i386/include/disklabel.h

1.1  cgd /*	$NetBSD: disklabel.h,v 1.1 1994/10/14 18:26:48 cgd Exp $	*/
1.1  cgd
1.1  cgd /*
1.1  cgd  * Copyright (c) 1994 Christopher G. Demetriou
1.1  cgd  * All rights reserved.
1.1  cgd  *
1.1  cgd  * Redistribution and use in source and binary forms, with or without
1.1  cgd  * modification, are permitted provided that the following conditions
1.1  cgd  * are met:
1.1  cgd  * 1. Redistributions of source code must retain the above copyright
1.1  cgd  *    notice, this list of conditions and the following disclaimer.
1.1  cgd  * 2. Redistributions in binary form must reproduce the above copyright
1.1  cgd  *    notice, this list of conditions and the following disclaimer in the
1.1  cgd  *    documentation and/or other materials provided with the distribution.
1.1  cgd  * 3. All advertising materials mentioning features or use of this software
1.1  cgd  *    must display the following acknowledgement:
1.1  cgd  *      This product includes software developed by Christopher G. Demetriou.
1.1  cgd  * 4. The name of the author may not be used to endorse or promote products
1.1  cgd  *    derived from this software without specific prior written permission
1.1  cgd  *
1.1  cgd  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1.1  cgd  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
1.1  cgd  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
1.1  cgd  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
1.1  cgd  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
1.1  cgd  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
1.1  cgd  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.1  cgd  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.1  cgd  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
1.1  cgd  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.1  cgd  */
1.1  cgd
1.1  cgd #ifndef _MACHINE_DISKLABEL_H_
1.1  cgd #define _MACHINE_DISKLABEL_H_
1.1  cgd
1.1  cgd #define	LABELSECTOR	1		/* sector containing label */
1.1  cgd #define	LABELOFFSET	0		/* offset of label in sector */
1.1  cgd #define	MAXPARTITIONS	8		/* number of partitions */
1.1  cgd #define	RAW_PART	3		/* raw partition: XX?d (XXX) */
1.1  cgd
1.1  cgd /* DOS partition table -- located in boot block */
1.1  cgd #define	DOSBBSECTOR	0		/* DOS boot block relative sector # */
1.1  cgd #define	DOSPARTOFF	446
1.1  cgd #define	NDOSPART	4
1.1  cgd
1.1  cgd struct dos_partition {
1.1  cgd 	unsigned char	dp_flag;	/* bootstrap flags */
1.1  cgd 	unsigned char	dp_shd;		/* starting head */
1.1  cgd 	unsigned char	dp_ssect;	/* starting sector */
1.1  cgd 	unsigned char	dp_scyl;	/* starting cylinder */
1.1  cgd 	unsigned char	dp_typ;		/* partition type (see below) */
1.1  cgd 	unsigned char	dp_ehd;		/* end head */
1.1  cgd 	unsigned char	dp_esect;	/* end sector */
1.1  cgd 	unsigned char	dp_ecyl;	/* end cylinder */
1.1  cgd 	unsigned long	dp_start;	/* absolute starting sector number */
1.1  cgd 	unsigned long	dp_size;	/* partition size in sectors */
1.1  cgd } dos_partitions[NDOSPART];
1.1  cgd
1.1  cgd /* Known DOS partition types. */
1.1  cgd #define	DOSPTYP_386BSD	0xa5		/* 386BSD partition type */
1.1  cgd #define DOSPTYP_NETBSD	DOSPTYP_386BSD	/* NetBSD partition type (XXX) */
1.1  cgd
1.1  cgd #include <sys/dkbad.h>
1.1  cgd struct cpu_disklabel {
1.1  cgd 	struct dos_partition dosparts[NDOSPART];
1.1  cgd 	struct dkbad bad;
1.1  cgd };
1.1  cgd
1.1  cgd /* Isolate the relevant bits to get sector and cylinder. */
1.1  cgd #define	DPSECT(s)	((s) & 0x3f)
1.1  cgd #define	DPCYL(c, s)	((c) + (((s) & 0xc0) << 2))
1.1  cgd
1.1  cgd #ifdef KERNEL
1.1  cgd struct disklabel;
1.1  cgd int	bounds_check_with_label __P((struct buf *, struct disklabel *, int));
1.1  cgd #endif
1.1  cgd
1.1  cgd #endif /* _MACHINE_DISKLABEL_H_ */