| 1 | /*␊ |
| 2 | * Copyright (c) 1998-2009 Apple 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 | /*␊ |
| 25 | * This header contains the IOApplePartitionScheme class definition.␊ |
| 26 | */␊ |
| 27 | ␊ |
| 28 | #ifndef _IOAPPLEPARTITIONSCHEME_H␊ |
| 29 | #define _IOAPPLEPARTITIONSCHEME_H␊ |
| 30 | ␊ |
| 31 | #include <IOKit/IOTypes.h>␊ |
| 32 | ␊ |
| 33 | /*␊ |
| 34 | * kIOApplePartitionSchemeClass is the name of the IOApplePartitionScheme class.␊ |
| 35 | */␊ |
| 36 | ␊ |
| 37 | #define kIOApplePartitionSchemeClass "IOApplePartitionScheme"␊ |
| 38 | ␊ |
| 39 | /*␊ |
| 40 | * Apple Partition Map Definitions␊ |
| 41 | */␊ |
| 42 | ␊ |
| 43 | #pragma pack(push, 1) /* (enable 8-bit struct packing) */␊ |
| 44 | ␊ |
| 45 | /* Structure constants. */␊ |
| 46 | ␊ |
| 47 | #define DPISTRLEN 32␊ |
| 48 | ␊ |
| 49 | /* Partition map entry, as found in blocks 1 to dpme_map_entries of the disk. */␊ |
| 50 | ␊ |
| 51 | typedef struct dpme␊ |
| 52 | {␊ |
| 53 | UInt16 dpme_signature; /* (unique value for partition entry, 'PM') */␊ |
| 54 | UInt16 dpme_reserved_1; /* (reserved for future use) */␊ |
| 55 | UInt32 dpme_map_entries; /* (number of partition entries) */␊ |
| 56 | UInt32 dpme_pblock_start; /* (physical block start of partition) */␊ |
| 57 | UInt32 dpme_pblocks; /* (physical block count of partition) */␊ |
| 58 | char dpme_name[DPISTRLEN]; /* (name of partition) */␊ |
| 59 | char dpme_type[DPISTRLEN]; /* (type of partition, eg. Apple_HFS) */␊ |
| 60 | UInt32 dpme_lblock_start; /* (logical block start of partition) */␊ |
| 61 | UInt32 dpme_lblocks; /* (logical block count of partition) */␊ |
| 62 | UInt32 dpme_flags; /* (partition flags, see defines below) */␊ |
| 63 | UInt32 dpme_boot_block; /* (logical block start of boot code) */␊ |
| 64 | UInt32 dpme_boot_bytes; /* (byte count of boot code) */␊ |
| 65 | UInt32 dpme_load_addr; /* (load address in memory of boot code) */␊ |
| 66 | UInt32 dpme_load_addr_2; /* (reserved for future use) */␊ |
| 67 | UInt32 dpme_goto_addr; /* (jump address in memory of boot code) */␊ |
| 68 | UInt32 dpme_goto_addr_2; /* (reserved for future use) */␊ |
| 69 | UInt32 dpme_checksum; /* (checksum of boot code) */␊ |
| 70 | UInt8 dpme_process_id[16]; /* (processor type) */␊ |
| 71 | UInt32 dpme_reserved_2[32]; /* (reserved for future use) */␊ |
| 72 | UInt32 dpme_reserved_3[62]; /* (reserved for future use) */␊ |
| 73 | } DPME;␊ |
| 74 | ␊ |
| 75 | /* Driver descriptor map entry. */␊ |
| 76 | ␊ |
| 77 | typedef struct DDMap␊ |
| 78 | {␊ |
| 79 | UInt32 ddBlock; /* (driver's block start, sbBlkSize-blocks) */␊ |
| 80 | UInt16 ddSize; /* (driver's block count, 512-blocks) */␊ |
| 81 | UInt16 ddType; /* (driver's system type) */␊ |
| 82 | } DDMap;␊ |
| 83 | ␊ |
| 84 | /* Driver descriptor map, as found in block zero of the disk. */␊ |
| 85 | ␊ |
| 86 | typedef struct Block0␊ |
| 87 | {␊ |
| 88 | UInt16 sbSig; /* (unique value for block zero, 'ER') */␊ |
| 89 | UInt16 sbBlkSize; /* (block size for this device) */␊ |
| 90 | UInt32 sbBlkCount; /* (block count for this device) */␊ |
| 91 | UInt16 sbDevType; /* (device type) */␊ |
| 92 | UInt16 sbDevId; /* (device id) */␊ |
| 93 | UInt32 sbDrvrData; /* (driver data) */␊ |
| 94 | UInt16 sbDrvrCount; /* (driver descriptor count) */␊ |
| 95 | DDMap sbDrvrMap[8]; /* (driver descriptor table) */␊ |
| 96 | UInt8 sbReserved[430]; /* (reserved for future use) */␊ |
| 97 | } Block0;␊ |
| 98 | ␊ |
| 99 | /* Partition map signature (sbSig). */␊ |
| 100 | ␊ |
| 101 | #define BLOCK0_SIGNATURE 0x4552␊ |
| 102 | ␊ |
| 103 | /* Partition map entry signature (dpme_signature). */␊ |
| 104 | ␊ |
| 105 | #define DPME_SIGNATURE 0x504D␊ |
| 106 | ␊ |
| 107 | /* Partition map entry flags (dpme_flags). */␊ |
| 108 | ␊ |
| 109 | #define DPME_FLAGS_VALID 0x00000001 /* (bit 0) */␊ |
| 110 | #define DPME_FLAGS_ALLOCATED 0x00000002 /* (bit 1) */␊ |
| 111 | #define DPME_FLAGS_IN_USE 0x00000004 /* (bit 2) */␊ |
| 112 | #define DPME_FLAGS_BOOTABLE 0x00000008 /* (bit 3) */␊ |
| 113 | #define DPME_FLAGS_READABLE 0x00000010 /* (bit 4) */␊ |
| 114 | #define DPME_FLAGS_WRITABLE 0x00000020 /* (bit 5) */␊ |
| 115 | #define DPME_FLAGS_OS_PIC_CODE 0x00000040 /* (bit 6) */␊ |
| 116 | #define DPME_FLAGS_OS_SPECIFIC_2 0x00000080 /* (bit 7) */␊ |
| 117 | #define DPME_FLAGS_OS_SPECIFIC_1 0x00000100 /* (bit 8) */␊ |
| 118 | #define DPME_FLAGS_RESERVED_2 0xFFFFFE00 /* (bit 9..31) */␊ |
| 119 | ␊ |
| 120 | #pragma pack(pop) /* (reset to default struct packing) */␊ |
| 121 | ␊ |
| 122 | #endif /* !_IOAPPLEPARTITIONSCHEME_H */␊ |
| 123 | |
