freebsd-nq/sys/sys/diskmbr.h
Poul-Henning Kamp 619394c052 Add NEXTDOSPART (N-Extended-Dos-Partitions) as replacement for the
misplaced MAX_SLICES from <sys/diskslice.h>.
2003-01-20 11:06:24 +00:00

76 lines
3.1 KiB
C

/*
* Copyright (c) 1987, 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)disklabel.h 8.2 (Berkeley) 7/10/94
* $FreeBSD$
*/
#ifndef _SYS_DISKMBR_H_
#define _SYS_DISKMBR_H_
#include <sys/ioccom.h>
#define DOSBBSECTOR 0 /* DOS boot block relative sector number */
#define DOSPARTOFF 446
#define NDOSPART 4
#define NEXTDOSPART 32
#define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */
#define DOSPTYP_LINSWP 0x82 /* Linux swap partition */
#define DOSPTYP_LINUX 0x83 /* Linux partition */
#define DOSPTYP_EXT 5 /* DOS extended partition */
#define DOSPTYP_EXTLBA 15 /* DOS extended partition */
struct dos_partition {
unsigned char dp_flag; /* bootstrap flags */
unsigned char dp_shd; /* starting head */
unsigned char dp_ssect; /* starting sector */
unsigned char dp_scyl; /* starting cylinder */
unsigned char dp_typ; /* partition type */
unsigned char dp_ehd; /* end head */
unsigned char dp_esect; /* end sector */
unsigned char dp_ecyl; /* end cylinder */
u_int32_t dp_start; /* absolute starting sector number */
u_int32_t dp_size; /* partition size in sectors */
};
#ifdef CTASSERT
CTASSERT(sizeof (struct dos_partition) == 16);
#endif
#define DPSECT(s) ((s) & 0x3f) /* isolate relevant bits of sector */
#define DPCYL(c, s) ((c) + (((s) & 0xc0)<<2)) /* and those that are cylinder */
#define DIOCGMBR _IOR('M', 128, u_char[512])
#define DIOCSMBR _IOW('M', 129, u_char[512])
#endif /* !_SYS_DISKMBR_H_ */