/* Simple recurive open test
 *
 * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */

#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <dirent.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>

void process(int dirfd, const char *filename);

void process_dir(int dirfd, const char *filename)
{
	struct dirent *de;
	DIR *dir;
	int fd;

	dir = fdopendir(dirfd);
	if (dir) {
		while (de = readdir(dir)) {
			if (de->d_name[0] == '.' &&
			    (de->d_name[1] == '\0' ||
			     de->d_name[1] == '.' && de->d_name[2] == '\0'))
				continue;
			process(dirfd, de->d_name);
		}

		closedir(dir);
	}
}

void process(int dirfd, const char *filename)
{
	struct stat st;
	int fd;

	if (fstatat(dirfd, filename, &st, AT_SYMLINK_NOFOLLOW) >= 0) {
		if (S_ISREG(st.st_mode)) {
			fd = openat(dirfd, filename, O_RDONLY);
			if (fd >= 0)
				close(fd);
		} else if (S_ISDIR(st.st_mode)) {
			fd = openat(dirfd, filename, O_RDONLY | O_DIRECTORY);
			if (fd >= 0)
				process_dir(fd, filename);
		}
	}
}

int main(int argc, char **argv)
{
	for (argv++; *argv; argv++)
		process(AT_FDCWD, *argv);
	return 0;
}