120 lines
4.3 KiB
C
120 lines
4.3 KiB
C
/* $NetBSD: filecore.h,v 1.2 1998/08/14 18:04:04 mark Exp $ */
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/*-
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* Copyright (c) 1998 Andrew McMurry
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* Copyright (c) 1994 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* filecore.h 1.0 1998/6/1
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*/
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/*
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* Definitions describing Acorn Filecore file system structure, as well as
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* the functions necessary to access fields of filecore file system
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* structures.
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*/
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#define FILECORE_BOOTBLOCK_BLKN 6
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#define FILECORE_BOOTBLOCK_SIZE 0x200
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#define FILECORE_BB_DISCREC 0x1C0
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#define FILECORE_DISCREC_SIZE 60
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#define FILECORE_DIR_SIZE 2048
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#define FILECORE_DIRENT_SIZE 26
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#define FILECORE_MAXDIRENTS 77
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#define FILECORE_ROOTINO 0xFFFFFFFF
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#define FILECORE_INO_MASK 0x00FFFFFF
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#define FILECORE_INO_INDEX 24
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#define FILECORE_ATTR_READ 1
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#define FILECORE_ATTR_WRITE 2
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#define FILECORE_ATTR_DIR 8
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#define FILECORE_ATTR_OREAD 32
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#define FILECORE_ATTR_OWRITE 64
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#if 0
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#define FILECORE_DEBUG
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#define FILECORE_DEBUG_BR
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#endif
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struct filecore_disc_record {
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unsigned log2secsize:8; /* base 2 log of the sector size */
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unsigned secspertrack:8; /* number of sectors per track */
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unsigned heads:8; /* number of heads */
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unsigned density:8; /* 0: harddisc, else floppy density */
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unsigned idlen:8; /* length of fragment id in bits */
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unsigned log2bpmb:8; /* base 2 log of the bytes per FAU */
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unsigned skew:8; /* track to sector skew */
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unsigned bootoption:8; /* *OPT option */
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unsigned lowsector:8; /* lowest sector id on a track */
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unsigned nzones:8; /* number of zones in the map */
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unsigned zone_spare:16; /* number of non-map bits per zone */
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unsigned root; /* address of root directory */
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unsigned disc_size; /* disc size in bytes (low word) */
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unsigned disc_id:16; /* disc cycle id */
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char disc_name[10]; /* disc name */
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unsigned disc_type; /* disc type */
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unsigned disc_size_2; /* disc size in bytes (high word) */
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unsigned share_size:8; /* base 2 log sharing granularity */
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unsigned big_flag:8; /* 1 if disc > 512Mb */
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char reserved[18];
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};
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struct filecore_direntry {
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char name[10];
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unsigned load:32;
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unsigned exec:32;
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unsigned len:32;
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unsigned addr:24;
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unsigned attr:8;
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};
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struct filecore_dirhead {
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unsigned mas_seq:8;
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unsigned chkname:32;
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};
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struct filecore_dirtail {
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unsigned lastmark:8;
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unsigned reserved:16;
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unsigned parent1:16;
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unsigned parent2:8;
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char title[19];
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char name[10];
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unsigned mas_seq:8;
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unsigned chkname:32;
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unsigned checkbyte:8;
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};
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#define fcdirhead(dp) ((struct filecore_dirhead *)(dp))
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#define fcdirentry(dp,n) (((struct filecore_direntry *)(((char *)(dp))+5))+(n))
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#define fcdirtail(dp) ((struct filecore_dirtail *)(((char *)(dp))+2007))
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