1 /* $NetBSD: filecore.h,v 1.1 2002/12/23 17:30:40 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 Andrew McMurry 5 * Copyright (c) 1994 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * filecore.h 1.0 1998/6/1 37 */ 38 39 /* 40 * Definitions describing Acorn Filecore file system structure, as well as 41 * the functions necessary to access fields of filecore file system 42 * structures. 43 */ 44 45 #define FILECORE_BOOTBLOCK_BLKN 6 46 #define FILECORE_BOOTBLOCK_SIZE 0x200 47 #define FILECORE_BB_DISCREC 0x1C0 48 #define FILECORE_DISCREC_SIZE 60 49 #define FILECORE_DIR_SIZE 2048 50 #define FILECORE_DIRENT_SIZE 26 51 #define FILECORE_MAXDIRENTS 77 52 53 #define FILECORE_ROOTINO 0xFFFFFFFF 54 #define FILECORE_INO_MASK 0x00FFFFFF 55 #define FILECORE_INO_INDEX 24 56 57 #define FILECORE_ATTR_READ 1 58 #define FILECORE_ATTR_WRITE 2 59 #define FILECORE_ATTR_DIR 8 60 #define FILECORE_ATTR_OREAD 32 61 #define FILECORE_ATTR_OWRITE 64 62 63 #if 0 64 #define FILECORE_DEBUG 65 #define FILECORE_DEBUG_BR 66 #endif 67 68 struct filecore_disc_record { 69 unsigned log2secsize:8; /* base 2 log of the sector size */ 70 unsigned secspertrack:8; /* number of sectors per track */ 71 unsigned heads:8; /* number of heads */ 72 unsigned density:8; /* 0: harddisc, else floppy density */ 73 unsigned idlen:8; /* length of fragment id in bits */ 74 unsigned log2bpmb:8; /* base 2 log of the bytes per FAU */ 75 unsigned skew:8; /* track to sector skew */ 76 unsigned bootoption:8; /* *OPT option */ 77 unsigned lowsector:8; /* lowest sector id on a track */ 78 unsigned nzones:8; /* number of zones in the map */ 79 unsigned zone_spare:16; /* number of non-map bits per zone */ 80 unsigned root; /* address of root directory */ 81 unsigned disc_size; /* disc size in bytes (low word) */ 82 unsigned disc_id:16; /* disc cycle id */ 83 char disc_name[10]; /* disc name */ 84 unsigned disc_type; /* disc type */ 85 unsigned disc_size_2; /* disc size in bytes (high word) */ 86 unsigned share_size:8; /* base 2 log sharing granularity */ 87 unsigned big_flag:8; /* 1 if disc > 512Mb */ 88 char reserved[18]; 89 }; 90 91 struct filecore_direntry { 92 char name[10]; 93 unsigned load:32; 94 unsigned exec:32; 95 unsigned len:32; 96 unsigned addr:24; 97 unsigned attr:8; 98 }; 99 100 struct filecore_dirhead { 101 unsigned mas_seq:8; 102 unsigned chkname:32; 103 }; 104 105 struct filecore_dirtail { 106 unsigned lastmark:8; 107 unsigned reserved:16; 108 unsigned parent1:16; 109 unsigned parent2:8; 110 char title[19]; 111 char name[10]; 112 unsigned mas_seq:8; 113 unsigned chkname:32; 114 unsigned checkbyte:8; 115 }; 116 117 #define fcdirhead(dp) ((struct filecore_dirhead *)(dp)) 118 #define fcdirentry(dp,n) (((struct filecore_direntry *)(((char *)(dp))+5))+(n)) 119 #define fcdirtail(dp) ((struct filecore_dirtail *)(((char *)(dp))+2007)) 120