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 #define DEF_WRITE_BW_LOG        (0)
  51 #define DEF_WRITE_LAT_LOG       (0)
  52
  53 static int def_timeout = DEF_TIMEOUT;
  54
  55 static char fio_version_string[] = "fio 1.5";
  56
  57 static char **ini_file;
  58 static int max_jobs = MAX_JOBS;
  59
  60 struct thread_data def_thread;
  61 struct thread_data *threads = NULL;
  62
  63 int rate_quit = 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 static int write_lat_log = DEF_WRITE_LAT_LOG;
  71 static int write_bw_log = DEF_WRITE_BW_LOG;
  72
  73 /*
  74  * Return a free job structure.
  75  */
  76 static struct thread_data *get_new_job(int global, struct thread_data *parent)
  77 {
  78         struct thread_data *td;
  79
  80         if (global)
  81                 return &def_thread;
  82         if (thread_number >= max_jobs)
  83                 return NULL;
  84
  85         td = &threads[thread_number++];
  86         *td = *parent;
  87         td->name[0] = '\0';
  88
  89         td->thread_number = thread_number;
  90         return td;
  91 }
  92
  93 static void put_job(struct thread_data *td)
  94 {
  95         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
  96         thread_number--;
  97 }
  98
  99 /*
 100  * Adds a job to the list of things todo. Sanitizes the various options
 101  * to make sure we don't have conflicts, and initializes various
 102  * members of td.
 103  */
 104 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 105 {
 106         char *ddir_str[] = { "read", "write", "randread", "randwrite",
 107                              "rw", NULL, "randrw" };
 108         struct stat sb;
 109         int numjobs, ddir, i;
 110         struct fio_file *f;
 111
 112 #ifndef FIO_HAVE_LIBAIO
 113         if (td->io_engine == FIO_LIBAIO) {
 114                 log_err("Linux libaio not available\n");
 115                 return 1;
 116         }
 117 #endif
 118 #ifndef FIO_HAVE_POSIXAIO
 119         if (td->io_engine == FIO_POSIXAIO) {
 120                 log_err("posix aio not available\n");
 121                 return 1;
 122         }
 123 #endif
 124
 125         /*
 126          * the def_thread is just for options, it's not a real job
 127          */
 128         if (td == &def_thread)
 129                 return 0;
 130
 131         /*
 132          * Set default io engine, if none set
 133          */
 134         if (!td->io_ops) {
 135                 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
 136                 if (!td->io_ops) {
 137                         log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
 138                         return 1;
 139                 }
 140         }
 141
 142         if (td->io_ops->flags & FIO_SYNCIO)
 143                 td->iodepth = 1;
 144         else {
 145                 if (!td->iodepth)
 146                         td->iodepth = td->nr_files;
 147         }
 148
 149         /*
 150          * only really works for sequential io for now, and with 1 file
 151          */
 152         if (td->zone_size && !td->sequential && td->nr_files == 1)
 153                 td->zone_size = 0;
 154
 155         /*
 156          * Reads can do overwrites, we always need to pre-create the file
 157          */
 158         if (td_read(td) || td_rw(td))
 159                 td->overwrite = 1;
 160
 161         td->filetype = FIO_TYPE_FILE;
 162         if (!stat(jobname, &sb)) {
 163                 if (S_ISBLK(sb.st_mode))
 164                         td->filetype = FIO_TYPE_BD;
 165                 else if (S_ISCHR(sb.st_mode))
 166                         td->filetype = FIO_TYPE_CHAR;
 167         }
 168
 169         if (td->odirect)
 170                 td->io_ops->flags |= FIO_RAWIO;
 171
 172         if (td->filename)
 173                 td->nr_uniq_files = 1;
 174         else
 175                 td->nr_uniq_files = td->nr_files;
 176
 177         if (td->filetype == FIO_TYPE_FILE || td->filename) {
 178                 char tmp[PATH_MAX];
 179                 int len = 0;
 180                 int i;
 181
 182                 if (td->directory && td->directory[0] != '\0')
 183                         sprintf(tmp, "%s/", td->directory);
 184
 185                 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
 186
 187                 for_each_file(td, f, i) {
 188                         memset(f, 0, sizeof(*f));
 189                         f->fd = -1;
 190                         f->fileno = i;
 191
 192                         if (td->filename)
 193                                 sprintf(tmp + len, "%s", td->filename);
 194                         else
 195                                 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
 196                         f->file_name = strdup(tmp);
 197                 }
 198         } else {
 199                 td->nr_files = 1;
 200                 td->files = malloc(sizeof(struct fio_file));
 201                 f = &td->files[0];
 202
 203                 memset(f, 0, sizeof(*f));
 204                 f->fd = -1;
 205                 f->file_name = strdup(jobname);
 206         }
 207
 208         for_each_file(td, f, i) {
 209                 f->file_size = td->total_file_size / td->nr_files;
 210                 f->file_offset = td->start_offset;
 211         }
 212
 213         fio_sem_init(&td->mutex, 0);
 214
 215         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
 216         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
 217         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
 218
 219         if (td->min_bs == -1U)
 220                 td->min_bs = td->bs;
 221         if (td->max_bs == -1U)
 222                 td->max_bs = td->bs;
 223         if (td_read(td) && !td_rw(td))
 224                 td->verify = 0;
 225
 226         if (td->stonewall && td->thread_number > 1)
 227                 groupid++;
 228
 229         td->groupid = groupid;
 230
 231         if (setup_rate(td))
 232                 goto err;
 233
 234         if (td->write_lat_log) {
 235                 setup_log(&td->slat_log);
 236                 setup_log(&td->clat_log);
 237         }
 238         if (td->write_bw_log)
 239                 setup_log(&td->bw_log);
 240
 241         if (td->name[0] == '\0')
 242                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
 243
 244         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 245
 246         if (!terse_output) {
 247                 if (!job_add_num) {
 248                         if (td->io_ops->flags & FIO_CPUIO)
 249                                 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
 250                         else
 251                                 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);
 252                 } else if (job_add_num == 1)
 253                         fprintf(f_out, "...\n");
 254         }
 255
 256         /*
 257          * recurse add identical jobs, clear numjobs and stonewall options
 258          * as they don't apply to sub-jobs
 259          */
 260         numjobs = td->numjobs;
 261         while (--numjobs) {
 262                 struct thread_data *td_new = get_new_job(0, td);
 263
 264                 if (!td_new)
 265                         goto err;
 266
 267                 td_new->numjobs = 1;
 268                 td_new->stonewall = 0;
 269                 job_add_num = numjobs - 1;
 270
 271                 if (add_job(td_new, jobname, job_add_num))
 272                         goto err;
 273         }
 274         return 0;
 275 err:
 276         put_job(td);
 277         return -1;
 278 }
 279
 280 /*
 281  * Initialize the various random states we need (random io, block size ranges,
 282  * read/write mix, etc).
 283  */
 284 int init_random_state(struct thread_data *td)
 285 {
 286         unsigned long seeds[4];
 287         int fd, num_maps, blocks, i;
 288         struct fio_file *f;
 289
 290         fd = open("/dev/urandom", O_RDONLY);
 291         if (fd == -1) {
 292                 td_verror(td, errno);
 293                 return 1;
 294         }
 295
 296         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 297                 td_verror(td, EIO);
 298                 close(fd);
 299                 return 1;
 300         }
 301
 302         close(fd);
 303
 304         os_random_seed(seeds[0], &td->bsrange_state);
 305         os_random_seed(seeds[1], &td->verify_state);
 306         os_random_seed(seeds[2], &td->rwmix_state);
 307
 308         if (td->sequential)
 309                 return 0;
 310
 311         if (td->rand_repeatable)
 312                 seeds[3] = DEF_RANDSEED;
 313
 314         for_each_file(td, f, i) {
 315                 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
 316                 num_maps = blocks / BLOCKS_PER_MAP;
 317                 f->file_map = malloc(num_maps * sizeof(long));
 318                 f->num_maps = num_maps;
 319                 memset(f->file_map, 0, num_maps * sizeof(long));
 320         }
 321
 322         os_random_seed(seeds[3], &td->random_state);
 323         return 0;
 324 }
 325
 326 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 327 {
 328 #ifdef FIO_HAVE_CPU_AFFINITY
 329         unsigned int i;
 330
 331         CPU_ZERO(&cpumask);
 332
 333         for (i = 0; i < sizeof(int) * 8; i++) {
 334                 if ((1 << i) & cpu)
 335                         CPU_SET(i, &cpumask);
 336         }
 337 #endif
 338 }
 339
 340 static unsigned long get_mult_time(char c)
 341 {
 342         switch (c) {
 343                 case 'm':
 344                 case 'M':
 345                         return 60;
 346                 case 'h':
 347                 case 'H':
 348                         return 60 * 60;
 349                 case 'd':
 350                 case 'D':
 351                         return 24 * 60 * 60;
 352                 default:
 353                         return 1;
 354         }
 355 }
 356
 357 static unsigned long get_mult_bytes(char c)
 358 {
 359         switch (c) {
 360                 case 'k':
 361                 case 'K':
 362                         return 1024;
 363                 case 'm':
 364                 case 'M':
 365                         return 1024 * 1024;
 366                 case 'g':
 367                 case 'G':
 368                         return 1024 * 1024 * 1024;
 369                 default:
 370                         return 1;
 371         }
 372 }
 373
 374 /*
 375  * convert string after '=' into decimal value, noting any size suffix
 376  */
 377 static int str_to_decimal(char *p, unsigned long long *val, int kilo)
 378 {
 379         char *str;
 380         int len;
 381
 382         str = strchr(p, '=');
 383         if (!str)
 384                 return 1;
 385
 386         str++;
 387         len = strlen(str);
 388
 389         *val = strtoul(str, NULL, 10);
 390         if (*val == ULONG_MAX && errno == ERANGE)
 391                 return 1;
 392
 393         if (kilo)
 394                 *val *= get_mult_bytes(str[len - 1]);
 395         else
 396                 *val *= get_mult_time(str[len - 1]);
 397         return 0;
 398 }
 399
 400 static int check_str_bytes(char *p, char *name, unsigned long long *val)
 401 {
 402         if (strncmp(p, name, strlen(name) - 1))
 403                 return 1;
 404
 405         return str_to_decimal(p, val, 1);
 406 }
 407
 408 static int check_str_time(char *p, char *name, unsigned long long *val)
 409 {
 410         if (strncmp(p, name, strlen(name) - 1))
 411                 return 1;
 412
 413         return str_to_decimal(p, val, 0);
 414 }
 415
 416 static void strip_blank_front(char **p)
 417 {
 418         char *s = *p;
 419
 420         while (isspace(*s))
 421                 s++;
 422 }
 423
 424 static void strip_blank_end(char *p)
 425 {
 426         char *s = p + strlen(p) - 1;
 427
 428         while (isspace(*s) || iscntrl(*s))
 429                 s--;
 430
 431         *(s + 1) = '\0';
 432 }
 433
 434 typedef int (str_cb_fn)(struct thread_data *, char *);
 435
 436 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 437 {
 438         char *s;
 439
 440         if (strncmp(p, name, strlen(name)))
 441                 return 1;
 442
 443         s = strstr(p, name);
 444         if (!s)
 445                 return 1;
 446
 447         s = strchr(s, '=');
 448         if (!s)
 449                 return 1;
 450
 451         s++;
 452         strip_blank_front(&s);
 453         return cb(td, s);
 454 }
 455
 456 static int check_strstore(char *p, char *name, char *dest)
 457 {
 458         char *s;
 459
 460         if (strncmp(p, name, strlen(name)))
 461                 return 1;
 462
 463         s = strstr(p, name);
 464         if (!s)
 465                 return 1;
 466
 467         s = strchr(p, '=');
 468         if (!s)
 469                 return 1;
 470
 471         s++;
 472         strip_blank_front(&s);
 473
 474         strcpy(dest, s);
 475         return 0;
 476 }
 477
 478 static int __check_range_bytes(char *str, unsigned long *val)
 479 {
 480         char suffix;
 481
 482         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 483                 *val *= get_mult_bytes(suffix);
 484                 return 0;
 485         }
 486
 487         if (sscanf(str, "%lu", val) == 1)
 488                 return 0;
 489
 490         return 1;
 491 }
 492
 493 static int check_range_bytes(char *p, char *name, unsigned long *s,
 494                              unsigned long *e)
 495 {
 496         char option[128];
 497         char *str, *p1, *p2;
 498
 499         if (strncmp(p, name, strlen(name)))
 500                 return 1;
 501
 502         strcpy(option, p);
 503         p = option;
 504
 505         str = strstr(p, name);
 506         if (!str)
 507                 return 1;
 508
 509         p += strlen(name);
 510
 511         str = strchr(p, '=');
 512         if (!str)
 513                 return 1;
 514
 515         /*
 516          * 'p' now holds whatever is after the '=' sign
 517          */
 518         p1 = str + 1;
 519
 520         /*
 521          * terminate p1 at the '-' sign
 522          */
 523         p = strchr(p1, '-');
 524         if (!p)
 525                 return 1;
 526
 527         p2 = p + 1;
 528         *p = '\0';
 529
 530         if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
 531                 return 0;
 532
 533         return 1;
 534 }
 535
 536 static int check_int(char *p, char *name, unsigned int *val)
 537 {
 538         char *str;
 539
 540         if (strncmp(p, name, strlen(name)))
 541                 return 1;
 542
 543         str = strstr(p, name);
 544         if (!str)
 545                 return 1;
 546
 547         str = strchr(p, '=');
 548         if (!str)
 549                 return 1;
 550
 551         str++;
 552
 553         if (sscanf(str, "%u", val) == 1)
 554                 return 0;
 555
 556         return 1;
 557 }
 558
 559 static int check_strset(char *p, char *name)
 560 {
 561         return strncmp(p, name, strlen(name));
 562 }
 563
 564 static int is_empty_or_comment(char *line)
 565 {
 566         unsigned int i;
 567
 568         for (i = 0; i < strlen(line); i++) {
 569                 if (line[i] == ';')
 570                         return 1;
 571                 if (!isspace(line[i]) && !iscntrl(line[i]))
 572                         return 0;
 573         }
 574
 575         return 1;
 576 }
 577
 578 static int str_rw_cb(struct thread_data *td, char *mem)
 579 {
 580         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 581                 td->ddir = DDIR_READ;
 582                 td->sequential = 1;
 583                 return 0;
 584         } else if (!strncmp(mem, "randread", 8)) {
 585                 td->ddir = DDIR_READ;
 586                 td->sequential = 0;
 587                 return 0;
 588         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 589                 td->ddir = DDIR_WRITE;
 590                 td->sequential = 1;
 591                 return 0;
 592         } else if (!strncmp(mem, "randwrite", 9)) {
 593                 td->ddir = DDIR_WRITE;
 594                 td->sequential = 0;
 595                 return 0;
 596         } else if (!strncmp(mem, "rw", 2)) {
 597                 td->ddir = 0;
 598                 td->iomix = 1;
 599                 td->sequential = 1;
 600                 return 0;
 601         } else if (!strncmp(mem, "randrw", 6)) {
 602                 td->ddir = 0;
 603                 td->iomix = 1;
 604                 td->sequential = 0;
 605                 return 0;
 606         }
 607
 608         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 609         return 1;
 610 }
 611
 612 static int str_verify_cb(struct thread_data *td, char *mem)
 613 {
 614         if (!strncmp(mem, "0", 1)) {
 615                 td->verify = VERIFY_NONE;
 616                 return 0;
 617         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 618                 td->verify = VERIFY_MD5;
 619                 return 0;
 620         } else if (!strncmp(mem, "crc32", 5)) {
 621                 td->verify = VERIFY_CRC32;
 622                 return 0;
 623         }
 624
 625         log_err("fio: verify types: md5, crc32\n");
 626         return 1;
 627 }
 628
 629 static int str_mem_cb(struct thread_data *td, char *mem)
 630 {
 631         if (!strncmp(mem, "malloc", 6)) {
 632                 td->mem_type = MEM_MALLOC;
 633                 return 0;
 634         } else if (!strncmp(mem, "shm", 3)) {
 635                 td->mem_type = MEM_SHM;
 636                 return 0;
 637         } else if (!strncmp(mem, "mmap", 4)) {
 638                 td->mem_type = MEM_MMAP;
 639                 return 0;
 640         }
 641
 642         log_err("fio: mem type: malloc, shm, mmap\n");
 643         return 1;
 644 }
 645
 646 static int str_ioengine_cb(struct thread_data *td, char *str)
 647 {
 648         td->io_ops = load_ioengine(td, str);
 649         if (td->io_ops)
 650                 return 0;
 651
 652         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
 653         return 1;
 654 }
 655
 656 /*
 657  * This is our [ini] type file parser.
 658  */
 659 int parse_jobs_ini(char *file, int stonewall_flag)
 660 {
 661         unsigned int prioclass, prio, cpu, global, il;
 662         unsigned long long ull;
 663         unsigned long ul1, ul2;
 664         struct thread_data *td;
 665         char *string, *name, *tmpbuf;
 666         fpos_t off;
 667         FILE *f;
 668         char *p;
 669         int ret = 0, stonewall;
 670
 671         f = fopen(file, "r");
 672         if (!f) {
 673                 perror("fopen job file");
 674                 return 1;
 675         }
 676
 677         string = malloc(4096);
 678         name = malloc(256);
 679         tmpbuf = malloc(4096);
 680
 681         stonewall = stonewall_flag;
 682         while ((p = fgets(string, 4096, f)) != NULL) {
 683                 if (ret)
 684                         break;
 685                 if (is_empty_or_comment(p))
 686                         continue;
 687                 if (sscanf(p, "[%s]", name) != 1)
 688                         continue;
 689
 690                 global = !strncmp(name, "global", 6);
 691
 692                 name[strlen(name) - 1] = '\0';
 693
 694                 td = get_new_job(global, &def_thread);
 695                 if (!td) {
 696                         ret = 1;
 697                         break;
 698                 }
 699
 700                 /*
 701                  * Seperate multiple job files by a stonewall
 702                  */
 703                 if (!global && stonewall) {
 704                         td->stonewall = stonewall;
 705                         stonewall = 0;
 706                 }
 707
 708                 fgetpos(f, &off);
 709                 while ((p = fgets(string, 4096, f)) != NULL) {
 710                         if (is_empty_or_comment(p))
 711                                 continue;
 712                         if (strstr(p, "["))
 713                                 break;
 714                         strip_blank_front(&p);
 715                         strip_blank_end(p);
 716
 717                         if (!check_int(p, "prio", &prio)) {
 718 #ifndef FIO_HAVE_IOPRIO
 719                                 log_err("io priorities not available\n");
 720                                 ret = 1;
 721                                 break;
 722 #endif
 723                                 td->ioprio |= prio;
 724                                 fgetpos(f, &off);
 725                                 continue;
 726                         }
 727                         if (!check_int(p, "prioclass", &prioclass)) {
 728 #ifndef FIO_HAVE_IOPRIO
 729                                 log_err("io priorities not available\n");
 730                                 ret = 1;
 731                                 break;
 732 #else
 733                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 734                                 fgetpos(f, &off);
 735                                 continue;
 736 #endif
 737                         }
 738                         if (!check_int(p, "direct", &il)) {
 739                                 td->odirect = il;
 740                                 fgetpos(f, &off);
 741                                 continue;
 742                         }
 743                         if (!check_int(p, "rand_repeatable", &il)) {
 744                                 td->rand_repeatable = il;
 745                                 fgetpos(f, &off);
 746                                 continue;
 747                         }
 748                         if (!check_int(p, "rate", &td->rate)) {
 749                                 fgetpos(f, &off);
 750                                 continue;
 751                         }
 752                         if (!check_int(p, "ratemin", &td->ratemin)) {
 753                                 fgetpos(f, &off);
 754                                 continue;
 755                         }
 756                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 757                                 fgetpos(f, &off);
 758                                 continue;
 759                         }
 760                         if (!check_int(p, "cpuload", &td->cpuload)) {
 761                                 fgetpos(f, &off);
 762                                 continue;
 763                         }
 764                         if (!check_int(p, "cpuchunks", &td->cpucycle)) {
 765                                 fgetpos(f, &off);
 766                                 continue;
 767                         }
 768                         if (!check_int(p, "thinktime", &td->thinktime)) {
 769                                 fgetpos(f, &off);
 770                                 continue;
 771                         }
 772                         if (!check_int(p, "cpumask", &cpu)) {
 773 #ifndef FIO_HAVE_CPU_AFFINITY
 774                                 log_err("cpu affinity not available\n");
 775                                 ret = 1;
 776                                 break;
 777 #endif
 778                                 fill_cpu_mask(td->cpumask, cpu);
 779                                 fgetpos(f, &off);
 780                                 continue;
 781                         }
 782                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 783                                 fgetpos(f, &off);
 784                                 td->end_fsync = 1;
 785                                 continue;
 786                         }
 787                         if (!check_int(p, "startdelay", &td->start_delay)) {
 788                                 fgetpos(f, &off);
 789                                 continue;
 790                         }
 791                         if (!check_str_time(p, "timeout", &ull)) {
 792                                 td->timeout = ull;
 793                                 fgetpos(f, &off);
 794                                 continue;
 795                         }
 796                         if (!check_int(p, "invalidate", &il)) {
 797                                 td->invalidate_cache = il;
 798                                 fgetpos(f, &off);
 799                                 continue;
 800                         }
 801                         if (!check_int(p, "iodepth", &td->iodepth)) {
 802                                 fgetpos(f, &off);
 803                                 continue;
 804                         }
 805                         if (!check_int(p, "sync", &il)) {
 806                                 td->sync_io = il;
 807                                 fgetpos(f, &off);
 808                                 continue;
 809                         }
 810                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 811                                 fgetpos(f, &off);
 812                                 continue;
 813                         }
 814                         if (!check_int(p, "create_serialize", &il)) {
 815                                 td->create_serialize = il;
 816                                 fgetpos(f, &off);
 817                                 continue;
 818                         }
 819                         if (!check_int(p, "create_fsync", &il)) {
 820                                 td->create_fsync = il;
 821                                 fgetpos(f, &off);
 822                                 continue;
 823                         }
 824                         if (!check_int(p, "end_fsync", &il)) {
 825                                 td->end_fsync = il;
 826                                 fgetpos(f, &off);
 827                                 continue;
 828                         }
 829                         if (!check_int(p, "loops", &td->loops)) {
 830                                 fgetpos(f, &off);
 831                                 continue;
 832                         }
 833                         if (!check_int(p, "numjobs", &td->numjobs)) {
 834                                 fgetpos(f, &off);
 835                                 continue;
 836                         }
 837                         if (!check_int(p, "overwrite", &il)) {
 838                                 td->overwrite = il;
 839                                 fgetpos(f, &off);
 840                                 continue;
 841                         }
 842                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 843                                 fgetpos(f, &off);
 844                                 continue;
 845                         }
 846                         if (!check_int(p, "rwmixread", &il)) {
 847                                 if (il > 100)
 848                                         il = 100;
 849                                 td->rwmixread = il;
 850                                 fgetpos(f, &off);
 851                                 continue;
 852                         }
 853                         if (!check_int(p, "rwmixwrite", &il)) {
 854                                 if (il > 100)
 855                                         il = 100;
 856                                 td->rwmixread = 100 - il;
 857                                 fgetpos(f, &off);
 858                                 continue;
 859                         }
 860                         if (!check_int(p, "nice", &td->nice)) {
 861                                 fgetpos(f, &off);
 862                                 continue;
 863                         }
 864                         if (!check_int(p, "nrfiles", &td->nr_files)) {
 865                                 fgetpos(f, &off);
 866                                 continue;
 867                         }
 868                         if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
 869                                 if (ul1 > ul2) {
 870                                         td->max_bs = ul1;
 871                                         td->min_bs = ul2;
 872                                 } else {
 873                                         td->max_bs = ul2;
 874                                         td->min_bs = ul1;
 875                                 }
 876                                 fgetpos(f, &off);
 877                                 continue;
 878                         }
 879                         if (!check_str_bytes(p, "bs", &ull)) {
 880                                 td->bs = ull;
 881                                 fgetpos(f, &off);
 882                                 continue;
 883                         }
 884                         if (!check_str_bytes(p, "size", &td->total_file_size)) {
 885                                 fgetpos(f, &off);
 886                                 continue;
 887                         }
 888                         if (!check_str_bytes(p, "offset", &td->start_offset)) {
 889                                 fgetpos(f, &off);
 890                                 continue;
 891                         }
 892                         if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
 893                                 fgetpos(f, &off);
 894                                 continue;
 895                         }
 896                         if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
 897                                 fgetpos(f, &off);
 898                                 continue;
 899                         }
 900                         if (!check_str_bytes(p, "lockmem", &mlock_size)) {
 901                                 fgetpos(f, &off);
 902                                 continue;
 903                         }
 904                         if (!check_strstore(p, "directory", tmpbuf)) {
 905                                 td->directory = strdup(tmpbuf);
 906                                 fgetpos(f, &off);
 907                                 continue;
 908                         }
 909                         if (!check_strstore(p, "filename", tmpbuf)) {
 910                                 td->filename = strdup(tmpbuf);
 911                                 fgetpos(f, &off);
 912                                 continue;
 913                         }
 914                         if (!check_strstore(p, "name", tmpbuf)) {
 915                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 916                                 fgetpos(f, &off);
 917                                 continue;
 918                         }
 919                         if (!check_str(p, "mem", str_mem_cb, td)) {
 920                                 fgetpos(f, &off);
 921                                 continue;
 922                         }
 923                         if (!check_str(p, "verify", str_verify_cb, td)) {
 924                                 fgetpos(f, &off);
 925                                 continue;
 926                         }
 927                         if (!check_str(p, "rw", str_rw_cb, td)) {
 928                                 fgetpos(f, &off);
 929                                 continue;
 930                         }
 931                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 932                                 fgetpos(f, &off);
 933                                 continue;
 934                         }
 935                         if (!check_strset(p, "exitall")) {
 936                                 exitall_on_terminate = 1;
 937                                 fgetpos(f, &off);
 938                                 continue;
 939                         }
 940                         if (!check_strset(p, "stonewall")) {
 941                                 td->stonewall = 1;
 942                                 fgetpos(f, &off);
 943                                 continue;
 944                         }
 945                         if (!check_strset(p, "thread")) {
 946                                 td->use_thread = 1;
 947                                 fgetpos(f, &off);
 948                                 continue;
 949                         }
 950                         if (!check_strset(p, "unlink")) {
 951                                 td->unlink = 1;
 952                                 fgetpos(f, &off);
 953                                 continue;
 954                         }
 955                         if (!check_strset(p, "write_bw_log")) {
 956                                 td->write_bw_log = 1;
 957                                 fgetpos(f, &off);
 958                                 continue;
 959                         }
 960                         if (!check_strset(p, "write_lat_log")) {
 961                                 td->write_lat_log = 1;
 962                                 fgetpos(f, &off);
 963                                 continue;
 964                         }
 965                         if (!check_strstore(p, "iolog", tmpbuf)) {
 966                                 if (td->write_iolog) {
 967                                         log_err("fio: read iolog overrides given write_iolog\n");
 968                                         free(td->iolog_file);
 969                                         td->write_iolog = 0;
 970                                 }
 971                                 td->iolog_file = strdup(tmpbuf);
 972                                 td->read_iolog = 1;
 973                                 fgetpos(f, &off);
 974                                 continue;
 975                         }
 976                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 977                                 if (!td->read_iolog) {
 978                                         td->iolog_file = strdup(tmpbuf);
 979                                         td->write_iolog = 1;
 980                                 } else
 981                                         log_err("fio: read iolog overrides given write_iolog\n");
 982                                 fgetpos(f, &off);
 983                                 continue;
 984                         }
 985                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 986                                 td->exec_prerun = strdup(tmpbuf);
 987                                 fgetpos(f, &off);
 988                                 continue;
 989                         }
 990                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 991                                 td->exec_postrun = strdup(tmpbuf);
 992                                 fgetpos(f, &off);
 993                                 continue;
 994                         }
 995                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 996 #ifndef FIO_HAVE_IOSCHED_SWITCH
 997                                 log_err("io scheduler switching not available\n");
 998                                 ret = 1;
 999                                 break;
1000 #else
1001                                 td->ioscheduler = strdup(tmpbuf);
1002                                 fgetpos(f, &off);
1003                                 continue;
1004 #endif
1005                         }
1006
1007                         /*
1008                          * Don't break here, continue parsing options so we
1009                          * dump all the bad ones. Makes trial/error fixups
1010                          * easier on the user.
1011                          */
1012                         printf("Client%d: bad option %s\n",td->thread_number,p);
1013                         ret = 1;
1014                 }
1015
1016                 if (!ret) {
1017                         fsetpos(f, &off);
1018                         ret = add_job(td, name, 0);
1019                 }
1020                 if (ret)
1021                         break;
1022         }
1023
1024         free(string);
1025         free(name);
1026         free(tmpbuf);
1027         fclose(f);
1028         return ret;
1029 }
1030
1031 static int fill_def_thread(void)
1032 {
1033         memset(&def_thread, 0, sizeof(def_thread));
1034
1035         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1036                 perror("sched_getaffinity");
1037                 return 1;
1038         }
1039
1040         /*
1041          * fill globals
1042          */
1043         def_thread.ddir = DDIR_READ;
1044         def_thread.iomix = 0;
1045         def_thread.bs = DEF_BS;
1046         def_thread.min_bs = -1;
1047         def_thread.max_bs = -1;
1048         def_thread.odirect = DEF_ODIRECT;
1049         def_thread.ratecycle = DEF_RATE_CYCLE;
1050         def_thread.sequential = DEF_SEQUENTIAL;
1051         def_thread.timeout = def_timeout;
1052         def_thread.overwrite = DEF_OVERWRITE;
1053         def_thread.invalidate_cache = DEF_INVALIDATE;
1054         def_thread.sync_io = DEF_SYNCIO;
1055         def_thread.mem_type = MEM_MALLOC;
1056         def_thread.bw_avg_time = DEF_BWAVGTIME;
1057         def_thread.create_serialize = DEF_CREATE_SER;
1058         def_thread.create_fsync = DEF_CREATE_FSYNC;
1059         def_thread.loops = DEF_LOOPS;
1060         def_thread.verify = DEF_VERIFY;
1061         def_thread.stonewall = DEF_STONEWALL;
1062         def_thread.numjobs = DEF_NUMJOBS;
1063         def_thread.use_thread = DEF_USE_THREAD;
1064         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1065         def_thread.rwmixread = DEF_RWMIX_READ;
1066         def_thread.nice = DEF_NICE;
1067         def_thread.rand_repeatable = DEF_RAND_REPEAT;
1068         def_thread.nr_files = DEF_NR_FILES;
1069         def_thread.unlink = DEF_UNLINK;
1070         def_thread.write_bw_log = write_bw_log;
1071         def_thread.write_lat_log = write_lat_log;
1072 #ifdef FIO_HAVE_DISK_UTIL
1073         def_thread.do_disk_util = 1;
1074 #endif
1075
1076         return 0;
1077 }
1078
1079 static void usage(void)
1080 {
1081         printf("%s\n", fio_version_string);
1082         printf("\t-o Write output to file\n");
1083         printf("\t-t Runtime in seconds\n");
1084         printf("\t-l Generate per-job latency logs\n");
1085         printf("\t-w Generate per-job bandwidth logs\n");
1086         printf("\t-m Minimal (terse) output\n");
1087         printf("\t-v Print version info and exit\n");
1088 }
1089
1090 static int parse_cmd_line(int argc, char *argv[])
1091 {
1092         int c, idx = 1, ini_idx = 0;
1093
1094         while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1095                 switch (c) {
1096                         case 't':
1097                                 def_timeout = atoi(optarg);
1098                                 idx = optind;
1099                                 break;
1100                         case 'l':
1101                                 write_lat_log = 1;
1102                                 idx = optind;
1103                                 break;
1104                         case 'w':
1105                                 write_bw_log = 1;
1106                                 idx = optind;
1107                                 break;
1108                         case 'o':
1109                                 f_out = fopen(optarg, "w+");
1110                                 if (!f_out) {
1111                                         perror("fopen output");
1112                                         exit(1);
1113                                 }
1114                                 f_err = f_out;
1115                                 idx = optind;
1116                                 break;
1117                         case 'm':
1118                                 terse_output = 1;
1119                                 idx = optind;
1120                                 break;
1121                         case 'h':
1122                                 usage();
1123                                 exit(0);
1124                         case 'v':
1125                                 printf("%s\n", fio_version_string);
1126                                 exit(0);
1127                 }
1128         }
1129
1130         while (idx < argc) {
1131                 ini_idx++;
1132                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1133                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1134                 idx++;
1135         }
1136
1137         if (!f_out) {
1138                 f_out = stdout;
1139                 f_err = stderr;
1140         }
1141
1142         return ini_idx;
1143 }
1144
1145 static void free_shm(void)
1146 {
1147         struct shmid_ds sbuf;
1148
1149         if (threads) {
1150                 shmdt((void *) threads);
1151                 threads = NULL;
1152                 shmctl(shm_id, IPC_RMID, &sbuf);
1153         }
1154 }
1155
1156 /*
1157  * The thread area is shared between the main process and the job
1158  * threads/processes. So setup a shared memory segment that will hold
1159  * all the job info.
1160  */
1161 static int setup_thread_area(void)
1162 {
1163         /*
1164          * 1024 is too much on some machines, scale max_jobs if
1165          * we get a failure that looks like too large a shm segment
1166          */
1167         do {
1168                 size_t size = max_jobs * sizeof(struct thread_data);
1169
1170                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1171                 if (shm_id != -1)
1172                         break;
1173                 if (errno != EINVAL) {
1174                         perror("shmget");
1175                         break;
1176                 }
1177
1178                 max_jobs >>= 1;
1179         } while (max_jobs);
1180
1181         if (shm_id == -1)
1182                 return 1;
1183
1184         threads = shmat(shm_id, NULL, 0);
1185         if (threads == (void *) -1) {
1186                 perror("shmat");
1187                 return 1;
1188         }
1189
1190         atexit(free_shm);
1191         return 0;
1192 }
1193
1194 int parse_options(int argc, char *argv[])
1195 {
1196         int job_files, i;
1197
1198         if (setup_thread_area())
1199                 return 1;
1200         if (fill_def_thread())
1201                 return 1;
1202
1203         job_files = parse_cmd_line(argc, argv);
1204         if (!job_files) {
1205                 log_err("Need job file(s)\n");
1206                 usage();
1207                 return 1;
1208         }
1209
1210         for (i = 0; i < job_files; i++) {
1211                 if (fill_def_thread())
1212                         return 1;
1213                 if (parse_jobs_ini(ini_file[i], i))
1214                         return 1;
1215                 free(ini_file[i]);
1216         }
1217
1218         free(ini_file);
1219         return 0;
1220 }