disk.h File Reference

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Classes
struct	_GEOMETRY

Macros
#define	PARTITION_ENTRY_UNUSED   0x00
#define	PARTITION_FAT_12   0x01
#define	PARTITION_FAT_16   0x04
#define	PARTITION_EXTENDED   0x05
#define	PARTITION_HUGE   0x06
#define	PARTITION_IFS   0x07
#define	PARTITION_FAT32   0x0B
#define	PARTITION_FAT32_XINT13   0x0C
#define	PARTITION_XINT13   0x0E
#define	PARTITION_XINT13_EXTENDED   0x0F
#define	PARTITION_PREP   0x41
#define	PARTITION_LDM   0x42
#define	PARTITION_GPT   0xEE

Typedefs
typedef struct _GEOMETRY	GEOMETRY
typedef struct _GEOMETRY *	PGEOMETRY

Functions
LONG	DiskReportError (_In_ BOOLEAN bShowError)
VOID	DiskError (_In_ PCSTR ErrorString, _In_ ULONG ErrorCode)
PCSTR	DiskGetErrorCodeString (_In_ ULONG ErrorCode)
ARC_STATUS	DiskInitialize (_In_ UCHAR DriveNumber, _In_ PCSTR DeviceName, _In_ CONFIGURATION_TYPE DeviceType, _In_ const struct tagDEVVTBL *FuncTable, _Out_opt_ PULONG pChecksum, _Out_opt_ PULONG pSignature, _Out_opt_ PBOOLEAN pValidPartitionTable)
VOID	DiskDetectPartitionType (_In_ UCHAR DriveNumber)
BOOLEAN	DiskGetBootPartitionEntry (_In_ UCHAR DriveNumber, _Out_opt_ PPARTITION_INFORMATION PartitionEntry, _Out_ PULONG BootPartition)
BOOLEAN	DiskGetPartitionEntry (_In_ UCHAR DriveNumber, _In_opt_ ULONG SectorSize, _In_ ULONG PartitionNumber, _Out_ PPARTITION_INFORMATION PartitionEntry)
ULONG	LoadBootDeviceDriver (VOID)
PCCHAR	FrLdrGetBootPath (VOID)
UCHAR	FrldrGetBootDrive (VOID)
ULONG	FrldrGetBootPartition (VOID)

Variables
PVOID	DiskReadBuffer
SIZE_T	DiskReadBufferSize
CCHAR	FrLdrBootPath [MAX_PATH]

Macro Definition Documentation

PARTITION_ENTRY_UNUSED

#define PARTITION_ENTRY_UNUSED   0x00

Definition at line 35 of file disk.h.

PARTITION_EXTENDED

#define PARTITION_EXTENDED   0x05

Definition at line 38 of file disk.h.

PARTITION_FAT32

#define PARTITION_FAT32   0x0B

Definition at line 41 of file disk.h.

PARTITION_FAT32_XINT13

#define PARTITION_FAT32_XINT13   0x0C

Definition at line 42 of file disk.h.

PARTITION_FAT_12

#define PARTITION_FAT_12   0x01

Definition at line 36 of file disk.h.

PARTITION_FAT_16

#define PARTITION_FAT_16   0x04

Definition at line 37 of file disk.h.

PARTITION_GPT

#define PARTITION_GPT   0xEE

Definition at line 47 of file disk.h.

PARTITION_HUGE

#define PARTITION_HUGE   0x06

Definition at line 39 of file disk.h.

PARTITION_IFS

#define PARTITION_IFS   0x07

Definition at line 40 of file disk.h.

PARTITION_LDM

#define PARTITION_LDM   0x42

Definition at line 46 of file disk.h.

PARTITION_PREP

#define PARTITION_PREP   0x41

Definition at line 45 of file disk.h.

PARTITION_XINT13

#define PARTITION_XINT13   0x0E

Definition at line 43 of file disk.h.

PARTITION_XINT13_EXTENDED

#define PARTITION_XINT13_EXTENDED   0x0F

Definition at line 44 of file disk.h.

Typedef Documentation

GEOMETRY

typedef struct _GEOMETRY GEOMETRY

PGEOMETRY

typedef struct _GEOMETRY * PGEOMETRY

Function Documentation

DiskDetectPartitionType()

VOID DiskDetectPartitionType

(

_In_ UCHAR

DriveNumber

)

Definition at line 66 of file partition.c.

{
    MASTER_BOOT_RECORD MasterBootRecord;
 
    /* Probe for Master Boot Record */
    if (DiskReadBootRecord(DriveNumber, 0, &MasterBootRecord))
    {
#if 0
        ULONG Index, PartitionCount = 0;
        BOOLEAN GPTProtect = FALSE;
#else
        GPT_TABLE_HEADER GptHeader;
#endif
 
        DiskPartitionType[DriveNumber] = PARTITION_STYLE_MBR;
 
#if 0
        /* Check for GUID Partition Table */
        for (Index = 0; Index < 4; Index++)
        {
            PPARTITION_TABLE_ENTRY PartitionTableEntry = &MasterBootRecord.PartitionTable[Index];
 
            if (PartitionTableEntry->SystemIndicator != PARTITION_ENTRY_UNUSED)
            {
                PartitionCount++;
                if (Index == 0 && PartitionTableEntry->SystemIndicator == PARTITION_GPT)
                    GPTProtect = TRUE;
            }
        }
 
        if (PartitionCount == 1 && GPTProtect)
#else
        if (DiskReadGptHeader(DriveNumber, &GptHeader))
#endif
        {
            DiskPartitionType[DriveNumber] = PARTITION_STYLE_GPT;
        }
        TRACE("Drive 0x%X partition type %s\n", DriveNumber, DiskPartitionType[DriveNumber] == PARTITION_STYLE_MBR ? "MBR" : "GPT");
        return;
    }
 
    /* Probe for Xbox-BRFR partitioning */
    if (DiskIsBrfr(DriveNumber))
    {
        DiskPartitionType[DriveNumber] = PARTITION_STYLE_BRFR;
        TRACE("Drive 0x%X partition type Xbox-BRFR\n", DriveNumber);
        return;
    }
 
    /* Failed to detect partitions, assume non-partitioned disk */
    DiskPartitionType[DriveNumber] = PARTITION_STYLE_RAW;
    TRACE("Drive 0x%X partition type unknown\n", DriveNumber);
}

Referenced by DiskInitialize().

DiskError()

VOID DiskError	(	_In_ PCSTR	ErrorString,
		_In_ ULONG	ErrorCode
	)

Definition at line 48 of file disk.c.

{
    PCSTR ErrorDescription;
    CHAR ErrorCodeString[200];
 
    if (lReportError < 0)
        return;
 
    ErrorDescription = DiskGetErrorCodeString(ErrorCode);
    if (ErrorDescription)
    {
        RtlStringCbPrintfA(ErrorCodeString, sizeof(ErrorCodeString),
                           "%s\n\nError Code: 0x%lx\nError: %s",
                           ErrorString, ErrorCode, ErrorDescription);
    }
    else
    {
        RtlStringCbCopyA(ErrorCodeString, sizeof(ErrorCodeString), ErrorString);
    }
 
    ERR("%s\n", ErrorCodeString);
    UiMessageBox(ErrorCodeString);
}

Referenced by Pc98DiskReadLogicalSectorsCHS(), Pc98DiskReadLogicalSectorsLBA(), PcDiskReadLogicalSectorsCHS(), PcDiskReadLogicalSectorsLBA(), and XboxDiskReadLogicalSectors().

DiskGetBootPartitionEntry()

BOOLEAN DiskGetBootPartitionEntry	(	_In_ UCHAR	DriveNumber,
		_Out_opt_ PPARTITION_INFORMATION	PartitionEntry,
		_Out_ PULONG	BootPartition
	)

Definition at line 123 of file partition.c.

{
#if 0
    GEOMETRY Geometry;
    if (!MachDiskGetDriveGeometry(DriveNumber, &Geometry))
        return FALSE;
#endif
 
    switch (DiskPartitionType[DriveNumber])
    {
        case PARTITION_STYLE_MBR:
        {
            return DiskGetActivePartitionEntry(DriveNumber,
            /* MBR partition table always uses 512-byte sectors per specification */
                                               512, // Geometry.BytesPerSector
                                               PartitionEntry, BootPartition);
        }
        case PARTITION_STYLE_GPT:
        {
            FIXME("DiskGetBootPartitionEntry() unimplemented for GPT\n");
            return FALSE;
        }
        case PARTITION_STYLE_RAW:
        {
            FIXME("DiskGetBootPartitionEntry() unimplemented for RAW\n");
            return FALSE;
        }
        case PARTITION_STYLE_BRFR:
        {
            PARTITION_INFORMATION TempPartitionEntry;
            if (!PartitionEntry)
                PartitionEntry = &TempPartitionEntry;
            if (DiskGetBrfrPartitionEntry(DriveNumber,
                                          512, // Geometry.BytesPerSector
                                          FATX_DATA_PARTITION,
                                          PartitionEntry))
            {
                *BootPartition = FATX_DATA_PARTITION;
                return TRUE;
            }
            return FALSE;
        }
        default:
        {
            ERR("Drive 0x%X partition type = %d, should not happen!\n", DriveNumber, DiskPartitionType[DriveNumber]);
            ASSERT(FALSE);
        }
    }
    return FALSE;
}

Referenced by DiskGetBootPath().

DiskGetErrorCodeString()

PCSTR DiskGetErrorCodeString

(

_In_ ULONG

ErrorCode

)

Definition at line 136 of file pcdisk.c.

{
    switch (ErrorCode)
    {
    case 0x00:  return "No error";
    case 0x01:  return "Bad command passed to driver";
    case 0x02:  return "Address mark not found or bad sector";
    case 0x03:  return "Diskette write protect error";
    case 0x04:  return "Sector not found";
    case 0x05:  return "Fixed disk reset failed";
    case 0x06:  return "Diskette changed or removed";
    case 0x07:  return "Bad fixed disk parameter table";
    case 0x08:  return "DMA overrun";
    case 0x09:  return "DMA access across 64k boundary";
    case 0x0A:  return "Bad fixed disk sector flag";
    case 0x0B:  return "Bad fixed disk cylinder";
    case 0x0C:  return "Unsupported track/invalid media";
    case 0x0D:  return "Invalid number of sectors on fixed disk format";
    case 0x0E:  return "Fixed disk controlled data address mark detected";
    case 0x0F:  return "Fixed disk DMA arbitration level out of range";
    case 0x10:  return "ECC/CRC error on disk read";
    case 0x11:  return "Recoverable fixed disk data error, data fixed by ECC";
    case 0x20:  return "Controller error (NEC for floppies)";
    case 0x40:  return "Seek failure";
    case 0x80:  return "Time out, drive not ready";
    case 0xAA:  return "Fixed disk drive not ready";
    case 0xBB:  return "Fixed disk undefined error";
    case 0xCC:  return "Fixed disk write fault on selected drive";
    case 0xE0:  return "Fixed disk status error/Error reg = 0";
    case 0xFF:  return "Sense operation failed";
 
    default:    return "Unknown error code";
    }
}

Referenced by DiskError(), Pc98DiskReadLogicalSectorsCHS(), Pc98DiskReadLogicalSectorsLBA(), PcDiskReadLogicalSectorsCHS(), and PcDiskReadLogicalSectorsLBA().

DiskGetPartitionEntry()

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

Definition at line 178 of file partition.c.

{
    if (SectorSize == 0)
    {
        GEOMETRY Geometry;
        if (!MachDiskGetDriveGeometry(DriveNumber, &Geometry))
            return FALSE;
        SectorSize = Geometry.BytesPerSector;
    }
    if (SectorSize < 512)
    {
        ERR("Drive 0x%X: Invalid sector size %lu\n", DriveNumber, SectorSize);
        return FALSE;
    }
 
    switch (DiskPartitionType[DriveNumber])
    {
        case PARTITION_STYLE_MBR:
        {
            return DiskGetMbrPartitionEntry(DriveNumber,
            /* MBR partition table always uses 512-byte sectors per specification */
                                            512, // SectorSize
                                            PartitionNumber,
                                            PartitionEntry);
        }
        case PARTITION_STYLE_GPT:
        {
            return DiskGetGptPartitionEntry(DriveNumber,
                                            SectorSize,
                                            PartitionNumber,
                                            PartitionEntry);
        }
        case PARTITION_STYLE_RAW:
        {
            FIXME("DiskGetPartitionEntry() unimplemented for RAW\n");
            return FALSE;
        }
        case PARTITION_STYLE_BRFR:
        {
            return DiskGetBrfrPartitionEntry(DriveNumber,
                                             512, // SectorSize
                                             PartitionNumber,
                                             PartitionEntry);
        }
        default:
        {
            ERR("Drive 0x%X partition type = %d, should not happen!\n", DriveNumber, DiskPartitionType[DriveNumber]);
            ASSERT(FALSE);
        }
    }
    return FALSE;
}

Referenced by DiskInitialize(), DiskOpen(), UefiDiskOpen(), and UefiGetBootPartitionEntry().

DiskInitialize()

ARC_STATUS DiskInitialize	(	_In_ UCHAR	DriveNumber,
		_In_ PCSTR	DeviceName,
		_In_ CONFIGURATION_TYPE	DeviceType,
		_In_ const struct tagDEVVTBL *	FuncTable,
		_Out_opt_ PULONG	pChecksum,
		_Out_opt_ PULONG	pSignature,
		_Out_opt_ PBOOLEAN	pValidPartitionTable
	)

DiskReportError()

LONG DiskReportError

(

_In_ BOOLEAN

bShowError

)

Definition at line 38 of file disk.c.

{
    /* Set the reference count */
    if (bShowError) ++lReportError;
    else            --lReportError;
    return lReportError;
}

Referenced by EnumerateHarddisks(), GetHarddiskInformation(), PcInitializeBootDevices(), and UefiInitializeBootDevices().

FrldrGetBootDrive()

UCHAR FrldrGetBootDrive

(

VOID

)

Definition at line 202 of file freeldr.c.

{
    return FrldrBootDrive;
}

FrldrGetBootPartition()

ULONG FrldrGetBootPartition

(

VOID

)

Definition at line 207 of file freeldr.c.

{
    return FrldrBootPartition;
}

FrLdrGetBootPath()

PCCHAR FrLdrGetBootPath

(

VOID

)

Definition at line 197 of file freeldr.c.

{
    return FrLdrBootPath;
}

Referenced by BuildArgvForOsLoader(), and LoadBootDeviceDriver().

LoadBootDeviceDriver()

ULONG LoadBootDeviceDriver

(

VOID

)

Definition at line 1656 of file scsiport.c.

{
    PLDR_DATA_TABLE_ENTRY BootDdDTE;
    CHAR NtBootDdPath[MAX_PATH];
    PVOID ImageBase = NULL;
    ULONG (NTAPI *EntryPoint)(IN PVOID DriverObject, IN PVOID RegistryPath);
    BOOLEAN Success;
 
    // FIXME: Must be done *INSIDE* the HAL!
#ifdef _M_IX86
    HalpInitializePciStubs();
    HalpInitBusHandler();
#endif
 
    /* Create full ntbootdd.sys path */
    strcpy(NtBootDdPath, FrLdrGetBootPath());
    strcat(NtBootDdPath, "\\NTBOOTDD.SYS");
 
    /* Load ntbootdd.sys */
    Success = PeLdrLoadBootImage(NtBootDdPath,
                                 "ntbootdd.sys",
                                 ImageBase,
                                 &BootDdDTE);
    if (!Success)
    {
        /* That's OK, file simply doesn't exist */
        return ESUCCESS;
    }
 
    /* Call the entrypoint */
    EntryPoint = VaToPa(BootDdDTE->EntryPoint);
    (*EntryPoint)(NULL, NULL);
 
    return ESUCCESS;
}

Referenced by RunLoader().

Variable Documentation

DiskReadBuffer

PVOID DiskReadBuffer

extern

Definition at line 47 of file hwdisk.c.

Referenced by DiskRead(), EnumerateHarddisks(), UefiDiskRead(), UefiDiskReadLogicalSectors(), UefiEnsureDiskReadBufferAligned(), UefiGetBootPartitionEntry(), and UefiInitializeBootDevices().

DiskReadBufferSize

SIZE_T DiskReadBufferSize

extern

Definition at line 48 of file hwdisk.c.

Referenced by DiskOpen(), DiskRead(), EnumerateHarddisks(), PcMemFinalizeMemoryMap(), UefiDiskOpen(), UefiDiskRead(), UefiDiskReadLogicalSectors(), UefiEnsureDiskReadBufferAligned(), and UefiInitializeBootDevices().

FrLdrBootPath

CCHAR FrLdrBootPath[MAX_PATH]

extern

Definition at line 29 of file freeldr.c.

Referenced by ArmInitializeBootDevices(), DiskGetBootPath(), FrLdrGetBootPath(), IniFileInitialize(), LoadRosload(), PcInitializeBootDevices(), UefiInitializeBootDevices(), and UefiSetBootpath().