Miscellany

        struct pollfd fds[1];

        fds[0].fd = s->fd;
        fds[0].events = POLLIN;
        fds[0].revents = 0;
        res = poll(fds, 1, -1);

        if (res < 0) {
                if (errno != EINTR)
                {
                        log("poll() returned error: %s\n", strerror(errno));
                        return res;
                }
        }
        if (fds[0].revents) {
                memset(s->inbuf,0,sizeof(s->inbuf));
                res = read(s->fd, s->inbuf, 4);
                if (res < 0) {
                        log("failed on read() with res=%d, errno=%d", res, errno);
                        return res;
                }
        }


failed on read() #1 with res=-1, errno=104