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      1 /*	$NetBSD: dec_boot.h,v 1.7 2005/12/11 12:21:20 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Ralph Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)dec_boot.h	8.1 (Berkeley) 6/10/93
     35  *
     36  * from: Header: /sprite/src/kernel/dev/RCS/devDiskLabel.h,
     37  *	v 9.4 90/03/01 12:22:36 jhh Exp  SPRITE (Berkeley)
     38  */
     39 
     40 #ifndef _DEV_DEC_DEC_BOOT_H_
     41 #define _DEV_DEC_DEC_BOOT_H_
     42 
     43 /* The following describes the ULTRIX partition tables.
     44  */
     45 /*
     46  * DEC_NUM_DISK_PARTS is the number of partitions that are recorded in
     47  * the label information.  The size of the padding in the Dec_DiskLabel
     48  * type is dependent on this number...
     49  */
     50 #define DEC_NUM_DISK_PARTS	8
     51 
     52 /*
     53  * A disk is divided into partitions and this type specifies where a
     54  * partition starts and how many bytes it contains.
     55  */
     56 typedef struct dec_disk_map {
     57 	int32_t	num_blocks;	/* Number of 512 byte blocks in partition. */
     58 	int32_t	start_block;	/* Start of partition in blocks. */
     59 } dec_disk_map;
     60 
     61 /*
     62  * Label information on the 31st (DEC_LABEL_SECTOR) sector.
     63  */
     64 typedef struct dec_disklabel {
     65     u_int8_t	pad0[440];		/* DIFFERENT from sprite!!! */
     66     int32_t	magic;			/* DEC_LABEL_MAGIC */
     67     int32_t	is_partitioned;		/* 1 if disk is partitioned. */
     68     dec_disk_map map[DEC_NUM_DISK_PARTS]; /* Indicates disk partitions. */
     69 } dec_disklabel;
     70 
     71 #define DEC_LABEL_MAGIC		0x00032957
     72 #define DEC_LABEL_SECTOR	31
     73 
     74 #endif	/* !_DEV_DEC_DEC_BOOT_H_ */
     75