Add a hack (ported from NetBSD) to support Sun disk labels.
This code works by converting the Sun label to a struct disklabel, which is probably even the right thing for reading a label. The original checksum is taken over, so that the label source can be distinguished. The NetBSD code to wrap a BSD-style disklabel into the Sun disklabel has been deleted for now - don't know whether that is really desirable, after all Sun disklabels could just be used always (BSD disklabels are going to have problems with PROM compatability). The dsinit() call in diskopen() has been #ifdef'ed out for now, this will be changed to use the minimal slice struct in case of dsinit() failure. Submitted by: tmm Obtained from: NetBSD
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David E. O'Brien
parent
a9caffba47
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39ebfeb05b
101
sys/sys/sun_disklabel.h
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101
sys/sys/sun_disklabel.h
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)sun_disklabel.h 8.1 (Berkeley) 6/11/93
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* $NetBSD: disklabel.h,v 1.2 1998/08/22 14:55:28 mrg Exp $
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*
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* $FreeBSD$
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*/
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/*
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* SunOS disk label layout (only relevant portions discovered here).
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*/
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#define SUN_DKMAGIC 55998
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/* geometry info */
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struct sun_dkgeom {
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u_short sdkc_ncylinders; /* data cylinders */
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u_short sdkc_acylinders; /* alternate cylinders */
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u_short sdkc_xxx1;
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u_short sdkc_ntracks; /* tracks per cylinder */
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u_short sdkc_xxx2;
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u_short sdkc_nsectors; /* sectors per track */
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u_short sdkc_interleave; /* interleave factor */
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u_short sdkc_xxx3;
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u_short sdkc_xxx4;
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u_short sdkc_sparespercyl; /* spare sectors per cylinder */
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u_short sdkc_rpm; /* rotational speed */
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u_short sdkc_pcylinders; /* physical cylinders */
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u_short sdkc_xxx5[7];
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};
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/* controller info */
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struct sun_dkctlr {
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int sdkc_addr; /* controller address */
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short sdkc_unit; /* unit (slave) address */
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short sdkc_type; /* controller type */
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short sdkc_flags; /* flags */
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};
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/* partition info */
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struct sun_dkpart {
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u_int32_t sdkp_cyloffset; /* starting cylinder */
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u_int32_t sdkp_nsectors; /* number of sectors */
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};
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struct sun_disklabel { /* total size = 512 bytes */
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char sl_text[128];
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char sl_xxx1[292];
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u_int16_t sl_rpm; /* rotational speed */
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u_int16_t sl_pcylinders; /* number of physical cyls */
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u_int16_t sl_sparespercyl; /* spare sectors per cylinder */
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char sl_xxx3[4];
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u_int16_t sl_interleave; /* interleave factor */
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u_int16_t sl_ncylinders; /* data cylinders */
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u_int16_t sl_acylinders; /* alternate cylinders */
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u_int16_t sl_ntracks; /* tracks per cylinder */
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u_int16_t sl_nsectors; /* sectors per track */
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char sl_xxx4[4];
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struct sun_dkpart sl_part[8]; /* partition layout */
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u_int16_t sl_magic; /* == SUN_DKMAGIC */
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u_int16_t sl_cksum; /* xor checksum of all shorts */
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};
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