/*
   gcc readdir.c -o readdir -Wall
*/
#include <stdio.h>
#include <errno.h>
#include <dirent.h>

int main(int argc, char **argv)
{
	DIR *dir = opendir(argv[1]);

	do {
		errno = 0;
	} while (readdir(dir) != NULL);
	printf("readdir() errno = %d\n", errno);
	return 0;
}