text: #ifndef _LINUX_STRING_H_
  #define _LINUX_STRING_H_
  
  #include <linux/types.h>	/* for size_t */
  #include <linux/stddef.h>	/* for NULL */
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  
  /*
   * Include machine specific inline routines
   */
  #include <asm/string.h>
  
  #ifndef __HAVE_ARCH_STRTOK
  extern char * ___strtok;
  extern char * strpbrk(const char *,const char *);
  extern char * strtok(char *,const char *);
  extern char * strsep(char **,const char *);
  extern __kernel_size_t strspn(const char *,const char *);
  #endif
  
  #ifndef __HAVE_ARCH_STRCPY
  extern char * strcpy(char *,const char *);
  #endif
  #ifndef __HAVE_ARCH_STRNCPY
  extern char * strncpy(char *,const char *, __kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRCAT
  extern char * strcat(char *, const char *);
  #endif
  #ifndef __HAVE_ARCH_STRNCAT
  extern char * strncat(char *, const char *, __kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRCMP
  extern int strcmp(const char *,const char *);
  #endif
  #ifndef __HAVE_ARCH_STRNCMP
  extern int strncmp(const char *,const char *,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRNICMP
  extern int strnicmp(const char *, const char *, __kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRCHR
  extern char * strchr(const char *,int);
  #endif
  #ifndef __HAVE_ARCH_STRRCHR
  extern char * strrchr(const char *,int);
  #endif
  #ifndef __HAVE_ARCH_STRSTR
  extern char * strstr(const char *,const char *);
  #endif
  #ifndef __HAVE_ARCH_STRLEN
  extern __kernel_size_t strlen(const char *);
  #endif
  #ifndef __HAVE_ARCH_STRNLEN
  extern __kernel_size_t strnlen(const char *,__kernel_size_t);
  #endif
  
  #ifndef __HAVE_ARCH_MEMSET
  extern void * memset(void *,int,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMCPY
  extern void * memcpy(void *,const void *,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMMOVE
  extern void * memmove(void *,const void *,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMSCAN
  extern void * memscan(void *,int,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMCMP
  extern int memcmp(const void *,const void *,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMCHR
  extern void * memchr(const void *,int,__kernel_size_t);
  #endif
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* _LINUX_STRING_H_ */
  