#include <stdio.h>
#include <sys/mount.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
extern int errno;


int main(int argc, char* argv[])
{
	if(argc != 2)
	{
		printf("usage: umount.special <mountpoint>\n");
		return(1);
	}

	if(strstr(argv[1],getenv("HOME")) == NULL)
	{
		printf("You cannot umount filesystems outside your home directory\n");
		return(2);
	}

	int retval = umount2(argv[1],2);
	if(retval != 0)
	{
		printf("%s\n",strerror(errno));
	}
	return(retval);
}