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Diffstat (limited to 'diskdev_cmds/fdisk.tproj/mbr.h')
| -rw-r--r-- | diskdev_cmds/fdisk.tproj/mbr.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/diskdev_cmds/fdisk.tproj/mbr.h b/diskdev_cmds/fdisk.tproj/mbr.h new file mode 100644 index 0000000..52247ee --- /dev/null +++ b/diskdev_cmds/fdisk.tproj/mbr.h @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2002 Apple Computer, Inc. All rights reserved. + * + * @APPLE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this + * file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_LICENSE_HEADER_END@ + */ + +/* + * Copyright (c) 1997 Tobias Weingartner + * 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 Tobias Weingartner. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + */ + +#ifndef _MBR_H +#define _MBR_H + +#include "part.h" + +#ifndef NDOSPART +#define NDOSPART 4 +#define DOSPTYP_UNUSED 0 +#define DOSPTYP_EXTEND 5 +#define DOSPTYP_EXTENDL 15 +#define DOSACTIVE 128 +#endif + +/* Various constants */ +#define MBR_CODE_SIZE 0x1BE +#define MBR_PART_SIZE 0x10 +#define MBR_PART_OFF 0x1BE +#define MBR_SIG_OFF 0x1FE +/* MBR_BUF_SIZE is the largest sector size we support */ +#define MBR_BUF_SIZE 4096 + +#define MBR_SIGNATURE 0xAA55 + +/* MBR type */ +typedef struct _mbr_t { + off_t reloffset; /* the offset of the first extended partition that contains all the rest */ + off_t offset; /* the absolute offset of this partition */ + struct _mbr_t *next; /* pointer to the next MBR in an extended partition chain */ + unsigned char code[MBR_CODE_SIZE]; + unsigned short signature; + prt_t part[NDOSPART]; + unsigned char buf[MBR_BUF_SIZE]; +} mbr_t; + +/* Prototypes */ +void MBR_print_disk __P((char *)); +void MBR_print __P((mbr_t *)); +void MBR_print_all __P((mbr_t *)); +void MBR_parse __P((disk_t *, off_t, off_t, mbr_t *)); +void MBR_make __P((mbr_t *)); +void MBR_init __P((disk_t *, mbr_t *)); +int MBR_read __P((disk_t *,int, off_t, mbr_t *)); +int MBR_write __P((disk_t *,int, mbr_t *)); +void MBR_pcopy __P((disk_t *, mbr_t *)); +mbr_t * MBR_parse_spec __P((FILE *, disk_t *)); +void MBR_dump __P((mbr_t *)); +void MBR_dump_all __P((mbr_t *)); +mbr_t *MBR_alloc __P((mbr_t *)); +void MBR_free __P((mbr_t *)); +mbr_t * MBR_read_all __P((disk_t *)); +int MBR_write_all __P((disk_t *, mbr_t *)); +void MBR_clear __P((mbr_t *)); + +/* Sanity check */ +#include <machine/param.h> +#if (DEV_BSIZE != 512) +#error "DEV_BSIZE != 512, somebody better fix me!" +#endif + +#endif /* _MBR_H */ + |