int make_unix_socket(int style, bool nonblock, bool passcred,
const char *bind_path, const char *connect_path);
int get_unix_name_len(socklen_t sun_len);
int make_unix_socket(int style, bool nonblock, bool passcred,
const char *bind_path, const char *connect_path);
int get_unix_name_len(socklen_t sun_len);