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/*
File: AppleDiskPartitions.h
Contains: The Apple disk partition scheme as defined in Inside Macintosh: Volume V.
Version: QuickTime 7.3
Copyright: (c) 2007 (c) 2000-2001 by Apple Computer, Inc., all rights reserved
Bugs?: For bug reports, consult the following page on
the World Wide Web:
http://developer.apple.com/bugreporter/
*/
#ifndef __APPLEDISKPARTITIONS__
#define __APPLEDISKPARTITIONS__
#ifndef __MACTYPES__
#include <MacTypes.h>
#endif
#if PRAGMA_ONCE
#pragma once
#endif
#if PRAGMA_IMPORT
#pragma import on
#endif
#if PRAGMA_STRUCT_ALIGN
#pragma options align=mac68k
#elif PRAGMA_STRUCT_PACKPUSH
#pragma pack(push, 2)
#elif PRAGMA_STRUCT_PACK
#pragma pack(2)
#endif
/* Block 0 Definitions */
enum {
sbSIGWord = 0x4552, /* signature word for Block 0 ('ER') */
sbMac = 1 /* system type for Mac */
};
/* Partition Map Signatures */
enum {
pMapSIG = 0x504D, /* partition map signature ('PM') */
pdSigWord = 0x5453, /* partition map signature ('TS') */
oldPMSigWord = pdSigWord,
newPMSigWord = pMapSIG
};
/* Driver Descriptor Map */
struct Block0 {
UInt16 sbSig; /* unique value for SCSI block 0 */
UInt16 sbBlkSize; /* block size of device */
UInt32 sbBlkCount; /* number of blocks on device */
UInt16 sbDevType; /* device type */
UInt16 sbDevId; /* device id */
UInt32 sbData; /* not used */
UInt16 sbDrvrCount; /* driver descriptor count */
UInt32 ddBlock; /* 1st driver's starting block */
UInt16 ddSize; /* size of 1st driver (512-byte blks) */
UInt16 ddType; /* system type (1 for Mac+) */
UInt16 ddPad[243]; /* ARRAY[0..242] OF INTEGER; not used */
};
typedef struct Block0 Block0;
/* Driver descriptor */
struct DDMap {
UInt32 ddBlock; /* 1st driver's starting block */
UInt16 ddSize; /* size of 1st driver (512-byte blks) */
UInt16 ddType; /* system type (1 for Mac+) */
};
typedef struct DDMap DDMap;
/* Constants for the ddType field of the DDMap structure. */
enum {
kDriverTypeMacSCSI = 0x0001,
kDriverTypeMacATA = 0x0701,
kDriverTypeMacSCSIChained = 0xFFFF,
kDriverTypeMacATAChained = 0xF8FF
};
/* Partition Map Entry */
struct Partition {
UInt16 pmSig; /* unique value for map entry blk */
UInt16 pmSigPad; /* currently unused */
UInt32 pmMapBlkCnt; /* # of blks in partition map */
UInt32 pmPyPartStart; /* physical start blk of partition */
UInt32 pmPartBlkCnt; /* # of blks in this partition */
UInt8 pmPartName[32]; /* ASCII partition name */
UInt8 pmParType[32]; /* ASCII partition type */
UInt32 pmLgDataStart; /* log. # of partition's 1st data blk */
UInt32 pmDataCnt; /* # of blks in partition's data area */
UInt32 pmPartStatus; /* bit field for partition status */
UInt32 pmLgBootStart; /* log. blk of partition's boot code */
UInt32 pmBootSize; /* number of bytes in boot code */
UInt32 pmBootAddr; /* memory load address of boot code */
UInt32 pmBootAddr2; /* currently unused */
UInt32 pmBootEntry; /* entry point of boot code */
UInt32 pmBootEntry2; /* currently unused */
UInt32 pmBootCksum; /* checksum of boot code */
UInt8 pmProcessor[16]; /* ASCII for the processor type */
UInt16 pmPad[188]; /* ARRAY[0..187] OF INTEGER; not used */
};
typedef struct Partition Partition;
/* Flags for the pmPartStatus field of the Partition data structure. */
enum {
kPartitionAUXIsValid = 0x00000001,
kPartitionAUXIsAllocated = 0x00000002,
kPartitionAUXIsInUse = 0x00000004,
kPartitionAUXIsBootValid = 0x00000008,
kPartitionAUXIsReadable = 0x00000010,
kPartitionAUXIsWriteable = 0x00000020,
kPartitionAUXIsBootCodePositionIndependent = 0x00000040,
kPartitionIsWriteable = 0x00000020,
kPartitionIsMountedAtStartup = 0x40000000,
kPartitionIsStartup = (long)0x80000000,
kPartitionIsChainCompatible = 0x00000100,
kPartitionIsRealDeviceDriver = 0x00000200,
kPartitionCanChainToNext = 0x00000400
};
/* Well known driver signatures, stored in the first four byte of pmPad. */
enum {
kPatchDriverSignature = FOUR_CHAR_CODE('ptDR'), /* SCSI and ATA[PI] patch driver */
kSCSIDriverSignature = 0x00010600, /* SCSI hard disk driver */
kATADriverSignature = FOUR_CHAR_CODE('wiki'), /* ATA hard disk driver */
kSCSICDDriverSignature = FOUR_CHAR_CODE('CDvr'), /* SCSI CD-ROM driver */
kATAPIDriverSignature = FOUR_CHAR_CODE('ATPI'), /* ATAPI CD-ROM driver */
kDriveSetupHFSSignature = FOUR_CHAR_CODE('DSU1') /* Drive Setup HFS partition */
};
#if PRAGMA_STRUCT_ALIGN
#pragma options align=reset
#elif PRAGMA_STRUCT_PACKPUSH
#pragma pack(pop)
#elif PRAGMA_STRUCT_PACK
#pragma pack()
#endif
#ifdef PRAGMA_IMPORT_OFF
#pragma import off
#elif PRAGMA_IMPORT
#pragma import reset
#endif
#endif /* __APPLEDISKPARTITIONS__ */
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