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