#define _POSIX_C_SOURCE 200809L
//#define _GNU_SOURCE
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>
#include <errno.h>

/* "somedir" should be an existing subdirectory of the current directory */

int main(int argc, char* argv[]){
		int fd=open("somedir", O_RDONLY|O_PATH|O_DIRECTORY);
//		int fd=open("somedir", O_RDONLY|O_DIRECTORY);
		if(fd == -1){
				fprintf(stderr, "open: %d\n", errno);
				exit(1);
		}
		DIR* dir=fdopendir(fd);
//		DIR* dir=opendir("somedir");
		if(dir == NULL){
				fprintf(stderr, "fdopendir: %d\n", errno);
				exit(1);
		}
		struct dirent* de;
		errno=0;
		de=readdir(dir);
		if(de == NULL && errno){
				fprintf(stderr, "readdir: %d\n", errno);
				exit(1);
		}
}