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43 lines
844 B
C
43 lines
844 B
C
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/*
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* efs_dir.h
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*
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* Copyright (c) 1999 Al Smith
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*/
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#ifndef __EFS_DIR_H__
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#define __EFS_DIR_H__
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#define EFS_DIRBSIZE_BITS EFS_BLOCKSIZE_BITS
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#define EFS_DIRBSIZE (1 << EFS_DIRBSIZE_BITS)
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struct efs_dentry {
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__be32 inode;
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unsigned char namelen;
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char name[3];
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};
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#define EFS_DENTSIZE (sizeof(struct efs_dentry) - 3 + 1)
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#define EFS_MAXNAMELEN ((1 << (sizeof(char) * 8)) - 1)
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#define EFS_DIRBLK_HEADERSIZE 4
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#define EFS_DIRBLK_MAGIC 0xbeef /* moo */
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struct efs_dir {
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__be16 magic;
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unsigned char firstused;
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unsigned char slots;
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unsigned char space[EFS_DIRBSIZE - EFS_DIRBLK_HEADERSIZE];
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};
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#define EFS_MAXENTS \
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((EFS_DIRBSIZE - EFS_DIRBLK_HEADERSIZE) / \
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(EFS_DENTSIZE + sizeof(char)))
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#define EFS_SLOTAT(dir, slot) EFS_REALOFF((dir)->space[slot])
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#define EFS_REALOFF(offset) ((offset << 1))
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#endif /* __EFS_DIR_H__ */
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