| 1 | /*␊ |
| 2 | * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 7 | * as defined in and that are subject to the Apple Public Source License␊ |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 9 | * compliance with the License. Please obtain a copy of the License at␊ |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this␊ |
| 11 | * file.␊ |
| 12 | * ␊ |
| 13 | * The Original Code and all software distributed under the License are␊ |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 18 | * Please see the License for the specific language governing rights and␊ |
| 19 | * limitations under the License.␊ |
| 20 | * ␊ |
| 21 | * @APPLE_LICENSE_HEADER_END@␊ |
| 22 | */␊ |
| 23 | /*␊ |
| 24 | * 2008-05-24:␊ |
| 25 | * Tamas Kosarszky: changed MBR_CODE_SIZE to 0x1B8 to make fdisk␊ |
| 26 | * compatible with Vista and GPT specifications.␊ |
| 27 | *␊ |
| 28 | * Credits goes to Dense for the idea of this modification and␊ |
| 29 | * Kabyl for findig this piece of source. ␊ |
| 30 | */␊ |
| 31 | /*␊ |
| 32 | * Copyright (c) 1997 Tobias Weingartner␊ |
| 33 | * All rights reserved.␊ |
| 34 | *␊ |
| 35 | * Redistribution and use in source and binary forms, with or without␊ |
| 36 | * modification, are permitted provided that the following conditions␊ |
| 37 | * are met:␊ |
| 38 | * 1. Redistributions of source code must retain the above copyright␊ |
| 39 | * notice, this list of conditions and the following disclaimer.␊ |
| 40 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
| 41 | * notice, this list of conditions and the following disclaimer in the␊ |
| 42 | * documentation and/or other materials provided with the distribution.␊ |
| 43 | * 3. All advertising materials mentioning features or use of this software␊ |
| 44 | * must display the following acknowledgement:␊ |
| 45 | * This product includes software developed by Tobias Weingartner.␊ |
| 46 | * 4. The name of the author may not be used to endorse or promote products␊ |
| 47 | * derived from this software without specific prior written permission.␊ |
| 48 | *␊ |
| 49 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR␊ |
| 50 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES␊ |
| 51 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.␊ |
| 52 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,␊ |
| 53 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT␊ |
| 54 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,␊ |
| 55 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY␊ |
| 56 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT␊ |
| 57 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF␊ |
| 58 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.␊ |
| 59 | */␊ |
| 60 | ␊ |
| 61 | #ifndef _MBR_H␊ |
| 62 | #define _MBR_H␊ |
| 63 | ␊ |
| 64 | #include "part.h"␊ |
| 65 | ␊ |
| 66 | #ifndef NDOSPART␊ |
| 67 | #define NDOSPART 4␊ |
| 68 | #define DOSPTYP_UNUSED 0 ␊ |
| 69 | #define DOSPTYP_EXTEND 5␊ |
| 70 | #define DOSPTYP_EXTENDL 15␊ |
| 71 | #define DOSACTIVE 128␊ |
| 72 | #endif␊ |
| 73 | ␊ |
| 74 | /* Various constants */␊ |
| 75 | #define MBR_CODE_SIZE 0x1B8␊ |
| 76 | #define MBR_PART_SIZE␉0x10␊ |
| 77 | #define MBR_PART_OFF 0x1BE␊ |
| 78 | #define MBR_SIG_OFF 0x1FE␊ |
| 79 | /* MBR_BUF_SIZE is the largest sector size we support */␊ |
| 80 | #define MBR_BUF_SIZE 4096␊ |
| 81 | ␊ |
| 82 | #define MBR_SIGNATURE 0xAA55␊ |
| 83 | ␊ |
| 84 | /* MBR type */␊ |
| 85 | typedef struct _mbr_t {␊ |
| 86 | off_t reloffset; /* the offset of the first extended partition that contains all the rest */␊ |
| 87 | off_t offset; /* the absolute offset of this partition */␊ |
| 88 | struct _mbr_t *next; /* pointer to the next MBR in an extended partition chain */␊ |
| 89 | ␉unsigned char code[MBR_CODE_SIZE];␊ |
| 90 | ␉unsigned short signature;␊ |
| 91 | ␉prt_t part[NDOSPART];␊ |
| 92 | unsigned char buf[MBR_BUF_SIZE];␊ |
| 93 | } mbr_t;␊ |
| 94 | ␊ |
| 95 | /* Prototypes */␊ |
| 96 | void MBR_print_disk __P((char *));␊ |
| 97 | void MBR_print __P((mbr_t *));␊ |
| 98 | void MBR_print_all __P((mbr_t *));␊ |
| 99 | void MBR_parse __P((disk_t *, off_t, off_t, mbr_t *));␊ |
| 100 | void MBR_make __P((mbr_t *));␊ |
| 101 | void MBR_init __P((disk_t *, mbr_t *));␊ |
| 102 | int MBR_read __P((disk_t *,int, off_t, mbr_t *));␊ |
| 103 | int MBR_write __P((disk_t *,int, mbr_t *));␊ |
| 104 | void MBR_pcopy __P((disk_t *, mbr_t *));␊ |
| 105 | mbr_t * MBR_parse_spec __P((FILE *, disk_t *));␊ |
| 106 | void MBR_dump __P((mbr_t *));␊ |
| 107 | void MBR_dump_all __P((mbr_t *));␊ |
| 108 | mbr_t *MBR_alloc __P((mbr_t *));␊ |
| 109 | void MBR_free __P((mbr_t *));␊ |
| 110 | mbr_t * MBR_read_all __P((disk_t *));␊ |
| 111 | int MBR_write_all __P((disk_t *, mbr_t *));␊ |
| 112 | void MBR_clear __P((mbr_t *));␊ |
| 113 | ␊ |
| 114 | /* Sanity check */␊ |
| 115 | #include <machine/param.h>␊ |
| 116 | #if (DEV_BSIZE != 512)␊ |
| 117 | #error "DEV_BSIZE != 512, somebody better fix me!"␊ |
| 118 | #endif␊ |
| 119 | ␊ |
| 120 | #endif /* _MBR_H */␊ |
| 121 | ␊ |
| 122 | |
