NetBSD/share/examples/pud/intro/doioctl.c

34 lines
528 B
C

/* $NetBSD: doioctl.c,v 1.1 2007/11/22 11:28:48 pooka Exp $ */
#include <sys/types.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <stdio.h>
#include "common.h"
int
main(int argc, char *argv[])
{
int fd, i;
if (argc != 3 && argc != 4)
errx(1, "args");
fd = open(argv[1], O_RDWR);
if (fd == -1)
err(1, "open");
i = atoi(argv[2]);
if (argc == 3)
if (ioctl(fd, INTROTOGGLE, &i) == -1)
err(1, "ioctl");
else
if (ioctl(fd, INTROTOGGLE_R, &i) == -1)
err(1, "ioctl");
printf("i is now %d\n", i);
}