Home | History | Annotate | Line # | Download | only in sun
disklabel.h revision 1.2 
      1 /*	$NetBSD: disklabel.h,v 1.2 1998/08/22 14:55:28 mrg Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This software was developed by the Computer Systems Engineering group
      8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      9  * contributed to Berkeley.
     10  *
     11  * All advertising materials mentioning features or use of this software
     12  * must display the following acknowledgement:
     13  *	This product includes software developed by the University of
     14  *	California, Lawrence Berkeley Laboratory.
     15  *
     16  * Redistribution and use in source and binary forms, with or without
     17  * modification, are permitted provided that the following conditions
     18  * are met:
     19  * 1. Redistributions of source code must retain the above copyright
     20  *    notice, this list of conditions and the following disclaimer.
     21  * 2. Redistributions in binary form must reproduce the above copyright
     22  *    notice, this list of conditions and the following disclaimer in the
     23  *    documentation and/or other materials provided with the distribution.
     24  * 3. All advertising materials mentioning features or use of this software
     25  *    must display the following acknowledgement:
     26  *	This product includes software developed by the University of
     27  *	California, Berkeley and its contributors.
     28  * 4. Neither the name of the University nor the names of its contributors
     29  *    may be used to endorse or promote products derived from this software
     30  *    without specific prior written permission.
     31  *
     32  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     33  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     34  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     35  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     36  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     40  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     41  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     42  * SUCH DAMAGE.
     43  *
     44  *	@(#)sun_disklabel.h	8.1 (Berkeley) 6/11/93
     45  */
     46 
     47 /*
     48  * SunOS disk label layout (only relevant portions discovered here).
     49  */
     50 
     51 #define	SUN_DKMAGIC	55998
     52 
     53 /* These are the guys that Sun's dkinfo needs... */
     54 #define DKIOCGGEOM	_IOR('d', 2, struct sun_dkgeom)	/* geometry info */
     55 #define DKIOCINFO	_IOR('d', 8, struct sun_dkctlr)	/* controller info */
     56 #define DKIOCGPART	_IOR('d', 4, struct sun_dkpart)	/* partition info */
     57 
     58 /* geometry info */
     59 struct sun_dkgeom {
     60 	u_short	sdkc_ncylinders;	/* data cylinders */
     61 	u_short	sdkc_acylinders;	/* alternate cylinders */
     62 	u_short	sdkc_xxx1;
     63 	u_short	sdkc_ntracks;		/* tracks per cylinder */
     64 	u_short	sdkc_xxx2;
     65 	u_short	sdkc_nsectors;		/* sectors per track */
     66 	u_short	sdkc_interleave;	/* interleave factor */
     67 	u_short	sdkc_xxx3;
     68 	u_short	sdkc_xxx4;
     69 	u_short	sdkc_sparespercyl;	/* spare sectors per cylinder */
     70 	u_short	sdkc_rpm;		/* rotational speed */
     71 	u_short	sdkc_pcylinders;	/* physical cylinders */
     72 	u_short	sdkc_xxx5[7];
     73 };
     74 
     75 /* controller info */
     76 struct sun_dkctlr {
     77 	int	sdkc_addr;		/* controller address */
     78 	short	sdkc_unit;		/* unit (slave) address */
     79 	short	sdkc_type;		/* controller type */
     80 	short	sdkc_flags;		/* flags */
     81 };
     82 
     83 /* partition info */
     84 struct sun_dkpart {
     85 	int	sdkp_cyloffset;		/* starting cylinder */
     86 	int	sdkp_nsectors;		/* number of sectors */
     87 };
     88 
     89 struct sun_disklabel {			/* total size = 512 bytes */
     90 	char	sl_text[128];
     91 	char	sl_xxx1[292];
     92 #define sl_bsdlabel	sl_xxx1		/* Embedded NetBSD label */
     93 	u_short sl_rpm;			/* rotational speed */
     94 	u_short	sl_pcylinders;		/* number of physical cyls */
     95 #define	sl_pcyl	 sl_pcylinders		/* XXX: old sun3 */
     96 	u_short sl_sparespercyl;	/* spare sectors per cylinder */
     97 	char	sl_xxx3[4];
     98 	u_short sl_interleave;		/* interleave factor */
     99 	u_short	sl_ncylinders;		/* data cylinders */
    100 	u_short	sl_acylinders;		/* alternate cylinders */
    101 	u_short	sl_ntracks;		/* tracks per cylinder */
    102 	u_short	sl_nsectors;		/* sectors per track */
    103 	char	sl_xxx4[4];
    104 	struct sun_dkpart sl_part[8];	/* partition layout */
    105 	u_short	sl_magic;		/* == SUN_DKMAGIC */
    106 	u_short	sl_cksum;		/* xor checksum of all shorts */
    107 };
    108 
    109 #define SUN_LABELOFFSET	128		/* XXX we don't use this */
    110