/*
 * Copyright 2018, Xiang Fan, sfanxiang@gmail.com.
 * Distributed under the terms of the MIT License.
 */

#include <stdio.h>
#include <poll.h>


int main()
{
        FILE* f = fopen("/dev/null", "w");
        printf("f=%p\n", f);
        int fd = fileno(f);
        printf("fd=%d\n", fd);

        struct pollfd pfd;
        pfd.fd = fd;
        pfd.events = POLLOUT;
        pfd.revents = 0;

        int rv = poll(&pfd, 1, -1);
        printf("rv=%d\n", rv);
        if (rv <= 0)
                return 1;
        printf("events=%08x revents=%08x\n", pfd.events, pfd.revents);
        if (pfd.revents != POLLOUT)
                return 2;

        return 0;
}