static int unexec_open (char *filename, int flag, int mode);
static long unexec_seek (int fd, long position);
static void unexec_read (int fd, long position, char *buf, int bytes);
static int unexec_open (char *filename, int flag, int mode);
static long unexec_seek (int fd, long position);
static void unexec_read (int fd, long position, char *buf, int bytes);