firmware/lib/string.c

   1 /*
   2  *  linux/lib/string.c
   3  *
   4  *  Copyright (C) 1991, 1992  Linus Torvalds
   5  */
   6
   7 /*
   8  * stupid library routines.. The optimized versions should generally be found
   9  * as inline code in <asm-xx/string.h>
  10  *
  11  * These are buggy as well..
  12  *
  13  * * Fri Jun 25 1999, Ingo Oeser <ioe@informatik.tu-chemnitz.de>
  14  * -  Added strsep() which will replace strtok() soon (because strsep() is
  15  *    reentrant and should be faster). Use only strsep() in new code, please.
  16  *
  17  * * Sat Feb 09 2002, Jason Thomas <jason@topic.com.au>,
  18  *                    Matthew Hawkins <matt@mh.dropbear.id.au>
  19  * -  Kissed strtok() goodbye
  20  */
  21
  22 #include <sys/types.h>
  23 #include <string.h>
  24 #include <asm/ctype.h>
  25
  26
  27 #ifndef __HAVE_ARCH_STRNLEN
  28 /**
  29  * strnlen - Find the length of a length-limited string
  30  * @s: The string to be sized
  31  * @count: The maximum number of bytes to search
  32  */
  33 size_t strnlen(const char *s, size_t count)
  34 {
  35         const char *sc;
  36
  37         for (sc = s; count-- && *sc != '\0'; ++sc)
  38                 /* nothing */;
  39         return sc - s;
  40 }
  41 #endif