100 lines
3.9 KiB
C
100 lines
3.9 KiB
C
/* $NetBSD: disklabel.h,v 1.1 1996/09/30 16:34:22 ws Exp $ */
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/*-
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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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 TooLs GmbH.
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* 4. The name of TooLs GmbH 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 TOOLS GMBH ``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 TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* 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 RAW_PART 2 /* raw partition: XX?c */
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/* MBR partition table */
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#define MBRSECTOR 0 /* MBR sector number */
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#define MBRPARTOFF 446 /* Offset of MBR partition table */
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#define NMBRPART 4 /* # of partitions in MBR */
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#define MBRMAGICOFF 510 /* Offset of magic number */
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#define MBRMAGIC 0xaa55 /* Actual magic number */
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struct mbr_partition {
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unsigned char mbr_flag; /* default boot flag */
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unsigned char mbr_shd; /* start head, IsN't Always Meaningful */
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unsigned char mbr_ssect; /* start sector, INAM */
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unsigned char mbr_scyl; /* start cylinder, INAM */
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unsigned char mbr_type; /* partition type */
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unsigned char mbr_ehd; /* end head, INAM */
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unsigned char mbr_esect; /* end sector, INAM */
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unsigned char mbr_ecyl; /* end cylinder, INAM */
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unsigned long mbr_start; /* absolute start sector number */
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unsigned long mbr_size; /* partition size in sectors */
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};
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/* Known partition types: */
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#define MBR_EXTENDED 0x05 /* Extended partition */
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#define MBR_NETBSD_LE 0xa5 /* NetBSD little endian partition */
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#define MBR_NETBSD_BE 0xa6 /* NetBSD big endian partition */
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#define MBR_NETBSD MBR_NETBSD_BE /* on this machine, we default to BE */
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/* For compatibility reasons (mainly for fdisk): */
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#define dos_partition mbr_partition
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#define dp_flag mbr_flag
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#define dp_shd mbr_shd
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#define dp_ssect mbr_ssect
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#define dp_scyl mbr_scyl
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#define dp_typ mbr_type
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#define dp_ehd mbr_ehd
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#define dp_esect mbr_esect
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#define dp_ecyl mbr_ecyl
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#define dp_start mbr_start
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#define dp_size mbr_size
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#define DOSPARTOFF MBRPARTOFF
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#define NDOSPART NMBRPART
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#define DOSPTYP_386BSD MBR_NETBSD
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struct cpu_disklabel {
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int cd_start; /* Offset to NetBSD partition in blocks */
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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 *bp, struct disklabel *lp, int wlabel));
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#endif /* _KERNEL */
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#endif /* _MACHINE_DISKLABEL_H_ */
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