1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
28/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
29/* All Rights Reserved */
30
31/*
32 * (c) Copyright INTERACTIVE Systems Corporation 1986, 1988, 1990
33 * All rights reserved.
34 */
35
36#ifndef _SYS_DKTP_ALTSCTR_H
37#define	_SYS_DKTP_ALTSCTR_H
38
39#ifdef	__cplusplus
40extern "C" {
41#endif
42
43/*	alternate sector partition information table			*/
44struct	alts_parttbl {
45	uint32_t	alts_sanity;	/* to validate correctness	*/
46	uint32_t  	alts_version;	/* version number		*/
47	uint32_t	alts_map_base;	/* disk offset of alts_partmap	*/
48	uint32_t	alts_map_len;	/* byte length of alts_partmap	*/
49	uint32_t	alts_ent_base;	/* disk offset of alts_entry	*/
50	uint32_t	alts_ent_used;	/* number of alternate entries used */
51	uint32_t	alts_ent_end;	/* disk offset of top of alts_entry */
52	uint32_t	alts_resv_base;	/* disk offset of alts_reserved	*/
53	uint32_t 	alts_pad[5];	/* reserved fields		*/
54};
55
56/*	alternate sector remap entry table				*/
57struct	alts_ent {
58	uint32_t	bad_start;	/* starting bad sector number	*/
59	uint32_t	bad_end;	/* ending bad sector number	*/
60	uint32_t	good_start;	/* starting alternate sector to use */
61};
62
63/*	size of alternate partition table structure			*/
64#define	ALTS_PARTTBL_SIZE	sizeof (struct alts_parttbl)
65/*	size of alternate entry table structure				*/
66#define	ALTS_ENT_SIZE	sizeof (struct alts_ent)
67
68/*	definition for alternate sector partition sector map		*/
69#define	ALTS_GOOD	0	/* good alternate sectors		*/
70#define	ALTS_BAD	1	/* bad alternate sectors		*/
71
72/*	definition for alternate sector partition id			*/
73#define	ALTS_SANITY	0xaabbccdd /* magic number to validate alts_part */
74#define	ALTS_VERSION1	0x01	/* version of alts_parttbl		*/
75
76#define	ALTS_ENT_EMPTY	-1	/* empty alternate entry		*/
77#define	ALTS_MAP_UP	1	/* search forward with increasing sect# */
78#define	ALTS_MAP_DOWN	-1	/* search backward with decreasing sect# */
79
80#ifdef	__cplusplus
81}
82#endif
83
84#endif	/* _SYS_DKTP_ALTSCTR_H */
85