81 lines
3.2 KiB
C
81 lines
3.2 KiB
C
/* $NetBSD: disklabel.h,v 1.2 1998/07/07 04:36:15 thorpej 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 0 /* sector containing label */
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#define LABELOFFSET 64 /* offset of label in sector */
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#define MAXPARTITIONS 8 /* number of partitions */
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#define RAW_PART 2 /* raw partition: xx?c */
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/* DOS partition table -- used when the system is booted from a dos
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* partition. This is the case on NT systems.
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*/
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#define DOSBBSECTOR 0 /* DOS boot block relative sector # */
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#define DOSPARTOFF 446
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#define NDOSPART 4
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struct dos_partition {
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u_int8_t dp_flag; /* bootstrap flags */
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u_int8_t dp_shd; /* starting head */
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u_int8_t dp_ssect; /* starting sector */
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u_int8_t dp_scyl; /* starting cylinder */
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u_int8_t dp_typ; /* partition type (see below) */
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u_int8_t dp_ehd; /* end head */
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u_int8_t dp_esect; /* end sector */
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u_int8_t dp_ecyl; /* end cylinder */
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u_int32_t dp_start; /* absolute starting sector number */
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u_int32_t dp_size; /* partition size in sectors */
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} dos_partitions[NDOSPART];
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/* Known DOS partition types. */
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#define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */
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#define DOSPTYP_NETBSD DOSPTYP_386BSD /* NetBSD partition type (XXX) */
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#include <sys/dkbad.h>
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struct cpu_disklabel {
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struct dos_partition dosparts[NDOSPART];
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struct dkbad bad;
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};
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/* Isolate the relevant bits to get sector and cylinder. */
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#define DPSECT(s) ((s) & 0x3f)
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#define DPCYL(c, s) ((c) + (((s) & 0xc0) << 2))
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#ifdef _KERNEL
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struct disklabel;
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int bounds_check_with_label __P((struct buf *, struct disklabel *, int));
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#endif
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#endif /* _MACHINE_DISKLABEL_H_ */
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