09dbb89b44
This allows use of subr_disk_mbr on all archs. Default to it for the rump disk component. No functional change for regular kernels. (The other option would've been to include dkbad in disklabels everywhere, but arguably this approach has less possible side-effects, especially given that wedges and related magic will take over the world any second now).
76 lines
3.1 KiB
C
76 lines
3.1 KiB
C
/* $NetBSD: disklabel.h,v 1.9 2009/11/23 13:40:10 pooka Exp $ */
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/*
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* Copyright (c) 1994 Christopher G. Demetriou
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* All rights reserved.
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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 Christopher G. Demetriou.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MACHINE_DISKLABEL_H_
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#define _MACHINE_DISKLABEL_H_
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#define LABELSECTOR 1 /* sector containing label */
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#define LABELOFFSET 0 /* offset of label in sector */
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#define MAXPARTITIONS 16 /* number of partitions */
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#define OLDMAXPARTITIONS 8 /* number of partitions before 1.6 */
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#define RAW_PART 3 /* raw partition: XX?d (XXX) */
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/*
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* We use the highest bit of the minor number for the partition number.
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* This maintains backward compatibility with device nodes created before
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* MAXPARTITIONS was increased.
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*/
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#define __HPCMIPS_MAXDISKS ((1 << 20) / MAXPARTITIONS)
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#define DISKUNIT(dev) ((minor(dev) / OLDMAXPARTITIONS) % __HPCMIPS_MAXDISKS)
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#define DISKPART(dev) ((minor(dev) % OLDMAXPARTITIONS) + \
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((minor(dev) / (__HPCMIPS_MAXDISKS * OLDMAXPARTITIONS)) * OLDMAXPARTITIONS))
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#define DISKMINOR(unit, part) \
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(((unit) * OLDMAXPARTITIONS) + ((part) % OLDMAXPARTITIONS) + \
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((part) / OLDMAXPARTITIONS) * (__HPCMIPS_MAXDISKS * OLDMAXPARTITIONS))
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/* Pull in MBR partition definitions. */
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#if HAVE_NBTOOL_CONFIG_H
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#include <nbinclude/sys/bootblock.h>
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#else
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#include <sys/bootblock.h>
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#endif /* HAVE_NBTOOL_CONFIG_H */
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#ifndef __ASSEMBLER__
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#if HAVE_NBTOOL_CONFIG_H
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#include <nbinclude/sys/dkbad.h>
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#else
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#include <sys/dkbad.h>
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#endif /* HAVE_NBTOOL_CONFIG_H */
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struct cpu_disklabel {
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struct mbr_partition dosparts[MBR_PART_COUNT];
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#define __HAVE_DISKLABEL_DKBAD
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struct dkbad bad;
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};
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#endif
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#endif /* _MACHINE_DISKLABEL_H_ */
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