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directory data
--------------


what needs to be stored:
	filename, inode #

struct dir_entry {
	unsigned short rec-len;
	unsigned char fname_len;
	unsigned int inode;
	chaf fname[MAX_DIRNAM];
};

cycling through all directs: opendir; readdir till there, closedir

open_inode(inode);

open_file(inode) {
	if (dir) error;
	return open_inode;
}

opendir(inode) {
	if (!dir) error;
	return open_inode;
}