#include <sys/types.h>
#include <sys/time.h>
#include <sys/device.h>
#include <sys/hotplug.h>

#include <err.h>
#include <fcntl.h>
#include <poll.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int
main(int argc, char *argv[])
{
#if 0
	struct kevent ev;
#endif
	struct hotplug_event he;
	char *device;
	int fd, kq, kev;
	
	if (argc == 2)
		device = argv[1];
	else
		device = "/dev/hotplug";

	fd = open(device, O_RDONLY);
	if (fd == -1)
		err(2, "open %s", device);
#if 0
	if ((kq = kqueue()) <= 0)
		err(2, "kqueue");

	EV_SET(&ev, fd, EVFILT_DEVICE, EV_ADD | EV_ENABLE | EV_CLEAR,
	    NOTE_CHG_DATA, 0, NULL);
	if (kevent(kq, &ev, 1, NULL, 0, NULL) < 0)
		err(2, "kevent init");
#endif
	while (1) {
#if 0
		struct pollfd fds;
		int result;

		fds.fd = kq;
		fds.events = POLLIN;
		result = poll(&fds, 1, INFTIM);
		printf("poll result %d\n", result);
#endif
		int n;
		n = read(fd, &he, sizeof(he));
		if (n == -1)
			err(2, "read");
		printf("hotplug event %d %d %s\n",
		    he.he_devclass, he.he_type, he.he_devname);
                if (he.he_devclass != DV_TTY)
                        continue;
                switch (he.he_type) {
                case HOTPLUG_DEVAT:
                        printf("wscons attach %s\n", he.he_devname);
                        break;
                case HOTPLUG_DEVDT:
                        printf("wscons detach %s\n", he.he_devname);
                        break;
                default:
                        break;
                }

	}
		
	return 0;
}