prog_read
if (prog_read(sroute, buf, sizeof(buf)) < 0) {
n = prog_read(sock, &u, sizeof(u));
l = prog_read(sock,
l = prog_read(s, &m_rtmsg, sizeof(m_rtmsg));
l = prog_read(my_s, &m_rtmsg, sizeof(m_rtmsg));
if (prog_read(fd, &pev, sizeof(pev)) != sizeof(pev)) {
n = prog_read(rtsock, &buffer, sizeof(buffer));