disklabel.h revision 1.12 
1/*	$OpenBSD: disklabel.h,v 1.12 2007/06/17 00:27:27 deraadt 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#ifndef _MACHINE_DISKLABEL_H_
34#define _MACHINE_DISKLABEL_H_
35
36#define	LABELSECTOR	1		/* sector containing label */
37#define	LABELOFFSET	0		/* offset of label in sector */
38#define	MAXPARTITIONS	16		/* number of partitions */
39
40/* HFS/DPME */
41
42/* partition map structure from Inside Macintosh: Devices, SCSI Manager
43 * pp. 13-14.  The partition map always begins on physical block 1.
44 *
45 * With the exception of block 0, all blocks on the disk must belong to
46 * exactly one partition.  The partition map itself belongs to a partition
47 * of type `APPLE_PARTITION_MAP', and is not limited in size by anything
48 * other than available disk space.  The partition map is not necessarily
49 * the first partition listed.
50 */
51struct part_map_entry {
52#define PART_ENTRY_MAGIC        0x504d
53	u_int16_t       pmSig;          /* partition signature */
54	u_int16_t       pmSigPad;       /* (reserved) */
55	u_int32_t       pmMapBlkCnt;    /* number of blocks in partition map */
56	u_int32_t       pmPyPartStart;  /* first physical block of partition */
57	u_int32_t       pmPartBlkCnt;   /* number of blocks in partition */
58	char            pmPartName[32]; /* partition name */
59	char            pmPartType[32]; /* partition type */
60	u_int32_t       pmLgDataStart;  /* first logical block of data area */
61	u_int32_t       pmDataCnt;      /* number of blocks in data area */
62	u_int32_t       pmPartStatus;   /* partition status information */
63	u_int32_t       pmLgBootStart;  /* first logical block of boot code */
64	u_int32_t       pmBootSize;     /* size of boot code, in bytes */
65	u_int32_t       pmBootLoad;     /* boot code load address */
66	u_int32_t       pmBootLoad2;    /* (reserved) */
67	u_int32_t       pmBootEntry;    /* boot code entry point */
68	u_int32_t       pmBootEntry2;   /* (reserved) */
69	u_int32_t       pmBootCksum;    /* boot code checksum */
70	char            pmProcessor[16]; /* processor type (e.g. "68020") */
71	u_int8_t        pmBootArgs[128]; /* A/UX boot arguments */
72	/* we do not index the disk image as an array,
73	 * leave out the on disk padding
74	 */
75#if 0
76	u_int8_t        pad[248];       /* pad to end of block */
77#endif
78};
79
80#define PART_TYPE_DRIVER        "APPLE_DRIVER"
81#define PART_TYPE_DRIVER43      "APPLE_DRIVER43"
82#define PART_TYPE_DRIVERATA     "APPLE_DRIVER_ATA"
83#define PART_TYPE_DRIVERIOKIT   "APPLE_DRIVER_IOKIT"
84#define PART_TYPE_FWDRIVER      "APPLE_FWDRIVER"
85#define PART_TYPE_FWB_COMPONENT "FWB DRIVER COMPONENTS"
86#define PART_TYPE_FREE          "APPLE_FREE"
87#define PART_TYPE_MAC           "APPLE_HFS"
88#define PART_TYPE_OPENBSD       "OPENBSD"
89
90
91struct cpu_disklabel {
92	/* only store first entry and openbsd partition */
93	struct part_map_entry macparts[2];
94};
95
96#endif /* _MACHINE_DISKLABEL_H_ */
97