82 lines
3.3 KiB
C
82 lines
3.3 KiB
C
/*
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* Copyright (c) 1987, 1988, 1993
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* The Regents of the University of California. 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 the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)disklabel.h 8.2 (Berkeley) 7/10/94
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* $FreeBSD$
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*/
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#ifndef _SYS_DISKMBR_H_
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#define _SYS_DISKMBR_H_
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#include <sys/ioccom.h>
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#define DOSBBSECTOR 0 /* DOS boot block relative sector number */
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#define DOSPARTOFF 446
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#define DOSPARTSIZE 16
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#define NDOSPART 4
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#define NEXTDOSPART 32
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#define DOSMAGICOFFSET 510
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#define DOSMAGIC 0xAA55
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#define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */
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#define DOSPTYP_LINSWP 0x82 /* Linux swap partition */
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#define DOSPTYP_LINUX 0x83 /* Linux partition */
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#define DOSPTYP_PMBR 0xee /* GPT Protective MBR */
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#define DOSPTYP_EXT 5 /* DOS extended partition */
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#define DOSPTYP_EXTLBA 15 /* DOS extended partition */
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struct dos_partition {
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unsigned char dp_flag; /* bootstrap flags */
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unsigned char dp_shd; /* starting head */
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unsigned char dp_ssect; /* starting sector */
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unsigned char dp_scyl; /* starting cylinder */
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unsigned char dp_typ; /* partition type */
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unsigned char dp_ehd; /* end head */
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unsigned char dp_esect; /* end sector */
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unsigned char 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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};
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#ifdef CTASSERT
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CTASSERT(sizeof (struct dos_partition) == DOSPARTSIZE);
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#endif
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void dos_partition_dec(void const *pp, struct dos_partition *d);
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void dos_partition_enc(void *pp, struct dos_partition *d);
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#define DPSECT(s) ((s) & 0x3f) /* isolate relevant bits of sector */
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#define DPCYL(c, s) ((c) + (((s) & 0xc0)<<2)) /* and those that are cylinder */
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#define DIOCSMBR _IOW('M', 129, u_char[512])
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#endif /* !_SYS_DISKMBR_H_ */
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