rem: rootfs_open(fs_cookie _fs, fs_vnode _v, int oflags, file_cookie *_cookie)
add: rootfs_open(fs_volume _fs, fs_vnode _v, int oflags, fs_cookie *_cookie)
context: rootfs_open(fs_cookie _fs, fs_vnode _v, int oflags, file_cookie *_cookie){	// allow to open the file, but it can't be done anything with it	*_cookie = NULL;		// initialize the cookie, because rootfs_free_cookie() relies on it	return B_OK;}