Home | History | Annotate | Line # | Download | only in include
disklabel.h revision 1.1 
      1 /*	$NetBSD: disklabel.h,v 1.1 1998/05/15 10:15:52 tsubai Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #ifndef	_MACHINE_DISKLABEL_H_
     35 #define	_MACHINE_DISKLABEL_H_
     36 
     37 #define	LABELSECTOR	0		/* sector containing label */
     38 #define	LABELOFFSET	64		/* offset of label in sector */
     39 #define	MAXPARTITIONS	16		/* number of partitions */
     40 #define	RAW_PART	2		/* raw partition: XX?c */
     41 
     42 /* MBR partition table */
     43 #define	MBRSECTOR	0		/* MBR sector number */
     44 #define	MBRPARTOFF	446		/* Offset of MBR partition table */
     45 #define	NMBRPART	4		/* # of partitions in MBR */
     46 #define	MBRMAGICOFF	510		/* Offset of magic number */
     47 #define	MBRMAGIC	0xaa55		/* Actual magic number */
     48 
     49 struct mbr_partition {
     50 	unsigned char	mbr_flag;	/* default boot flag */
     51 	unsigned char	mbr_shd;	/* start head, IsN't Always Meaningful */
     52 	unsigned char	mbr_ssect;	/* start sector, INAM */
     53 	unsigned char	mbr_scyl;	/* start cylinder, INAM */
     54 	unsigned char	mbr_type;	/* partition type */
     55 	unsigned char	mbr_ehd;	/* end head, INAM */
     56 	unsigned char	mbr_esect;	/* end sector, INAM */
     57 	unsigned char	mbr_ecyl;	/* end cylinder, INAM */
     58 	unsigned long	mbr_start;	/* absolute start sector number */
     59 	unsigned long	mbr_size;	/* partition size in sectors */
     60 };
     61 
     62 /* Known partition types: */
     63 #define	MBR_EXTENDED	0x05		/* Extended partition */
     64 #define	MBR_NETBSD	0xa9		/* NetBSD partition */
     65 #define	MBR_386BSD	0xa5		/* 386BSD partition */
     66 
     67 /* For compatibility reasons (mainly for fdisk): */
     68 #define	dos_partition	mbr_partition
     69 #define	dp_flag		mbr_flag
     70 #define	dp_shd		mbr_shd
     71 #define	dp_ssect	mbr_ssect
     72 #define	dp_scyl		mbr_scyl
     73 #define	dp_typ		mbr_type
     74 #define	dp_ehd		mbr_ehd
     75 #define	dp_esect	mbr_esect
     76 #define	dp_ecyl		mbr_ecyl
     77 #define	dp_start	mbr_start
     78 #define	dp_size		mbr_size
     79 
     80 #define	DOSPARTOFF	MBRPARTOFF
     81 #define	NDOSPART	NMBRPART
     82 
     83 #define	DOSPTYP_NETBSD	MBR_NETBSD
     84 
     85 struct cpu_disklabel {
     86 	int cd_start;		/* Offset to NetBSD partition in blocks */
     87 };
     88 
     89 /* Isolate the relevant bits to get sector and cylinder. */
     90 #define	DPSECT(s)	((s) & 0x3f)
     91 #define	DPCYL(c, s)	((c) + (((s) & 0xc0) << 2))
     92 
     93 #ifdef	_KERNEL
     94 struct disklabel;
     95 int bounds_check_with_label __P((struct buf *bp, struct disklabel *lp, int wlabel));
     96 #endif	/* _KERNEL */
     97 
     98 #endif	/* _MACHINE_DISKLABEL_H_ */
     99