FreeBSD/Linux Kernel Cross Reference
sys/dev/dec/dec_boot.h

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

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