disklabel.h revision 1.5
1/* $NetBSD: disklabel.h,v 1.5 1998/10/30 06:48:51 scottr Exp $ */ 2 3/* 4 * Copyright (c) 1994 Christopher G. Demetriou 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christopher G. Demetriou. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32/*- 33 * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo, 34 * Michael L. Finch, Bradley A. Grantham, and 35 * Lawrence A. Kesteloot 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the Alice Group. 49 * 4. The names of the Alice Group or any of its members may not be used 50 * to endorse or promote products derived from this software without 51 * specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR 54 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 56 * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT, 57 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 58 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 * 64 */ 65 66#ifndef _MACHINE_DISKLABEL_H_ 67#define _MACHINE_DISKLABEL_H_ 68 69#define LABELSECTOR 0 /* sector containing label */ 70#define LABELOFFSET 64 /* offset of label in sector */ 71#define MAXPARTITIONS 8 /* number of partitions */ 72#define RAW_PART 2 /* raw partition: xx?c */ 73 74/* DOS partition table -- located in boot block */ 75#define DOSBBSECTOR 0 /* DOS boot block relative sector # */ 76#define DOSPARTOFF 446 77#define NDOSPART 4 78 79struct dos_partition { 80 u_int8_t dp_flag; /* bootstrap flags */ 81 u_int8_t dp_shd; /* starting head */ 82 u_int8_t dp_ssect; /* starting sector */ 83 u_int8_t dp_scyl; /* starting cylinder */ 84 u_int8_t dp_typ; /* partition type (see below) */ 85 u_int8_t dp_ehd; /* end head */ 86 u_int8_t dp_esect; /* end sector */ 87 u_int8_t dp_ecyl; /* end cylinder */ 88 u_int32_t dp_start; /* absolute starting sector number */ 89 u_int32_t dp_size; /* partition size in sectors */ 90}; 91 92/* Known DOS partition types. */ 93#define DOSPTYP_NETBSD 0xa9 /* NetBSD/i386 partition type (XXX) */ 94#define DOSPTYP_386BSD 0xa5 /* 386BSD partition type (XXX) */ 95#define DOSPTYP_FAT12 0x01 /* 12-bit FAT */ 96#define DOSPTYP_FAT16S 0x04 /* 16-bit FAT, less than 32M */ 97#define DOSPTYP_FAT16B 0x06 /* 16-bit FAT, more than 32M */ 98#define DOSPTYP_FAT32 0x0b /* 32-bit FAT */ 99#define DOSPTYP_FAT32L 0x0c /* 32-bit FAT, LBA-mapped */ 100#define DOSPTYP_FAT16L 0x0e /* 16-bit FAT, LBA-mapped */ 101#define DOSPTYP_LNXEXT2 0x83 /* Linux native */ 102 103/* Just a dummy */ 104struct cpu_disklabel { 105 int cd_dummy; /* must have one element. */ 106}; 107 108/* 109 * Driver Descriptor Map, from Inside Macintosh: Devices, SCSI Manager 110 * pp 12-13. The driver descriptor map always resides on physical block 0. 111 */ 112struct drvr_descriptor { 113 u_int32_t descBlock; /* first block of driver */ 114 u_int16_t descSize; /* driver size in blocks */ 115 u_int16_t descType; /* system type */ 116}; 117 118/* system types; Apple reserves 0-15 */ 119#define DRVR_TYPE_MACINTOSH 1 120 121struct drvr_map { 122#define DRIVER_MAP_MAGIC 0x4552 123 u_int16_t sbSig; /* map signature */ 124 u_int16_t sbBlockSize; /* block size of device */ 125 u_int32_t sbBlkCount; /* number of blocks on device */ 126 u_int16_t sbDevType; /* (used internally by ROM) */ 127 u_int16_t sbDevID; /* (used internally by ROM) */ 128 u_int32_t sbData; /* (used internally by ROM) */ 129 u_int16_t sbDrvrCount; /* number of driver descriptors */ 130#define DRVR_MAX_DESCRIPTORS 61 131 struct drvr_descriptor sb_dd[DRVR_MAX_DESCRIPTORS]; 132 u_int16_t pad[3]; 133} __attribute__ ((packed)); 134 135#define ddBlock(N) sb_dd[(N)].descBlock 136#define ddSize(N) sb_dd[(N)].descSize 137#define ddType(N) sb_dd[(N)].descType 138 139/* 140 * Partition map structure from Inside Macintosh: Devices, SCSI Manager 141 * pp. 13-14. The partition map always begins on physical block 1. 142 * 143 * With the exception of block 0, all blocks on the disk must belong to 144 * exactly one partition. The partition map itself belongs to a partition 145 * of type `APPLE_PARTITION_MAP', and is not limited in size by anything 146 * other than available disk space. The partition map is not necessarily 147 * the first partition listed. 148 */ 149struct part_map_entry { 150#define PART_ENTRY_MAGIC 0x504d 151 u_int16_t pmSig; /* partition signature */ 152 u_int16_t pmSigPad; /* (reserved) */ 153 u_int32_t pmMapBlkCnt; /* number of blocks in partition map */ 154 u_int32_t pmPyPartStart; /* first physical block of partition */ 155 u_int32_t pmPartBlkCnt; /* number of blocks in partition */ 156 char pmPartName[32]; /* partition name */ 157 char pmPartType[32]; /* partition type */ 158 u_int32_t pmLgDataStart; /* first logical block of data area */ 159 u_int32_t pmDataCnt; /* number of blocks in data area */ 160 u_int32_t pmPartStatus; /* partition status information */ 161 u_int32_t pmLgBootStart; /* first logical block of boot code */ 162 u_int32_t pmBootSize; /* size of boot code, in bytes */ 163 u_int32_t pmBootLoad; /* boot code load address */ 164 u_int32_t pmBootLoad2; /* (reserved) */ 165 u_int32_t pmBootEntry; /* boot code entry point */ 166 u_int32_t pmBootEntry2; /* (reserved) */ 167 u_int32_t pmBootCksum; /* boot code checksum */ 168 char pmProcessor[16]; /* processor type (e.g. "68020") */ 169 u_int8_t pmBootArgs[128]; /* A/UX boot arguments */ 170 u_int8_t pad[248]; /* pad to end of block */ 171}; 172 173#define PART_TYPE_DRIVER "APPLE_DRIVER" 174#define PART_TYPE_DRIVER43 "APPLE_DRIVER43" 175#define PART_TYPE_DRIVERATA "APPLE_DRIVER_ATA" 176#define PART_TYPE_FWB_COMPONENT "FWB DRIVER COMPONENTS" 177#define PART_TYPE_MAC "APPLE_HFS" 178#define PART_TYPE_NETBSD "NETBSD" 179#define PART_TYPE_PARTMAP "APPLE_PARTITION_MAP" 180#define PART_TYPE_SCRATCH "APPLE_SCRATCH" 181#define PART_TYPE_UNIX "APPLE_UNIX_SVR2" 182 183/* 184 * "pmBootArgs" for APPLE_UNIX_SVR2 partition. 185 * NetBSD/mac68k only uses Magic, Cluster, Type, and Flags. 186 */ 187struct blockzeroblock { 188 u_int32_t bzbMagic; 189 u_int8_t bzbCluster; 190 u_int8_t bzbType; 191 u_int16_t bzbBadBlockInode; 192 u_int16_t bzbFlags; 193 u_int16_t bzbReserved; 194 u_int32_t bzbCreationTime; 195 u_int32_t bzbMountTime; 196 u_int32_t bzbUMountTime; 197}; 198 199#define BZB_MAGIC 0xABADBABE 200#define BZB_TYPEFS 1 201#define BZB_TYPESWAP 3 202#define BZB_ROOTFS 0x8000 203#define BZB_USRFS 0x4000 204 205#endif /* _MACHINE_DISKLABEL_H_ */ 206