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/*
 * efs_dir.h
 *
 * Copyright (c) 1999 Al Smith
 */
 
#ifndef __EFS_DIR_H__
#define __EFS_DIR_H__
 
#define EFS_DIRBSIZE_BITS	EFS_BLOCKSIZE_BITS
#define EFS_DIRBSIZE		(1 << EFS_DIRBSIZE_BITS)
 
struct efs_dentry {
	unsigned int	inode;
	unsigned char	namelen;
	char		name[3];
};
 
#define EFS_DENTSIZE	(sizeof(struct efs_dentry) - 3 + 1)
#define EFS_MAXNAMELEN  ((1 << (sizeof(char) * 8)) - 1)
 
#define EFS_DIRBLK_HEADERSIZE	4
#define EFS_DIRBLK_MAGIC	0xbeef	/* moo */
 
struct efs_dir {
	unsigned short	magic;
	unsigned char	firstused;
	unsigned char	slots;
 
	unsigned char	space[EFS_DIRBSIZE - EFS_DIRBLK_HEADERSIZE];
};
 
#define EFS_MAXENTS \
	((EFS_DIRBSIZE - EFS_DIRBLK_HEADERSIZE) / \
	 (EFS_DENTSIZE + sizeof(char)))
 
#define EFS_SLOTAT(dir, slot) EFS_REALOFF((dir)->space[slot])
 
#define EFS_REALOFF(offset) ((offset << 1))
 
#endif /* __EFS_DIR_H__ */