#include <stdio.h>
#include <fcntl.h>
#include <sys/types.h>
#include <errno.h>
#include <unistd.h>

/*
 * use open on a directory
 */

int main(int ac, char *av[])
{
	int	fd;

	if ( ac >  1 ){
		fd = open( av[1], O_RDONLY );
		printf("open %s returns %d\n", av[1], fd);
		printf("errno is %d\n", errno);
		if ( fd >= 0 ){
			char	buf[BUFSIZ];
			int n = read(fd, buf, 10);
			printf("read returns %d\n", n);
			if ( n == -1 )
				perror("read says:");
		}
	}
	return 0;
}