The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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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_ */

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