR_READ;
 573                 td->sequential = 1;
 574                 return 0;
 575         } else if (!strncmp(mem, "randread", 8)) {
 576                 td->ddir = DDIR_READ;
 577                 td->sequential = 0;
 578                 return 0;
 579         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 580                 td->ddir = DDIR_WRITE;
 581                 td->sequential = 1;
 582                 return 0;
 583         } else if (!strncmp(mem, "randwrite", 9)) {
 584                 td->ddir = DDIR_WRITE;
 585                 td->sequential = 0;
 586                 return 0;
 587         } else if (!strncmp(mem, "rw", 2)) {
 588                 td->ddir = 0;
 589                 td->iomix = 1;
 590                 td->sequential = 1;
 591                 return 0;
 592         } else if (!strncmp(mem, "randrw", 6)) {
 593                 td->ddir = 0;
 594                 td->iomix = 1;
 595                 td->sequential = 0;
 596                 return 0;
 597         }
 598
 599         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 600         return 1;
 601 }
 602
 603 static int str_verify_cb(struct thread_data *td, char *mem)
 604 {
 605         if (!strncmp(mem, "0", 1)) {
 606                 td->verify = VERIFY_NONE;
 607                 return 0;
 608         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 609                 td->verify = VERIFY_MD5;
 610                 return 0;
 611         } else if (!strncmp(mem, "crc32", 5)) {
 612                 td->verify = VERIFY_CRC32;
 613                 return 0;
 614         }
 615
 616         log_err("fio: verify types: md5, crc32\n");
 617         return 1;
 618 }
 619
 620 static int str_mem_cb(struct thread_data *td, char *mem)
 621 {
 622         if (!strncmp(mem, "malloc", 6)) {
 623                 td->mem_type = MEM_MALLOC;
 624                 return 0;
 625         } else if (!strncmp(mem, "shm", 3)) {
 626                 td->mem_type = MEM_SHM;
 627                 return 0;
 628         } else if (!strncmp(mem, "mmap", 4)) {
 629                 td->mem_type = MEM_MMAP;
 630                 return 0;
 631         }
 632
 633         log_err("fio: mem type: malloc, shm, mmap\n");
 634         return 1;
 635 }
 636
 637 static int str_ioengine_cb(struct thread_data *td, char *str)
 638 {
 639         td->io_ops = load_ioengine(td, str);
 640         if (td->io_ops)
 641                 return 0;
 642
 643         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
 644         return 1;
 645 }
 646
 647 /*
 648  * This is our [ini] type file parser.
 649  */
 650 int parse_jobs_ini(char *file, int stonewall_flag)
 651 {
 652         unsigned int prioclass, prio, cpu, global, il;
 653         unsigned long long ull;
 654         unsigned long ul1, ul2;
 655         struct thread_data *td;
 656         char *string, *name, *tmpbuf;
 657         fpos_t off;
 658         FILE *f;
 659         char *p;
 660         int ret = 0, stonewall;
 661
 662         f = fopen(file, "r");
 663         if (!f) {
 664                 perror("fopen job file");
 665                 return 1;
 666         }
 667
 668         string = malloc(4096);
 669         name = malloc(256);
 670         tmpbuf = malloc(4096);
 671
 672         stonewall = stonewall_flag;
 673         while ((p = fgets(string, 4096, f)) != NULL) {
 674                 if (ret)
 675                         break;
 676                 if (is_empty_or_comment(p))
 677                         continue;
 678                 if (sscanf(p, "[%s]", name) != 1)
 679                         continue;
 680
 681                 global = !strncmp(name, "global", 6);
 682
 683                 name[strlen(name) - 1] = '\0';
 684
 685                 td = get_new_job(global, &def_thread);
 686                 if (!td) {
 687                         ret = 1;
 688                         break;
 689                 }
 690
 691                 /*
 692                  * Seperate multiple job files by a stonewall
 693                  */
 694                 if (!global && stonewall) {
 695                         td->stonewall = stonewall;
 696                         stonewall = 0;
 697                 }
 698
 699                 fgetpos(f, &off);
 700                 while ((p = fgets(string, 4096, f)) != NULL) {
 701                         if (is_empty_or_comment(p))
 702                                 continue;
 703                         if (strstr(p, "["))
 704                                 break;
 705                         strip_blank_front(&p);
 706                         strip_blank_end(p);
 707
 708                         if (!check_int(p, "prio", &prio)) {
 709 #ifndef FIO_HAVE_IOPRIO
 710                                 log_err("io priorities not available\n");
 711                                 ret = 1;
 712                                 break;
 713 #endif
 714                                 td->ioprio |= prio;
 715                                 fgetpos(f, &off);
 716                                 continue;
 717                         }
 718                         if (!check_int(p, "prioclass", &prioclass)) {
 719 #ifndef FIO_HAVE_IOPRIO
 720                                 log_err("io priorities not available\n");
 721                                 ret = 1;
 722                                 break;
 723 #else
 724                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 725                                 fgetpos(f, &off);
 726                                 continue;
 727 #endif
 728                         }
 729                         if (!check_int(p, "direct", &il)) {
 730                                 td->odirect = il;
 731                                 fgetpos(f, &off);
 732                                 continue;
 733                         }
 734                         if (!check_int(p, "rand_repeatable", &il)) {
 735                                 td->rand_repeatable = il;
 736                                 fgetpos(f, &off);
 737                                 continue;
 738                         }
 739                         if (!check_int(p, "rate", &td->rate)) {
 740                                 fgetpos(f, &off);
 741                                 continue;
 742                         }
 743                         if (!check_int(p, "ratemin", &td->ratemin)) {
 744                                 fgetpos(f, &off);
 745                                 continue;
 746                         }
 747                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 748                                 fgetpos(f, &off);
 749                                 continue;
 750                         }
 751                         if (!check_int(p, "cpuload", &td->cpuload)) {
 752                                 fgetpos(f, &off);
 753                                 continue;
 754                         }
 755                         if (!check_int(p, "cpuchunks", &td->cpucycle)) {
 756                                 fgetpos(f, &off);
 757                                 continue;
 758                         }
 759                         if (!check_int(p, "thinktime", &td->thinktime)) {
 760                                 fgetpos(f, &off);
 761                                 continue;
 762                         }
 763                         if (!check_int(p, "cpumask", &cpu)) {
 764 #ifndef FIO_HAVE_CPU_AFFINITY
 765                                 log_err("cpu affinity not available\n");
 766                                 ret = 1;
 767                                 break;
 768 #endif
 769                                 fill_cpu_mask(td->cpumask, cpu);
 770                                 fgetpos(f, &off);
 771                                 continue;
 772                         }
 773                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 774                                 fgetpos(f, &off);
 775                                 td->end_fsync = 1;
 776                                 continue;
 777                         }
 778                         if (!check_int(p, "startdelay", &td->start_delay)) {
 779                                 fgetpos(f, &off);
 780                                 continue;
 781                         }
 782                         if (!check_str_time(p, "timeout", &ull)) {
 783                                 td->timeout = ull;
 784                                 fgetpos(f, &off);
 785                                 continue;
 786                         }
 787                         if (!check_int(p, "invalidate", &il)) {
 788                                 td->invalidate_cache = il;
 789                                 fgetpos(f, &off);
 790                                 continue;
 791                         }
 792                         if (!check_int(p, "iodepth", &td->iodepth)) {
 793                                 fgetpos(f, &off);
 794                                 continue;
 795                         }
 796                         if (!check_int(p, "sync", &il)) {
 797                                 td->sync_io = il;
 798                                 fgetpos(f, &off);
 799                                 continue;
 800                         }
 801                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 802                                 fgetpos(f, &off);
 803                                 continue;
 804                         }
 805                         if (!check_int(p, "create_serialize", &il)) {
 806                                 td->create_serialize = il;
 807                                 fgetpos(f, &off);
 808                                 continue;
 809                         }
 810                         if (!check_int(p, "create_fsync", &il)) {
 811                                 td->create_fsync = il;
 812                                 fgetpos(f, &off);
 813                                 continue;
 814                         }
 815                         if (!check_int(p, "end_fsync", &il)) {
 816                                 td->end_fsync = il;
 817                                 fgetpos(f, &off);
 818                                 continue;
 819                         }
 820                         if (!check_int(p, "loops", &td->loops)) {
 821                                 fgetpos(f, &off);
 822                                 continue;
 823                         }
 824                         if (!check_int(p, "numjobs", &td->numjobs)) {
 825                                 fgetpos(f, &off);
 826                                 continue;
 827                         }
 828                         if (!check_int(p, "overwrite", &il)) {
 829                                 td->overwrite = il;
 830                                 fgetpos(f, &off);
 831                                 continue;
 832                         }
 833                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 834                                 fgetpos(f, &off);
 835                                 continue;
 836                         }
 837                         if (!check_int(p, "rwmixread", &il)) {
 838                                 if (il > 100)
 839                                         il = 100;
 840                                 td->rwmixread = il;
 841                                 fgetpos(f, &off);
 842                                 continue;
 843                         }
 844                         if (!check_int(p, "rwmixwrite", &il)) {
 845                                 if (il > 100)
 846                                         il = 100;
 847                                 td->rwmixread = 100 - il;
 848                                 fgetpos(f, &off);
 849                                 continue;
 850                         }
 851                         if (!check_int(p, "nice", &td->nice)) {
 852                                 fgetpos(f, &off);
 853                                 continue;
 854                         }
 855                         if (!check_int(p, "nrfiles", &td->nr_files)) {
 856                                 fgetpos(f, &off);
 857                                 continue;
 858                         }
 859                         if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
 860                                 if (ul1 > ul2) {
 861                                         td->max_bs = ul1;
 862                                         td->min_bs = ul2;
 863                                 } else {
 864                                         td->max_bs = ul2;
 865                                         td->min_bs = ul1;
 866                                 }
 867                                 fgetpos(f, &off);
 868                                 continue;
 869                         }
 870                         if (!check_str_bytes(p, "bs", &ull)) {
 871                                 td->bs = ull;
 872                                 fgetpos(f, &off);
 873                                 continue;
 874                         }
 875                         if (!check_str_bytes(p, "size", &td->total_file_size)) {
 876                                 fgetpos(f, &off);
 877                                 continue;
 878                         }
 879                         if (!check_str_bytes(p, "offset", &td->start_offset)) {
 880                                 fgetpos(f, &off);
 881                                 continue;
 882                         }
 883                         if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
 884                                 fgetpos(f, &off);
 885                                 continue;
 886                         }
 887                         if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
 888                                 fgetpos(f, &off);
 889                                 continue;
 890                         }
 891                         if (!check_str_bytes(p, "lockmem", &mlock_size)) {
 892                                 fgetpos(f, &off);
 893                                 continue;
 894                         }
 895                         if (!check_strstore(p, "directory", tmpbuf)) {
 896                                 td->directory = strdup(tmpbuf);
 897                                 fgetpos(f, &off);
 898                                 continue;
 899                         }
 900                         if (!check_strstore(p, "name", tmpbuf)) {
 901                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 902                                 fgetpos(f, &off);
 903                                 continue;
 904                         }
 905                         if (!check_str(p, "mem", str_mem_cb, td)) {
 906                                 fgetpos(f, &off);
 907                                 continue;
 908                         }
 909                         if (!check_str(p, "verify", str_verify_cb, td)) {
 910                                 fgetpos(f, &off);
 911                                 continue;
 912                         }
 913                         if (!check_str(p, "rw", str_rw_cb, td)) {
 914                                 fgetpos(f, &off);
 915                                 continue;
 916                         }
 917                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 918                                 fgetpos(f, &off);
 919                                 continue;
 920                         }
 921                         if (!check_strset(p, "create")) {
 922                                 td->create_file = 1;
 923                                 fgetpos(f, &off);
 924                                 continue;
 925                         }
 926                         if (!check_strset(p, "exitall")) {
 927                                 exitall_on_terminate = 1;
 928                                 fgetpos(f, &off);
 929                                 continue;
 930                         }
 931                         if (!check_strset(p, "stonewall")) {
 932                                 td->stonewall = 1;
 933                                 fgetpos(f, &off);
 934                                 continue;
 935                         }
 936                         if (!check_strset(p, "thread")) {
 937                                 td->use_thread = 1;
 938                                 fgetpos(f, &off);
 939                                 continue;
 940                         }
 941                         if (!check_strset(p, "unlink")) {
 942                                 td->unlink = 1;
 943                                 fgetpos(f, &off);
 944                                 continue;
 945                         }
 946                         if (!check_strstore(p, "iolog", tmpbuf)) {
 947                                 if (td->write_iolog) {
 948                                         log_err("fio: read iolog overrides given write_iolog\n");
 949                                         free(td->iolog_file);
 950                                         td->write_iolog = 0;
 951                                 }
 952                                 td->iolog_file = strdup(tmpbuf);
 953                                 td->read_iolog = 1;
 954                                 fgetpos(f, &off);
 955                                 continue;
 956                         }
 957                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 958                                 if (!td->read_iolog) {
 959                                         td->iolog_file = strdup(tmpbuf);
 960                                         td->write_iolog = 1;
 961                                 } else
 962                                         log_err("fio: read iolog overrides given write_iolog\n");
 963                                 fgetpos(f, &off);
 964                                 continue;
 965                         }
 966                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 967                                 td->exec_prerun = strdup(tmpbuf);
 968                                 fgetpos(f, &off);
 969                                 continue;
 970                         }
 971                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 972                                 td->exec_postrun = strdup(tmpbuf);
 973                                 fgetpos(f, &off);
 974                                 continue;
 975                         }
 976                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 977 #ifndef FIO_HAVE_IOSCHED_SWITCH
 978                                 log_err("io scheduler switching not available\n");
 979                                 ret = 1;
 980                                 break;
 981 #else
 982                                 td->ioscheduler = strdup(tmpbuf);
 983                                 fgetpos(f, &off);
 984                                 continue;
 985 #endif
 986                         }
 987
 988                         /*
 989                          * Don't break here, continue parsing options so we
 990                          * dump all the bad ones. Makes trial/error fixups
 991                          * easier on the user.
 992                          */
 993                         printf("Client%d: bad option %s\n",td->thread_number,p);
 994                         ret = 1;
 995                 }
 996
 997                 if (!ret) {
 998                         fsetpos(f, &off);
 999                         ret = add_job(td, name, 0);
1000                 }
1001                 if (ret)
1002                         break;
1003         }
1004
1005         free(string);
1006         free(name);
1007         free(tmpbuf);
1008         fclose(f);
1009         return ret;
1010 }
1011
1012 static int fill_def_thread(void)
1013 {
1014         memset(&def_thread, 0, sizeof(def_thread));
1015
1016         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1017                 perror("sched_getaffinity");
1018                 return 1;
1019         }
1020
1021         /*
1022          * fill globals
1023          */
1024         def_thread.ddir = DDIR_READ;
1025         def_thread.iomix = 0;
1026         def_thread.bs = DEF_BS;
1027         def_thread.min_bs = -1;
1028         def_thread.max_bs = -1;
1029         def_thread.odirect = DEF_ODIRECT;
1030         def_thread.ratecycle = DEF_RATE_CYCLE;
1031         def_thread.sequential = DEF_SEQUENTIAL;
1032         def_thread.timeout = def_timeout;
1033         def_thread.create_file = DEF_CREATE;
1034         def_thread.overwrite = DEF_OVERWRITE;
1035         def_thread.invalidate_cache = DEF_INVALIDATE;
1036         def_thread.sync_io = DEF_SYNCIO;
1037         def_thread.mem_type = MEM_MALLOC;
1038         def_thread.bw_avg_time = DEF_BWAVGTIME;
1039         def_thread.create_serialize = DEF_CREATE_SER;
1040         def_thread.create_fsync = DEF_CREATE_FSYNC;
1041         def_thread.loops = DEF_LOOPS;
1042         def_thread.verify = DEF_VERIFY;
1043         def_thread.stonewall = DEF_STONEWALL;
1044         def_thread.numjobs = DEF_NUMJOBS;
1045         def_thread.use_thread = DEF_USE_THREAD;
1046         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1047         def_thread.rwmixread = DEF_RWMIX_READ;
1048         def_thread.nice = DEF_NICE;
1049         def_thread.rand_repeatable = DEF_RAND_REPEAT;
1050         def_thread.nr_files = DEF_NR_FILES;
1051         def_thread.unlink = DEF_UNLINK;
1052 #ifdef FIO_HAVE_DISK_UTIL
1053         def_thread.do_disk_util = 1;
1054 #endif
1055
1056         return 0;
1057 }
1058
1059 static void usage(char *name)
1060 {
1061         printf("%s\n", fio_version_string);
1062         printf("\t-o Write output to file\n");
1063         printf("\t-t Runtime in seconds\n");
1064         printf("\t-l Generate per-job latency logs\n");
1065         printf("\t-w Generate per-job bandwidth logs\n");
1066         printf("\t-m Minimal (terse) output\n");
1067         printf("\t-v Print version info and exit\n");
1068 }
1069
1070 static int parse_cmd_line(int argc, char *argv[])
1071 {
1072         int c, idx = 1, ini_idx = 0;
1073
1074         while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1075                 switch (c) {
1076                         case 't':
1077                                 def_timeout = atoi(optarg);
1078                                 idx = optind;
1079                                 break;
1080                         case 'l':
1081                                 write_lat_log = 1;
1082                                 idx = optind;
1083                                 break;
1084                         case 'w':
1085                                 write_bw_log = 1;
1086                                 idx = optind;
1087                                 break;
1088                         case 'o':
1089                                 f_out = fopen(optarg, "w+");
1090                                 if (!f_out) {
1091                                         perror("fopen output");
1092                                         exit(1);
1093                                 }
1094                                 f_err = f_out;
1095                                 idx = optind;
1096                                 break;
1097                         case 'm':
1098                                 terse_output = 1;
1099                                 idx = optind;
1100                                 break;
1101                         case 'h':
1102                                 usage(argv[0]);
1103                                 exit(0);
1104                         case 'v':
1105                                 printf("%s\n", fio_version_string);
1106                                 exit(0);
1107                 }
1108         }
1109
1110         while (idx < argc) {
1111                 ini_idx++;
1112                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1113                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1114                 idx++;
1115         }
1116
1117         if (!f_out) {
1118                 f_out = stdout;
1119                 f_err = stderr;
1120         }
1121
1122         return ini_idx;
1123 }
1124
1125 static void free_shm(void)
1126 {
1127         struct shmid_ds sbuf;
1128
1129         if (threads) {
1130                 shmdt((void *) threads);
1131                 threads = NULL;
1132                 shmctl(shm_id, IPC_RMID, &sbuf);
1133         }
1134 }
1135
1136 /*
1137  * The thread area is shared between the main process and the job
1138  * threads/processes. So setup a shared memory segment that will hold
1139  * all the job info.
1140  */
1141 static int setup_thread_area(void)
1142 {
1143         /*
1144          * 1024 is too much on some machines, scale max_jobs if
1145          * we get a failure that looks like too large a shm segment
1146          */
1147         do {
1148                 size_t size = max_jobs * sizeof(struct thread_data);
1149
1150                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1151                 if (shm_id != -1)
1152                         break;
1153                 if (errno != EINVAL) {
1154                         perror("shmget");
1155                         break;
1156                 }
1157
1158                 max_jobs >>= 1;
1159         } while (max_jobs);
1160
1161         if (shm_id == -1)
1162                 return 1;
1163
1164         threads = shmat(shm_id, NULL, 0);
1165         if (threads == (void *) -1) {
1166                 perror("shmat");
1167                 return 1;
1168         }
1169
1170         atexit(free_shm);
1171         return 0;
1172 }
1173
1174 int parse_options(int argc, char *argv[])
1175 {
1176         int job_files, i;
1177
1178         if (setup_thread_area())
1179                 return 1;
1180         if (fill_def_thread())
1181                 return 1;
1182
1183         job_files = parse_cmd_line(argc, argv);
1184         if (!job_files) {
1185                 log_err("Need job file(s)\n");
1186                 usage(argv[0]);
1187                 return 1;
1188         }
1189
1190         for (i = 0; i < job_files; i++) {
1191                 if (fill_def_thread())
1192                         return 1;
1193                 if (parse_jobs_ini(ini_file[i], i))
1194                         return 1;
1195                 free(ini_file[i]);
1196         }
1197
1198         free(ini_file);
1199         return 0;
1200 }