firmware/lib/vsprintf.c

   1 /*
   2  *  linux/lib/vsprintf.c
   3  *
   4  *  Copyright (C) 1991, 1992  Linus Torvalds
   5  */
   6
   7 /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
   8 /*
   9  * Wirzenius wrote this portably, Torvalds fucked it up :-)
  10  */
  11
  12 /*
  13  * Fri Jul 13 2001 Crutcher Dunnavant <crutcher+kernel@datastacks.com>
  14  * - changed to provide snprintf and vsnprintf functions
  15  * So Feb  1 16:51:32 CET 2004 Juergen Quade <quade@hsnr.de>
  16  * - scnprintf and vscnprintf
  17  */
  18
  19 #include <stdarg.h>
  20 #include <sys/types.h>
  21 #include <string.h>
  22 #include <asm/ctype.h>
  23
  24 #include <asm/div64.h>
  25
  26 /**
  27  * simple_strtoul - convert a string to an unsigned long
  28  * @cp: The start of the string
  29  * @endp: A pointer to the end of the parsed string will be placed here
  30  * @base: The number base to use
  31  */
  32 unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
  33 {
  34         unsigned long result = 0,value;
  35
  36         if (!base) {
  37                 base = 10;
  38                 if (*cp == '0') {
  39                         base = 8;
  40                         cp++;
  41                         if ((toupper(*cp) == 'X') && isxdigit(cp[1])) {
  42                                 cp++;
  43                                 base = 16;
  44                         }
  45                 }
  46         } else if (base == 16) {
  47                 if (cp[0] == '0' && toupper(cp[1]) == 'X')
  48                         cp += 2;
  49         }
  50         while (isxdigit(*cp) &&
  51                (value = isdigit(*cp) ? *cp-'0' : toupper(*cp)-'A'+10) < base) {
  52                 result = result*base + value;
  53                 cp++;
  54         }
  55         if (endp)
  56                 *endp = (char *)cp;
  57         return result;
  58 }
  59
  60
  61 /**
  62  * simple_strtol - convert a string to a signed long
  63  * @cp: The start of the string
  64  * @endp: A pointer to the end of the parsed string will be placed here
  65  * @base: The number base to use
  66  */
  67 long simple_strtol(const char *cp,char **endp,unsigned int base)
  68 {
  69         if(*cp=='-')
  70                 return -simple_strtoul(cp+1,endp,base);
  71         return simple_strtoul(cp,endp,base);
  72 }
  73
  74
  75 /**
  76  * simple_strtoull - convert a string to an unsigned long long
  77  * @cp: The start of the string
  78  * @endp: A pointer to the end of the parsed string will be placed here
  79  * @base: The number base to use
  80  */
  81 unsigned long long simple_strtoull(const char *cp,char **endp,unsigned int base)
  82 {
  83         unsigned long long result = 0,value;
  84
  85         if (!base) {
  86                 base = 10;
  87                 if (*cp == '0') {
  88                         base = 8;
  89                         cp++;
  90                         if ((toupper(*cp) == 'X') && isxdigit(cp[1])) {
  91                                 cp++;
  92                                 base = 16;
  93                         }
  94                 }
  95         } else if (base == 16) {
  96                 if (cp[0] == '0' && toupper(cp[1]) == 'X')
  97                         cp += 2;
  98         }
  99         while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp)
 100             ? toupper(*cp) : *cp)-'A'+10) < base) {
 101                 result = result*base + value;
 102                 cp++;
 103         }
 104         if (endp)
 105                 *endp = (char *)cp;
 106         return result;
 107 }
 108
 109
 110 /**
 111  * simple_strtoll - convert a string to a signed long long
 112  * @cp: The start of the string
 113  * @endp: A pointer to the end of the parsed string will be placed here
 114  * @base: The number base to use
 115  */
 116 long long simple_strtoll(const char *cp,char **endp,unsigned int base)
 117 {
 118         if(*cp=='-')
 119                 return -simple_strtoull(cp+1,endp,base);
 120         return simple_strtoull(cp,endp,base);
 121 }
 122
 123 static int skip_atoi(const char **s)
 124 {
 125         int i=0;
 126
 127         while (isdigit(**s))
 128                 i = i*10 + *((*s)++) - '0';
 129         return i;
 130 }
 131
 132 #define ZEROPAD 1               /* pad with zero */
 133 #define SIGN    2               /* unsigned/signed long */
 134 #define PLUS    4               /* show plus */
 135 #define SPACE   8               /* space if plus */
 136 #define LEFT    16              /* left justified */
 137 #define SPECIAL 32              /* 0x */
 138 #define LARGE   64              /* use 'ABCDEF' instead of 'abcdef' */
 139
 140 static char * number(char * buf, char * end, unsigned long long num, int base, int size, int precision, int type)
 141 {
 142         char c,sign,tmp[66];
 143         const char *digits;
 144         static const char small_digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
 145         static const char large_digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 146         int i;
 147
 148         digits = (type & LARGE) ? large_digits : small_digits;
 149         if (type & LEFT)
 150                 type &= ~ZEROPAD;
 151         if (base < 2 || base > 36)
 152                 return NULL;
 153         c = (type & ZEROPAD) ? '0' : ' ';
 154         sign = 0;
 155         if (type & SIGN) {
 156                 if ((signed long long) num < 0) {
 157                         sign = '-';
 158                         num = - (signed long long) num;
 159                         size--;
 160                 } else if (type & PLUS) {
 161                         sign = '+';
 162                         size--;
 163                 } else if (type & SPACE) {
 164                         sign = ' ';
 165                         size--;
 166                 }
 167         }
 168         if (type & SPECIAL) {
 169                 if (base == 16)
 170                         size -= 2;
 171                 else if (base == 8)
 172                         size--;
 173         }
 174         i = 0;
 175         if (num == 0)
 176                 tmp[i++]='0';
 177         else while (num != 0)
 178                 tmp[i++] = digits[do_div(num,base)];
 179         if (i > precision)
 180                 precision = i;
 181         size -= precision;
 182         if (!(type&(ZEROPAD+LEFT))) {
 183                 while(size-->0) {
 184                         if (buf <= end)
 185                                 *buf = ' ';
 186                         ++buf;
 187                 }
 188         }
 189         if (sign) {
 190                 if (buf <= end)
 191                         *buf = sign;
 192                 ++buf;
 193         }
 194         if (type & SPECIAL) {
 195                 if (base==8) {
 196                         if (buf <= end)
 197                                 *buf = '0';
 198                         ++buf;
 199                 } else if (base==16) {
 200                         if (buf <= end)
 201                                 *buf = '0';
 202                         ++buf;
 203                         if (buf <= end)
 204                                 *buf = digits[33];
 205                         ++buf;
 206                 }
 207         }
 208         if (!(type & LEFT)) {
 209                 while (size-- > 0) {
 210                         if (buf <= end)
 211                                 *buf = c;
 212                         ++buf;
 213                 }
 214         }
 215         while (i < precision--) {
 216                 if (buf <= end)
 217                         *buf = '0';
 218                 ++buf;
 219         }
 220         while (i-- > 0) {
 221                 if (buf <= end)
 222                         *buf = tmp[i];
 223                 ++buf;
 224         }
 225         while (size-- > 0) {
 226                 if (buf <= end)
 227                         *buf = ' ';
 228                 ++buf;
 229         }
 230         return buf;
 231 }
 232
 233 /**
 234  * vsnprintf - Format a string and place it in a buffer
 235  * @buf: The buffer to place the result into
 236  * @size: The size of the buffer, including the trailing null space
 237  * @fmt: The format string to use
 238  * @args: Arguments for the format string
 239  *
 240  * The return value is the number of characters which would
 241  * be generated for the given input, excluding the trailing
 242  * '\0', as per ISO C99. If you want to have the exact
 243  * number of characters written into @buf as return value
 244  * (not including the trailing '\0'), use vscnprintf. If the
 245  * return is greater than or equal to @size, the resulting
 246  * string is truncated.
 247  *
 248  * Call this function if you are already dealing with a va_list.
 249  * You probably want snprintf instead.
 250  */
 251 int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
 252 {
 253         int len;
 254         unsigned long long num;
 255         int i, base;
 256         char *str, *end, c;
 257         const char *s;
 258
 259         int flags;              /* flags to number() */
 260
 261         int field_width;        /* width of output field */
 262         int precision;          /* min. # of digits for integers; max
 263                                    number of chars for from string */
 264         int qualifier;          /* 'h', 'l', or 'L' for integer fields */
 265                                 /* 'z' support added 23/7/1999 S.H.    */
 266                                 /* 'z' changed to 'Z' --davidm 1/25/99 */
 267                                 /* 't' added for ptrdiff_t */
 268
 269         /* Reject out-of-range values early */
 270         if ((int) size < 0) {
 271                 return 0;
 272         }
 273
 274         str = buf;
 275         end = buf + size - 1;
 276
 277         if (end < buf - 1) {
 278                 end = ((void *) -1);
 279                 size = end - buf + 1;
 280         }
 281
 282         for (; *fmt ; ++fmt) {
 283                 if (*fmt != '%') {
 284                         if (str <= end)
 285                                 *str = *fmt;
 286                         ++str;
 287                         continue;
 288                 }
 289
 290                 /* process flags */
 291                 flags = 0;
 292                 repeat:
 293                         ++fmt;          /* this also skips first '%' */
 294                         switch (*fmt) {
 295                                 case '-': flags |= LEFT; goto repeat;
 296                                 case '+': flags |= PLUS; goto repeat;
 297                                 case ' ': flags |= SPACE; goto repeat;
 298                                 case '#': flags |= SPECIAL; goto repeat;
 299                                 case '0': flags |= ZEROPAD; goto repeat;
 300                         }
 301
 302                 /* get field width */
 303                 field_width = -1;
 304                 if (isdigit(*fmt))
 305                         field_width = skip_atoi(&fmt);
 306                 else if (*fmt == '*') {
 307                         ++fmt;
 308                         /* it's the next argument */
 309                         field_width = va_arg(args, int);
 310                         if (field_width < 0) {
 311                                 field_width = -field_width;
 312                                 flags |= LEFT;
 313                         }
 314                 }
 315
 316                 /* get the precision */
 317                 precision = -1;
 318                 if (*fmt == '.') {
 319                         ++fmt;
 320                         if (isdigit(*fmt))
 321                                 precision = skip_atoi(&fmt);
 322                         else if (*fmt == '*') {
 323                                 ++fmt;
 324                                 /* it's the next argument */
 325                                 precision = va_arg(args, int);
 326                         }
 327                         if (precision < 0)
 328                                 precision = 0;
 329                 }
 330
 331                 /* get the conversion qualifier */
 332                 qualifier = -1;
 333                 if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
 334                     *fmt =='Z' || *fmt == 'z' || *fmt == 't') {
 335                         qualifier = *fmt;
 336                         ++fmt;
 337                         if (qualifier == 'l' && *fmt == 'l') {
 338                                 qualifier = 'L';
 339                                 ++fmt;
 340                         }
 341                 }
 342
 343                 /* default base */
 344                 base = 10;
 345
 346                 switch (*fmt) {
 347                         case 'c':
 348                                 if (!(flags & LEFT)) {
 349                                         while (--field_width > 0) {
 350                                                 if (str <= end)
 351                                                         *str = ' ';
 352                                                 ++str;
 353                                         }
 354                                 }
 355                                 c = (unsigned char) va_arg(args, int);
 356                                 if (str <= end)
 357                                         *str = c;
 358                                 ++str;
 359                                 while (--field_width > 0) {
 360                                         if (str <= end)
 361                                                 *str = ' ';
 362                                         ++str;
 363                                 }
 364                                 continue;
 365
 366                         case 's':
 367                                 s = va_arg(args, char *);
 368
 369                                 len = strnlen(s, precision);
 370
 371                                 if (!(flags & LEFT)) {
 372                                         while (len < field_width--) {
 373                                                 if (str <= end)
 374                                                         *str = ' ';
 375                                                 ++str;
 376                                         }
 377                                 }
 378                                 for (i = 0; i < len; ++i) {
 379                                         if (str <= end)
 380                                                 *str = *s;
 381                                         ++str; ++s;
 382                                 }
 383                                 while (len < field_width--) {
 384                                         if (str <= end)
 385                                                 *str = ' ';
 386                                         ++str;
 387                                 }
 388                                 continue;
 389
 390                         case 'p':
 391                                 if (field_width == -1) {
 392                                         field_width = 2*sizeof(void *);
 393                                         flags |= ZEROPAD;
 394                                 }
 395                                 str = number(str, end,
 396                                                 (unsigned long) va_arg(args, void *),
 397                                                 16, field_width, precision, flags);
 398                                 continue;
 399
 400
 401                         case 'n':
 402                                 /* FIXME:
 403                                 * What does C99 say about the overflow case here? */
 404                                 if (qualifier == 'l') {
 405                                         long * ip = va_arg(args, long *);
 406                                         *ip = (str - buf);
 407                                 } else if (qualifier == 'Z' || qualifier == 'z') {
 408                                         size_t * ip = va_arg(args, size_t *);
 409                                         *ip = (str - buf);
 410                                 } else {
 411                                         int * ip = va_arg(args, int *);
 412                                         *ip = (str - buf);
 413                                 }
 414                                 continue;
 415
 416                         case '%':
 417                                 if (str <= end)
 418                                         *str = '%';
 419                                 ++str;
 420                                 continue;
 421
 422                                 /* integer number formats - set up the flags and "break" */
 423                         case 'o':
 424                                 base = 8;
 425                                 break;
 426
 427                         case 'X':
 428                                 flags |= LARGE;
 429                         case 'x':
 430                                 base = 16;
 431                                 break;
 432
 433                         case 'd':
 434                         case 'i':
 435                                 flags |= SIGN;
 436                         case 'u':
 437                                 break;
 438
 439                         default:
 440                                 if (str <= end)
 441                                         *str = '%';
 442                                 ++str;
 443                                 if (*fmt) {
 444                                         if (str <= end)
 445                                                 *str = *fmt;
 446                                         ++str;
 447                                 } else {
 448                                         --fmt;
 449                                 }
 450                                 continue;
 451                 }
 452                 if (qualifier == 'L')
 453                         num = va_arg(args, long long);
 454                 else if (qualifier == 'l') {
 455                         num = va_arg(args, unsigned long);
 456                         if (flags & SIGN)
 457                                 num = (signed long) num;
 458                 } else if (qualifier == 'Z' || qualifier == 'z') {
 459                         num = va_arg(args, size_t);
 460                 } else if (qualifier == 't') {
 461                         num = va_arg(args, ptrdiff_t);
 462                 } else if (qualifier == 'h') {
 463                         num = (unsigned short) va_arg(args, int);
 464                         if (flags & SIGN)
 465                                 num = (signed short) num;
 466                 } else {
 467                         num = va_arg(args, unsigned int);
 468                         if (flags & SIGN)
 469                                 num = (signed int) num;
 470                 }
 471                 str = number(str, end, num, base,
 472                                 field_width, precision, flags);
 473         }
 474         if (str <= end)
 475                 *str = '\0';
 476         else if (size > 0)
 477                 /* don't write out a null byte if the buf size is zero */
 478                 *end = '\0';
 479         /* the trailing null byte doesn't count towards the total
 480         * ++str;
 481         */
 482         return str-buf;
 483 }
 484
 485
 486 /**
 487  * vscnprintf - Format a string and place it in a buffer
 488  * @buf: The buffer to place the result into
 489  * @size: The size of the buffer, including the trailing null space
 490  * @fmt: The format string to use
 491  * @args: Arguments for the format string
 492  *
 493  * The return value is the number of characters which have been written into
 494  * the @buf not including the trailing '\0'. If @size is <= 0 the function
 495  * returns 0.
 496  *
 497  * Call this function if you are already dealing with a va_list.
 498  * You probably want scnprintf instead.
 499  */
 500 int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
 501 {
 502         unsigned int i;
 503
 504         i=vsnprintf(buf,size,fmt,args);
 505         return (i >= size) ? (size - 1) : i;
 506 }
 507
 508
 509 /**
 510  * snprintf - Format a string and place it in a buffer
 511  * @buf: The buffer to place the result into
 512  * @size: The size of the buffer, including the trailing null space
 513  * @fmt: The format string to use
 514  * @...: Arguments for the format string
 515  *
 516  * The return value is the number of characters which would be
 517  * generated for the given input, excluding the trailing null,
 518  * as per ISO C99.  If the return is greater than or equal to
 519  * @size, the resulting string is truncated.
 520  */
 521 int snprintf(char * buf, size_t size, const char *fmt, ...)
 522 {
 523         va_list args;
 524         int i;
 525
 526         va_start(args, fmt);
 527         i=vsnprintf(buf,size,fmt,args);
 528         va_end(args);
 529         return i;
 530 }
 531
 532
 533 /**
 534  * scnprintf - Format a string and place it in a buffer
 535  * @buf: The buffer to place the result into
 536  * @size: The size of the buffer, including the trailing null space
 537  * @fmt: The format string to use
 538  * @...: Arguments for the format string
 539  *
 540  * The return value is the number of characters written into @buf not including
 541  * the trailing '\0'. If @size is <= 0 the function returns 0. If the return is
 542  * greater than or equal to @size, the resulting string is truncated.
 543  */
 544
 545 int scnprintf(char * buf, size_t size, const char *fmt, ...)
 546 {
 547         va_list args;
 548         unsigned int i;
 549
 550         va_start(args, fmt);
 551         i = vsnprintf(buf, size, fmt, args);
 552         va_end(args);
 553         return (i >= size) ? (size - 1) : i;
 554 }
 555
 556 /**
 557  * vsprintf - Format a string and place it in a buffer
 558  * @buf: The buffer to place the result into
 559  * @fmt: The format string to use
 560  * @args: Arguments for the format string
 561  *
 562  * The function returns the number of characters written
 563  * into @buf. Use vsnprintf or vscnprintf in order to avoid
 564  * buffer overflows.
 565  *
 566  * Call this function if you are already dealing with a va_list.
 567  * You probably want sprintf instead.
 568  */
 569 int vsprintf(char *buf, const char *fmt, va_list args)
 570 {
 571         return vsnprintf(buf, INT_MAX, fmt, args);
 572 }
 573
 574
 575 /**
 576  * sprintf - Format a string and place it in a buffer
 577  * @buf: The buffer to place the result into
 578  * @fmt: The format string to use
 579  * @...: Arguments for the format string
 580  *
 581  * The function returns the number of characters written
 582  * into @buf. Use snprintf or scnprintf in order to avoid
 583  * buffer overflows.
 584  */
 585 int sprintf(char * buf, const char *fmt, ...)
 586 {
 587         va_list args;
 588         int i;
 589
 590         va_start(args, fmt);
 591         i=vsnprintf(buf, INT_MAX, fmt, args);
 592         va_end(args);
 593         return i;
 594 }
 595
 596
 597 /**
 598  * vsscanf - Unformat a buffer into a list of arguments
 599  * @buf:        input buffer
 600  * @fmt:        format of buffer
 601  * @args:       arguments
 602  */
 603 int vsscanf(const char * buf, const char * fmt, va_list args)
 604 {
 605         const char *str = buf;
 606         char *next;
 607         char digit;
 608         int num = 0;
 609         int qualifier;
 610         int base;
 611         int field_width;
 612         int is_sign = 0;
 613
 614         while(*fmt && *str) {
 615                 /* skip any white space in format */
 616                 /* white space in format matchs any amount of
 617                  * white space, including none, in the input.
 618                  */
 619                 if (isspace(*fmt)) {
 620                         while (isspace(*fmt))
 621                                 ++fmt;
 622                         while (isspace(*str))
 623                                 ++str;
 624                 }
 625
 626                 /* anything that is not a conversion must match exactly */
 627                 if (*fmt != '%' && *fmt) {
 628                         if (*fmt++ != *str++)
 629                                 break;
 630                         continue;
 631                 }
 632
 633                 if (!*fmt)
 634                         break;
 635                 ++fmt;
 636
 637                 /* skip this conversion.
 638                  * advance both strings to next white space
 639                  */
 640                 if (*fmt == '*') {
 641                         while (!isspace(*fmt) && *fmt)
 642                                 fmt++;
 643                         while (!isspace(*str) && *str)
 644                                 str++;
 645                         continue;
 646                 }
 647
 648                 /* get field width */
 649                 field_width = -1;
 650                 if (isdigit(*fmt))
 651                         field_width = skip_atoi(&fmt);
 652
 653                 /* get conversion qualifier */
 654                 qualifier = -1;
 655                 if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
 656                     *fmt == 'Z' || *fmt == 'z') {
 657                         qualifier = *fmt++;
 658                         if (qualifier == *fmt) {
 659                                 if (qualifier == 'h') {
 660                                         qualifier = 'H';
 661                                         fmt++;
 662                                 } else if (qualifier == 'l') {
 663                                         qualifier = 'L';
 664                                         fmt++;
 665                                 }
 666                         }
 667                 }
 668                 base = 10;
 669                 is_sign = 0;
 670
 671                 if (!*fmt || !*str)
 672                         break;
 673
 674                 switch(*fmt++) {
 675                 case 'c':
 676                 {
 677                         char *s = (char *) va_arg(args,char*);
 678                         if (field_width == -1)
 679                                 field_width = 1;
 680                         do {
 681                                 *s++ = *str++;
 682                         } while (--field_width > 0 && *str);
 683                         num++;
 684                 }
 685                 continue;
 686                 case 's':
 687                 {
 688                         char *s = (char *) va_arg(args, char *);
 689                         if(field_width == -1)
 690                                 field_width = INT_MAX;
 691                         /* first, skip leading white space in buffer */
 692                         while (isspace(*str))
 693                                 str++;
 694
 695                         /* now copy until next white space */
 696                         while (*str && !isspace(*str) && field_width--) {
 697                                 *s++ = *str++;
 698                         }
 699                         *s = '\0';
 700                         num++;
 701                 }
 702                 continue;
 703                 case 'n':
 704                         /* return number of characters read so far */
 705                 {
 706                         int *i = (int *)va_arg(args,int*);
 707                         *i = str - buf;
 708                 }
 709                 continue;
 710                 case 'o':
 711                         base = 8;
 712                         break;
 713                 case 'x':
 714                 case 'X':
 715                         base = 16;
 716                         break;
 717                 case 'i':
 718                         base = 0;
 719                 case 'd':
 720                         is_sign = 1;
 721                 case 'u':
 722                         break;
 723                 case '%':
 724                         /* looking for '%' in str */
 725                         if (*str++ != '%')
 726                                 return num;
 727                         continue;
 728                 default:
 729                         /* invalid format; stop here */
 730                         return num;
 731                 }
 732
 733                 /* have some sort of integer conversion.
 734                  * first, skip white space in buffer.
 735                  */
 736                 while (isspace(*str))
 737                         str++;
 738
 739                 digit = *str;
 740                 if (is_sign && digit == '-')
 741                         digit = *(str + 1);
 742
 743                 if (!digit
 744                     || (base == 16 && !isxdigit(digit))
 745                     || (base == 10 && !isdigit(digit))
 746                     || (base == 8 && (!isdigit(digit) || digit > '7'))
 747                     || (base == 0 && !isdigit(digit)))
 748                                 break;
 749
 750                 switch(qualifier) {
 751                 case 'H':       /* that's 'hh' in format */
 752                         if (is_sign) {
 753                                 signed char *s = (signed char *) va_arg(args,signed char *);
 754                                 *s = (signed char) simple_strtol(str,&next,base);
 755                         } else {
 756                                 unsigned char *s = (unsigned char *) va_arg(args, unsigned char *);
 757                                 *s = (unsigned char) simple_strtoul(str, &next, base);
 758                         }
 759                         break;
 760                 case 'h':
 761                         if (is_sign) {
 762                                 short *s = (short *) va_arg(args,short *);
 763                                 *s = (short) simple_strtol(str,&next,base);
 764                         } else {
 765                                 unsigned short *s = (unsigned short *) va_arg(args, unsigned short *);
 766                                 *s = (unsigned short) simple_strtoul(str, &next, base);
 767                         }
 768                         break;
 769                 case 'l':
 770                         if (is_sign) {
 771                                 long *l = (long *) va_arg(args,long *);
 772                                 *l = simple_strtol(str,&next,base);
 773                         } else {
 774                                 unsigned long *l = (unsigned long*) va_arg(args,unsigned long*);
 775                                 *l = simple_strtoul(str,&next,base);
 776                         }
 777                         break;
 778                 case 'L':
 779                         if (is_sign) {
 780                                 long long *l = (long long*) va_arg(args,long long *);
 781                                 *l = simple_strtoll(str,&next,base);
 782                         } else {
 783                                 unsigned long long *l = (unsigned long long*) va_arg(args,unsigned long long*);
 784                                 *l = simple_strtoull(str,&next,base);
 785                         }
 786                         break;
 787                 case 'Z':
 788                 case 'z':
 789                 {
 790                         size_t *s = (size_t*) va_arg(args,size_t*);
 791                         *s = (size_t) simple_strtoul(str,&next,base);
 792                 }
 793                 break;
 794                 default:
 795                         if (is_sign) {
 796                                 int *i = (int *) va_arg(args, int*);
 797                                 *i = (int) simple_strtol(str,&next,base);
 798                         } else {
 799                                 unsigned int *i = (unsigned int*) va_arg(args, unsigned int*);
 800                                 *i = (unsigned int) simple_strtoul(str,&next,base);
 801                         }
 802                         break;
 803                 }
 804                 num++;
 805
 806                 if (!next)
 807                         break;
 808                 str = next;
 809         }
 810         return num;
 811 }
 812
 813
 814 /**
 815  * sscanf - Unformat a buffer into a list of arguments
 816  * @buf:        input buffer
 817  * @fmt:        formatting of buffer
 818  * @...:        resulting arguments
 819  */
 820 int sscanf(const char * buf, const char * fmt, ...)
 821 {
 822         va_list args;
 823         int i;
 824
 825         va_start(args,fmt);
 826         i = vsscanf(buf,fmt,args);
 827         va_end(args);
 828         return i;
 829 }
 830