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