/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
/* All Rights Reserved */

/*
 * (c) Copyright INTERACTIVE Systems Corporation 1986, 1988, 1990
 * All rights reserved.
 */

#ifndef _SYS_DKTP_ALTSCTR_H
#define _SYS_DKTP_ALTSCTR_H

#ifdef  __cplusplus
extern "C" {
#endif

/*      alternate sector partition information table                    */
struct  alts_parttbl {
        uint32_t        alts_sanity;    /* to validate correctness      */
        uint32_t        alts_version;   /* version number               */
        uint32_t        alts_map_base;  /* disk offset of alts_partmap  */
        uint32_t        alts_map_len;   /* byte length of alts_partmap  */
        uint32_t        alts_ent_base;  /* disk offset of alts_entry    */
        uint32_t        alts_ent_used;  /* number of alternate entries used */
        uint32_t        alts_ent_end;   /* disk offset of top of alts_entry */
        uint32_t        alts_resv_base; /* disk offset of alts_reserved */
        uint32_t        alts_pad[5];    /* reserved fields              */
};

/*      alternate sector remap entry table                              */
struct  alts_ent {
        uint32_t        bad_start;      /* starting bad sector number   */
        uint32_t        bad_end;        /* ending bad sector number     */
        uint32_t        good_start;     /* starting alternate sector to use */
};

/*      size of alternate partition table structure                     */
#define ALTS_PARTTBL_SIZE       sizeof (struct alts_parttbl)
/*      size of alternate entry table structure                         */
#define ALTS_ENT_SIZE   sizeof (struct alts_ent)

/*      definition for alternate sector partition sector map            */
#define ALTS_GOOD       0       /* good alternate sectors               */
#define ALTS_BAD        1       /* bad alternate sectors                */

/*      definition for alternate sector partition id                    */
#define ALTS_SANITY     0xaabbccdd /* magic number to validate alts_part */
#define ALTS_VERSION1   0x01    /* version of alts_parttbl              */

#define ALTS_ENT_EMPTY  -1      /* empty alternate entry                */
#define ALTS_MAP_UP     1       /* search forward with increasing sect# */
#define ALTS_MAP_DOWN   -1      /* search backward with decreasing sect# */

#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_DKTP_ALTSCTR_H */