a47e2eb758
http://mail-index.netbsd.org/tech-userlevel/2011/08/25/msg005404.html This is used by disk tools such as disklabel(8) to dynamically decide is the undelyling platform uses a disklabel-in-mbr-partition or not (instead of using a compile-time list of ports). getlabelusesmbr() reads the sysctl kern.labelusesmbr, takes its value from the machdep #define LABELUSESMBR. For evbmips, make LABELUSESMBR 1 if the platform uses pmon as bootloader, and 0 (the previous value) otherwise.
56 lines
2.5 KiB
C
56 lines
2.5 KiB
C
/* $NetBSD: disklabel.h,v 1.3 2011/08/30 12:39:53 bouyer Exp $ */
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/*
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* Copyright (c) 1994 Christian E. Hopps
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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 Christian E. Hopps.
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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 LABELUSESMBR 0 /* no MBR partitionning */
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#define LABELSECTOR 0 /* sector containing label */
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#define LABELOFFSET 64 /* offset of label in sector */
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#define MAXPARTITIONS 16 /* number of partitions */
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#define RAW_PART 2 /* raw partition: xx?c */
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/* Pull in RDB partition definitions. */
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#if HAVE_NBTOOL_CONFIG_H
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#include <nbinclude/sys/disklabel_rdb.h>
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#else
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#include <sys/disklabel_rdb.h>
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#endif /* HAVE_NBTOOL_CONFIG_H */
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struct cpu_disklabel {
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u_long rdblock; /* may be RDBNULL which invalidates */
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u_long pblist[MAXPARTITIONS]; /* partblock number (RDB list order) */
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int pbindex[MAXPARTITIONS]; /* index of pblock (partition order) */
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int valid; /* essential that this is valid */
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};
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#endif /* _MACHINE_DISKLABEL_H_ */
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