/* Copyright 2004 Renzo Davoli
 * Reseased under the GPLv2 */

#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_tun.h>

static int tun_alloc(char *dev)
{
	struct ifstat ifs;
	int fd, err;

	if( (fd = open("/dev/tap", O_RDWR)) < 0 )
		return (-1);

	memset(&ifs, 0, sizeof(ifs));

	if( (err = ioctl(fd, SIOCGIFSTATUS, (void *) &ifs)) < 0 ){
		close(fd);
		return err;
	}
	printf("ioctl returns\n");
	puts(ifs.ascii);
	printf("ioctl idev\n");
	return fd;
}              

char interface[IFNAMSIZ]="tap0";

main()
{
	tun_alloc(interface);
	pause();
}