extern _CLibFunc int _attribu2d(unsigned mode);
extern _CLibFunc int _locking(const int fd         ,const int cmd         ,const off_t offset         ,const long length);
extern _CLibFunc size_t _rw(const int mode    ,const int fd    ,void * const buf    ,const size_t length);
extern _CLibFunc int _truncate(const int fd);
extern _CLibFunc int chsize(const int fd       ,const off_t offset);
extern _CLibFunc int close(const int fd);
extern _CLibFunc int creat(char const * const fnam      ,const int mode);
extern _CLibFunc int dup(const int fd);
extern _CLibFunc int dup2(const int oldfd     ,const int newfd);
extern _CLibFunc long filelength(const int fd);
extern _CLibFunc int ioctl(int fd, int fct, void *argp, int argi);
extern _CLibFunc int isatty(int fd);
extern _CLibFunc int lock(const int fd     ,const off_t offset     ,const long length);
extern _CLibFunc int locking(const int fd        ,const int cmd        ,const long length);
extern _CLibFunc off_t lseek(const int fd      ,const off_t offset      ,const int whence);
extern _CLibFunc int open(char const * const fnam     ,const int omode     ,const int flags)		/* This parameter might not been passed */;
extern _CLibFunc size_t read(const int fd     ,void * const buf     ,const size_t length);
extern _CLibFunc int setmode(int fd, int mode);
extern _CLibFunc off_t tell(const int fd);
extern _CLibFunc int unlock(const int fd       ,const off_t offset       ,const long length);
extern _CLibFunc size_t write(const int fd      ,void * const buf      ,const size_t length);
