HardenedBSD/usr.sbin/pccard/pccardc/pccardmem.c

#include <stdio.h>
#include <sys/types.h>
#include <sys/ioctl.h>

#include <pccard/card.h>
int
pccardmem_main(argc, argv)
int	argc;
char	*argv[];
{
int addr = 0;
int	fd;

	if (argc > 2)
		{
		fprintf(stderr, "usage: %s [ memory-address ]\n", argv[0]);
		exit(1);
		}
	fd = open("/dev/card0", 0);
	if (fd < 0)
		{
		perror("/dev/card0");
		exit(1);
		}
	if (argc == 2)
		{
		if (sscanf(argv[1], "%x", &addr) != 1)
			{
			fprintf(stderr, "arg error\n");
			exit(1);
			}
		}
	if (ioctl(fd, PIOCRWMEM, &addr))
		perror("ioctl");
	else
		printf("PCCARD Memory address set to 0x%x\n", addr);
	exit(0);
}