part_brfr.c File Reference

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Macros
#define	XBOX_SIGNATURE_SECTOR   3
#define	XBOX_SIGNATURE   ('B' | ('R' << 8) | ('F' << 16) | ('R' << 24))
#define	FATX_DATA_PARTITION   1

Functions
static BOOLEAN	DiskIsBrfr (_In_ UCHAR DriveNumber)
BOOLEAN	DiskGetBrfrPartitionEntry (_In_ UCHAR DriveNumber, _In_ ULONG SectorSize, _In_ ULONG PartitionNumber, _Out_ PPARTITION_INFORMATION PartitionEntry)

Variables
struct {
ULONG   SectorStart
ULONG   SectorCount
UCHAR   PartitionType
}	XboxPartitions []

Macro Definition Documentation

FATX_DATA_PARTITION

#define FATX_DATA_PARTITION   1

Definition at line 17 of file part_brfr.c.

XBOX_SIGNATURE

#define XBOX_SIGNATURE   ('B' | ('R' << 8) | ('F' << 16) | ('R' << 24))

Definition at line 14 of file part_brfr.c.

XBOX_SIGNATURE_SECTOR

#define XBOX_SIGNATURE_SECTOR   3

Definition at line 13 of file part_brfr.c.

Function Documentation

DiskGetBrfrPartitionEntry()

BOOLEAN DiskGetBrfrPartitionEntry	(	_In_ UCHAR	DriveNumber,
		_In_ ULONG	SectorSize,
		_In_ ULONG	PartitionNumber,
		_Out_ PPARTITION_INFORMATION	PartitionEntry
	)

Definition at line 47 of file part_brfr.c.

{
    ASSERT(SectorSize >= 512);
 
    if (!DiskIsBrfr(DriveNumber))
        return FALSE; /* No magic Xbox partitions */
 
    /* Get partition entry of an Xbox-standard BRFR partitioned disk */
    if (!(1 <= PartitionNumber && PartitionNumber <= RTL_NUMBER_OF(XboxPartitions)))
        return FALSE; /* Partition does not exist */
 
    /* Convert to standard-style entry */
    PartitionEntry->StartingOffset.QuadPart  = (ULONGLONG)XboxPartitions[PartitionNumber - 1].SectorStart * SectorSize;
    PartitionEntry->PartitionLength.QuadPart = (ULONGLONG)XboxPartitions[PartitionNumber - 1].SectorCount * SectorSize;
    PartitionEntry->HiddenSectors = 0;
    PartitionEntry->PartitionNumber = PartitionNumber;
    PartitionEntry->PartitionType = XboxPartitions[PartitionNumber - 1].PartitionType;
    PartitionEntry->BootIndicator = (PartitionNumber == FATX_DATA_PARTITION);
    PartitionEntry->RecognizedPartition = TRUE;
    PartitionEntry->RewritePartition = FALSE;
 
    return TRUE;
}

Referenced by DiskGetBootPartitionEntry(), and DiskGetPartitionEntry().

DiskIsBrfr()

static BOOLEAN DiskIsBrfr ( _In_ UCHAR  DriveNumber )

static

Definition at line 35 of file part_brfr.c.

{
    /* Read the Xbox-specific sector */
    if (!MachDiskReadLogicalSectors(DriveNumber, XBOX_SIGNATURE_SECTOR, 1, DiskReadBuffer))
        return FALSE; /* Partition does not exist */
 
    /* Verify the magic Xbox signature */
    return (*((PULONG)DiskReadBuffer) == XBOX_SIGNATURE);
}

Referenced by DiskDetectPartitionType(), and DiskGetBrfrPartitionEntry().

Variable Documentation

PartitionType

UCHAR PartitionType

Definition at line 23 of file part_brfr.c.

Referenced by CreateLogicalPartition(), CreatePrimaryMbrPartition(), FormatPartition(), FstubDetectPartitionStyle(), HalpQueryPartitionType(), HalpSetPartitionInformation(), InferFileSystemWorker(), IoReadDiskSignature(), IoSetPartitionInformation(), LookupPartitionTypeString(), RamdiskGetPartitionInfo(), setid_main(), SetMBRPartitionType(), xHalIoAssignDriveLetters(), xHalIoReadPartitionTable(), xHalIoSetPartitionInformation(), and xHalIoWritePartitionTable().

SectorCount

_Must_inspect_result_ _In_ LONGLONG _In_ LONGLONG _In_ LONGLONG SectorCount

Definition at line 22 of file part_brfr.c.

Referenced by AddLogicalDiskSpace(), AtaCommandUseLba48(), AtapBuildReadPacketCommand(), AtapBuildReadTaskFile(), AtaReadLogicalSectors(), CacheReadDiskSectors(), CommandDumpSector(), CreateInsertBlankRegion(), DeviceRequestReadWrite(), DiskGetBrfrPartitionEntry(), DiskOpen(), DiskPerformSmartCommand(), DiskReadSmartLog(), DiskWriteSmartLog(), ExtReadVolumeSectors(), Fat12Format(), Fat16Format(), FatAddMcbEntry(), FatMount(), FatReadPartialCluster(), FatReadVolumeSectors(), FatRemoveMcbEntry(), FatxFormat(), FileSystemToMBRPartitionType(), FsRecGetDeviceSectors(), FsRecNtfsFsControl(), FsRtlAddBaseMcbEntry(), FsRtlAddLargeMcbEntry(), FsRtlAddMcbEntry(), FsRtlGetNextBaseMcbEntry(), FsRtlGetNextLargeMcbEntry(), FsRtlGetNextMcbEntry(), FsRtlLargeMcbTest(), FsRtlLargeMcbTestsExt2(), FsRtlLargeMcbTestsFastFat_3(), FsRtlLookupMcbEntry(), FsRtlRemoveBaseMcbEntry(), FsRtlRemoveLargeMcbEntry(), FsRtlRemoveMcbEntry(), GetFreeDiskSize(), HalpCalculateChsValues(), InitializePartitionEntry(), InsertGptPartition(), IsoBufferDirectory(), main(), NtfsReadSectors(), Pc98DiskReadLogicalSectors(), Pc98DiskReadLogicalSectorsCHS(), Pc98DiskReadLogicalSectorsLBA(), PcDiskReadLogicalSectors(), PcDiskReadLogicalSectorsCHS(), PcDiskReadLogicalSectorsLBA(), QueryDeviceInformation(), ScanForUnpartitionedDiskSpace(), UefiDiskOpen(), UefiDiskReadLogicalSectors(), and XboxDiskReadLogicalSectors().

SectorStart

ULONG SectorStart

Definition at line 21 of file part_brfr.c.

Referenced by DiskGetBrfrPartitionEntry(), and DiskInitialize().

struct { ... } XboxPartitions[]

Initial value:

=
{
    
    { 0x0055F400, 0x0098F800, PARTITION_FAT32  }, 
    { 0x00465400, 0x000FA000, PARTITION_FAT_16 }, 
    { 0x00000400, 0x00177000, PARTITION_FAT_16 }, 
    { 0x00177400, 0x00177000, PARTITION_FAT_16 }, 
    { 0x002EE400, 0x00177000, PARTITION_FAT_16 }  
}

Referenced by DiskGetBrfrPartitionEntry().