1 | /*␊ |
2 | * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.␊ |
3 | *␊ |
4 | * ␊ |
5 | * This file contains Original Code and/or Modifications of Original Code␊ |
6 | * as defined in and that are subject to the Apple Public Source License␊ |
7 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
8 | * compliance with the License. Please obtain a copy of the License at␊ |
9 | * http://www.opensource.apple.com/apsl/ and read it before using this␊ |
10 | * file.␊ |
11 | * ␊ |
12 | * The Original Code and all software distributed under the License are␊ |
13 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
16 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
17 | * Please see the License for the specific language governing rights and␊ |
18 | * limitations under the License.␊ |
19 | * ␊ |
20 | *␊ |
21 | *␊ |
22 | * 2008-05-24:␊ |
23 | * Tamas Kosarszky: changed MBR_CODE_SIZE to 0x1B8 to make fdisk␊ |
24 | * compatible with Vista and GPT specifications.␊ |
25 | *␊ |
26 | * Credits goes to Dense for the idea of this modification and␊ |
27 | * Kabyl for findig this piece of source. ␊ |
28 | *␊ |
29 | *␊ |
30 | * Copyright (c) 1997 Tobias Weingartner␊ |
31 | * All rights reserved.␊ |
32 | *␊ |
33 | * Redistribution and use in source and binary forms, with or without␊ |
34 | * modification, are permitted provided that the following conditions␊ |
35 | * are met:␊ |
36 | * 1. Redistributions of source code must retain the above copyright␊ |
37 | * notice, this list of conditions and the following disclaimer.␊ |
38 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
39 | * notice, this list of conditions and the following disclaimer in the␊ |
40 | * documentation and/or other materials provided with the distribution.␊ |
41 | * 3. All advertising materials mentioning features or use of this software␊ |
42 | * must display the following acknowledgement:␊ |
43 | * This product includes software developed by Tobias Weingartner.␊ |
44 | * 4. The name of the author may not be used to endorse or promote products␊ |
45 | * derived from this software without specific prior written permission.␊ |
46 | *␊ |
47 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR␊ |
48 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES␊ |
49 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.␊ |
50 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,␊ |
51 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT␊ |
52 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,␊ |
53 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY␊ |
54 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT␊ |
55 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF␊ |
56 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.␊ |
57 | */␊ |
58 | ␊ |
59 | #ifndef _MBR_H␊ |
60 | #define _MBR_H␊ |
61 | ␊ |
62 | #include "part.h"␊ |
63 | ␊ |
64 | #ifndef NDOSPART␊ |
65 | #define NDOSPART 4␊ |
66 | #define DOSPTYP_UNUSED 0 ␊ |
67 | #define DOSPTYP_EXTEND 5␊ |
68 | #define DOSPTYP_EXTENDL 15␊ |
69 | #define DOSACTIVE 128␊ |
70 | #endif␊ |
71 | ␊ |
72 | /* Various constants */␊ |
73 | #define MBR_CODE_SIZE 0x1B8␊ |
74 | #define MBR_PART_SIZE␉0x10␊ |
75 | #define MBR_PART_OFF 0x1BE␊ |
76 | #define MBR_SIG_OFF 0x1FE␊ |
77 | /* MBR_BUF_SIZE is the largest sector size we support */␊ |
78 | #define MBR_BUF_SIZE 4096␊ |
79 | ␊ |
80 | #define MBR_SIGNATURE 0xAA55␊ |
81 | ␊ |
82 | /* MBR type */␊ |
83 | typedef struct _mbr_t {␊ |
84 | off_t reloffset; /* the offset of the first extended partition that contains all the rest */␊ |
85 | off_t offset; /* the absolute offset of this partition */␊ |
86 | struct _mbr_t *next; /* pointer to the next MBR in an extended partition chain */␊ |
87 | ␉unsigned char code[MBR_CODE_SIZE];␊ |
88 | ␉unsigned short signature;␊ |
89 | ␉prt_t part[NDOSPART];␊ |
90 | unsigned char buf[MBR_BUF_SIZE];␊ |
91 | } mbr_t;␊ |
92 | ␊ |
93 | /* Prototypes */␊ |
94 | void MBR_print_disk __P((char *));␊ |
95 | void MBR_print __P((mbr_t *));␊ |
96 | void MBR_print_all __P((mbr_t *));␊ |
97 | void MBR_parse __P((disk_t *, off_t, off_t, mbr_t *));␊ |
98 | void MBR_make __P((mbr_t *));␊ |
99 | void MBR_init __P((disk_t *, mbr_t *));␊ |
100 | int MBR_read __P((disk_t *,int, off_t, mbr_t *));␊ |
101 | int MBR_write __P((disk_t *,int, mbr_t *));␊ |
102 | void MBR_pcopy __P((disk_t *, mbr_t *));␊ |
103 | mbr_t * MBR_parse_spec __P((FILE *, disk_t *));␊ |
104 | void MBR_dump __P((mbr_t *));␊ |
105 | void MBR_dump_all __P((mbr_t *));␊ |
106 | mbr_t *MBR_alloc __P((mbr_t *));␊ |
107 | void MBR_free __P((mbr_t *));␊ |
108 | mbr_t * MBR_read_all __P((disk_t *));␊ |
109 | int MBR_write_all __P((disk_t *, mbr_t *));␊ |
110 | void MBR_clear __P((mbr_t *));␊ |
111 | ␊ |
112 | /* Sanity check */␊ |
113 | #include <machine/param.h>␊ |
114 | #if (DEV_BSIZE != 512)␊ |
115 | #error "DEV_BSIZE != 512, somebody better fix me!"␊ |
116 | #endif␊ |
117 | ␊ |
118 | #endif /* _MBR_H */␊ |
119 | ␊ |
120 | |