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FreeBSD/Linux Kernel Cross Reference
sys/sys/sun_disklabel.h

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    1 /*-
    2  * Copyright (c) 1992, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  * Copyright (c) 2004,2005 Joerg Wunsch
    5  *
    6  * This software was developed by the Computer Systems Engineering group
    7  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
    8  * contributed to Berkeley.
    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  * 4. 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  *      @(#)sun_disklabel.h     8.1 (Berkeley) 6/11/93
   35  *      $NetBSD: disklabel.h,v 1.2 1998/08/22 14:55:28 mrg Exp $
   36  *
   37  * $FreeBSD: src/sys/sys/sun_disklabel.h,v 1.11 2005/03/30 09:33:10 joerg Exp $ 
   38  */
   39 
   40 #ifndef _SYS_SUN_DISKLABEL_H_
   41 #define _SYS_SUN_DISKLABEL_H_
   42 
   43 /*
   44  * SunOS/Solaris disk label layout (partial).
   45  * 
   46  * Suns disk label format contains a lot of historical baggage which we 
   47  * ignore entirely.  The structure below contains the relevant bits and the
   48  * _enc/_dec functions encode/decode only these fields.
   49  */
   50 
   51 #define SUN_DKMAGIC     55998
   52 #define SUN_NPART       8
   53 #define SUN_RAWPART     2
   54 #define SUN_SIZE        512
   55 #define SUN_VTOC_VERSION 1
   56 #define SUN_VTOC_SANE   0x600DDEEE /* SVR4-compatible VTOC is "sane". */
   57 #define SUN_VOLNAME_LEN 8
   58 /*
   59  * XXX: I am actually not sure if this should be "16 sectors" or "8192 bytes".
   60  * XXX: Considering that Sun went to the effort of getting 512 byte compatible
   61  * XXX: CDROM drives produced my guess is that Sun computers stand little or
   62  * XXX: even no chance of running, much less booting on !=512 byte media.
   63  * XXX: Define this is in terms of bytes since that is easier for us.
   64  */
   65 #define SUN_BOOTSIZE    8192
   66 
   67 /* partition info */
   68 struct sun_dkpart {
   69         u_int32_t       sdkp_cyloffset;         /* starting cylinder */
   70         u_int32_t       sdkp_nsectors;          /* number of sectors */
   71 };
   72 
   73 struct sun_vtoc_info {
   74         u_int16_t       svtoc_tag;              /* partition tag */
   75         u_int16_t       svtoc_flag;             /* partition flags */
   76 };
   77 
   78 /* known partition tag values */
   79 #define VTOC_UNASSIGNED 0x00
   80 #define VTOC_BOOT       0x01
   81 #define VTOC_ROOT       0x02
   82 #define VTOC_SWAP       0x03
   83 #define VTOC_USR        0x04
   84 #define VTOC_BACKUP     0x05    /* "c" partition, covers entire disk */
   85 #define VTOC_STAND      0x06
   86 #define VTOC_VAR        0x07
   87 #define VTOC_HOME       0x08
   88 #define VTOC_ALTSCTR    0x09    /* alternate sector partition */
   89 #define VTOC_CACHE      0x0a    /* Solaris cachefs partition */
   90 #define VTOC_VXVM_PUB   0x0e    /* VxVM public region */
   91 #define VTOC_VXVM_PRIV  0x0f    /* VxVM private region */
   92 
   93 /* VTOC partition flags */
   94 #define VTOC_UNMNT      0x01    /* unmountable partition */
   95 #define VTOC_RONLY      0x10    /* partition is read/only */
   96 
   97 struct sun_disklabel {
   98         char            sl_text[128];
   99 
  100         /* SVR4 VTOC information */
  101         u_int32_t       sl_vtoc_vers;           /* == SUN_VTOC_VERSION */
  102         char            sl_vtoc_volname[SUN_VOLNAME_LEN];
  103         u_int16_t       sl_vtoc_nparts;         /* == SUN_NPART */
  104         struct sun_vtoc_info sl_vtoc_map[SUN_NPART]; /* partition tag/flag */
  105         u_int32_t       sl_vtoc_sane;           /* == SUN_VTOC_SANE */
  106 
  107         /* Sun label information */
  108         u_int16_t       sl_rpm;                 /* rotational speed */
  109         u_int16_t       sl_pcylinders;          /* number of physical cyls */
  110         u_int16_t       sl_sparespercyl;        /* spare sectors per cylinder */
  111         u_int16_t       sl_interleave;          /* interleave factor */
  112         u_int16_t       sl_ncylinders;          /* data cylinders */
  113         u_int16_t       sl_acylinders;          /* alternate cylinders */
  114         u_int16_t       sl_ntracks;             /* tracks per cylinder */
  115         u_int16_t       sl_nsectors;            /* sectors per track */
  116         struct sun_dkpart sl_part[SUN_NPART];   /* partition layout */
  117         u_int16_t       sl_magic;               /* == SUN_DKMAGIC */
  118 };
  119 
  120 int sunlabel_dec(void const *pp, struct sun_disklabel *sl);
  121 void sunlabel_enc(void *pp, struct sun_disklabel *sl);
  122 
  123 #endif /* _SYS_SUN_DISKLABEL_H_ */

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