f984dbba70
. move mfs-specific struct, constants to mfs/, so mfs-specific, on-disk format structs and consts are fully isolated from generic structs and functions . removes de and readfs utils
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
/* dirent.h - Declarations for directory reading routines.
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* Author: Kees J. Bot
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* 24 Apr 1989
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*
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* Note: The V7 format directory entries used under Minix must be transformed
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* into a struct dirent with a d_name of at least 15 characters. Given that
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* we have to transform V7 entries anyhow it is little trouble to let the
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* routines understand the so-called "flex" directory format too.
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*/
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#ifndef _DIRENT_H
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#define _DIRENT_H
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#include <sys/cdefs.h>
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/* Name of length len needs _EXTENT(len) extra slots. */
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#define _EXTENT(len) (((len) + 5) >> 3)
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/* The block size must be at least 1024 bytes, because otherwise
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* the superblock (at 1024 bytes) overlaps with other filesystem data.
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*/
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#define _MIN_BLOCK_SIZE 1024
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/* The below is allocated in some parts of the system as the largest
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* a filesystem block can be. For instance, the boot monitor allocates
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* 3 of these blocks and has to fit within 64kB, so this can't be
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* increased without taking that into account.
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*/
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#define _MAX_BLOCK_SIZE 4096
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/* This is the block size for the fixed versions of the filesystem (V1/V2) */
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#define _STATIC_BLOCK_SIZE 1024
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#endif /* _DIRENT_H */
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