FreeBSD/Linux Kernel Cross Reference
sys/dev/sun/disklabel.h

     /*      $NetBSD: disklabel.h,v 1.3 2003/08/07 16:31:23 agc Exp $ */
     
     /*
      * Copyright (c) 1992, 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * This software was developed by the Computer Systems Engineering group
      * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      * contributed to Berkeley.
     *
     * All advertising materials mentioning features or use of this software
     * must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Lawrence Berkeley Laboratory.
     *
     * 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.
     *
     *      @(#)sun_disklabel.h     8.1 (Berkeley) 6/11/93
     */
    
    /*
     * SunOS disk label layout (only relevant portions discovered here).
     */
    
    #define SUN_DKMAGIC     55998
    
    /* These are the guys that Sun's dkinfo needs... */
    #define DKIOCGGEOM      _IOR('d', 2, struct sun_dkgeom) /* geometry info */
    #define DKIOCINFO       _IOR('d', 8, struct sun_dkctlr) /* controller info */
    #define DKIOCGPART      _IOR('d', 4, struct sun_dkpart) /* partition info */
    
    /* geometry info */
    struct sun_dkgeom {
            u_short sdkc_ncylinders;        /* data cylinders */
            u_short sdkc_acylinders;        /* alternate cylinders */
            u_short sdkc_xxx1;
            u_short sdkc_ntracks;           /* tracks per cylinder */
            u_short sdkc_xxx2;
            u_short sdkc_nsectors;          /* sectors per track */
            u_short sdkc_interleave;        /* interleave factor */
            u_short sdkc_xxx3;
            u_short sdkc_xxx4;
            u_short sdkc_sparespercyl;      /* spare sectors per cylinder */
            u_short sdkc_rpm;               /* rotational speed */
            u_short sdkc_pcylinders;        /* physical cylinders */
            u_short sdkc_xxx5[7];
    };
    
    /* controller info */
    struct sun_dkctlr {
            int     sdkc_addr;              /* controller address */
            short   sdkc_unit;              /* unit (slave) address */
            short   sdkc_type;              /* controller type */
            short   sdkc_flags;             /* flags */
    };
    
    /* partition info */
    struct sun_dkpart {
            int     sdkp_cyloffset;         /* starting cylinder */
            int     sdkp_nsectors;          /* number of sectors */
    };
    
    struct sun_disklabel {                  /* total size = 512 bytes */
            char    sl_text[128];
            char    sl_xxx1[292];
    #define sl_bsdlabel     sl_xxx1         /* Embedded NetBSD label */
            u_short sl_rpm;                 /* rotational speed */
            u_short sl_pcylinders;          /* number of physical cyls */
    #define sl_pcyl  sl_pcylinders          /* XXX: old sun3 */
            u_short sl_sparespercyl;        /* spare sectors per cylinder */
            char    sl_xxx3[4];
            u_short sl_interleave;          /* interleave factor */
            u_short sl_ncylinders;          /* data cylinders */
            u_short sl_acylinders;          /* alternate cylinders */
            u_short sl_ntracks;             /* tracks per cylinder */
            u_short sl_nsectors;            /* sectors per track */
            char    sl_xxx4[4];
           struct sun_dkpart sl_part[8];   /* partition layout */
           u_short sl_magic;               /* == SUN_DKMAGIC */
           u_short sl_cksum;               /* xor checksum of all shorts */
   };
   
   #define SUN_LABELOFFSET 128             /* XXX we don't use this */

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