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reactos/base/system/diskpart/partlist.c

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/*
* PROJECT: ReactOS DiskPart
* LICENSE: GPL - See COPYING in the top level directory
* FILE: base/system/diskpart/partlist.c
* PURPOSE: Manages all the partitions of the OS in an interactive way.
* PROGRAMMERS: Eric Kohl
*/
/* INCLUDES *******************************************************************/
#include "diskpart.h"
#include <ntddscsi.h>
#define NDEBUG
#include <debug.h>
#define InsertAscendingList(ListHead, NewEntry, Type, ListEntryField, SortField)\
{\
PLIST_ENTRY current;\
\
current = (ListHead)->Flink;\
while (current != (ListHead))\
{\
if (CONTAINING_RECORD(current, Type, ListEntryField)->SortField >=\
(NewEntry)->SortField)\
{\
break;\
}\
current = current->Flink;\
}\
\
InsertTailList(current, &((NewEntry)->ListEntryField));\
}
/* We have to define it there, because it is not in the MS DDK */
#define PARTITION_LINUX 0x83
#define PARTITION_TBL_SIZE 4
#include <pshpack1.h>
typedef struct _PARTITION
{
unsigned char BootFlags; /* bootable? 0=no, 128=yes */
unsigned char StartingHead; /* beginning head number */
unsigned char StartingSector; /* beginning sector number */
unsigned char StartingCylinder; /* 10 bit nmbr, with high 2 bits put in begsect */
unsigned char PartitionType; /* Operating System type indicator code */
unsigned char EndingHead; /* ending head number */
unsigned char EndingSector; /* ending sector number */
unsigned char EndingCylinder; /* also a 10 bit nmbr, with same high 2 bit trick */
unsigned int StartingBlock; /* first sector relative to start of disk */
unsigned int SectorCount; /* number of sectors in partition */
} PARTITION, *PPARTITION;
typedef struct _PARTITION_SECTOR
{
UCHAR BootCode[440]; /* 0x000 */
ULONG Signature; /* 0x1B8 */
UCHAR Reserved[2]; /* 0x1BC */
PARTITION Partition[PARTITION_TBL_SIZE]; /* 0x1BE */
USHORT Magic; /* 0x1FE */
} PARTITION_SECTOR, *PPARTITION_SECTOR;
#include <poppack.h>
/* GLOBALS ********************************************************************/
LIST_ENTRY DiskListHead;
LIST_ENTRY BiosDiskListHead;
LIST_ENTRY VolumeListHead;
PDISKENTRY CurrentDisk = NULL;
PPARTENTRY CurrentPartition = NULL;
PVOLENTRY CurrentVolume = NULL;
/* FUNCTIONS ******************************************************************/
ULONGLONG
AlignDown(
_In_ ULONGLONG Value,
_In_ ULONG Alignment)
{
ULONGLONG Temp;
Temp = Value / Alignment;
return Temp * Alignment;
}
static
VOID
GetDriverName(
PDISKENTRY DiskEntry)
{
RTL_QUERY_REGISTRY_TABLE QueryTable[2];
WCHAR KeyName[32];
NTSTATUS Status;
RtlInitUnicodeString(&DiskEntry->DriverName,
NULL);
StringCchPrintfW(KeyName, ARRAYSIZE(KeyName),
L"\\Scsi\\Scsi Port %lu",
DiskEntry->Port);
RtlZeroMemory(&QueryTable,
sizeof(QueryTable));
QueryTable[0].Name = L"Driver";
QueryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
QueryTable[0].EntryContext = &DiskEntry->DriverName;
Status = RtlQueryRegistryValues(RTL_REGISTRY_DEVICEMAP,
KeyName,
QueryTable,
NULL,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("RtlQueryRegistryValues() failed (Status %lx)\n", Status);
}
}
static
NTSTATUS
NTAPI
DiskIdentifierQueryRoutine(
PWSTR ValueName,
ULONG ValueType,
PVOID ValueData,
ULONG ValueLength,
PVOID Context,
PVOID EntryContext)
{
PBIOSDISKENTRY BiosDiskEntry = (PBIOSDISKENTRY)Context;
UNICODE_STRING NameU;
if (ValueType == REG_SZ &&
ValueLength == 20 * sizeof(WCHAR))
{
NameU.Buffer = (PWCHAR)ValueData;
NameU.Length = NameU.MaximumLength = 8 * sizeof(WCHAR);
RtlUnicodeStringToInteger(&NameU, 16, &BiosDiskEntry->Checksum);
NameU.Buffer = (PWCHAR)ValueData + 9;
RtlUnicodeStringToInteger(&NameU, 16, &BiosDiskEntry->Signature);
return STATUS_SUCCESS;
}
return STATUS_UNSUCCESSFUL;
}
static
NTSTATUS
NTAPI
DiskConfigurationDataQueryRoutine(
PWSTR ValueName,
ULONG ValueType,
PVOID ValueData,
ULONG ValueLength,
PVOID Context,
PVOID EntryContext)
{
PBIOSDISKENTRY BiosDiskEntry = (PBIOSDISKENTRY)Context;
PCM_FULL_RESOURCE_DESCRIPTOR FullResourceDescriptor;
PCM_DISK_GEOMETRY_DEVICE_DATA DiskGeometry;
ULONG i;
if (ValueType != REG_FULL_RESOURCE_DESCRIPTOR ||
ValueLength < sizeof(CM_FULL_RESOURCE_DESCRIPTOR))
return STATUS_UNSUCCESSFUL;
FullResourceDescriptor = (PCM_FULL_RESOURCE_DESCRIPTOR)ValueData;
/* Hm. Version and Revision are not set on Microsoft Windows XP... */
#if 0
if (FullResourceDescriptor->PartialResourceList.Version != 1 ||
FullResourceDescriptor->PartialResourceList.Revision != 1)
return STATUS_UNSUCCESSFUL;
#endif
for (i = 0; i < FullResourceDescriptor->PartialResourceList.Count; i++)
{
if (FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].Type != CmResourceTypeDeviceSpecific ||
FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].u.DeviceSpecificData.DataSize != sizeof(CM_DISK_GEOMETRY_DEVICE_DATA))
continue;
DiskGeometry = (PCM_DISK_GEOMETRY_DEVICE_DATA)&FullResourceDescriptor->PartialResourceList.PartialDescriptors[i + 1];
BiosDiskEntry->DiskGeometry = *DiskGeometry;
return STATUS_SUCCESS;
}
return STATUS_UNSUCCESSFUL;
}
static
NTSTATUS
NTAPI
SystemConfigurationDataQueryRoutine(
PWSTR ValueName,
ULONG ValueType,
PVOID ValueData,
ULONG ValueLength,
PVOID Context,
PVOID EntryContext)
{
PCM_FULL_RESOURCE_DESCRIPTOR FullResourceDescriptor;
PCM_INT13_DRIVE_PARAMETER* Int13Drives = (PCM_INT13_DRIVE_PARAMETER*)Context;
ULONG i;
if (ValueType != REG_FULL_RESOURCE_DESCRIPTOR ||
ValueLength < sizeof (CM_FULL_RESOURCE_DESCRIPTOR))
return STATUS_UNSUCCESSFUL;
FullResourceDescriptor = (PCM_FULL_RESOURCE_DESCRIPTOR)ValueData;
/* Hm. Version and Revision are not set on Microsoft Windows XP... */
#if 0
if (FullResourceDescriptor->PartialResourceList.Version != 1 ||
FullResourceDescriptor->PartialResourceList.Revision != 1)
return STATUS_UNSUCCESSFUL;
#endif
for (i = 0; i < FullResourceDescriptor->PartialResourceList.Count; i++)
{
if (FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].Type != CmResourceTypeDeviceSpecific ||
FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].u.DeviceSpecificData.DataSize % sizeof(CM_INT13_DRIVE_PARAMETER) != 0)
continue;
*Int13Drives = (CM_INT13_DRIVE_PARAMETER*)RtlAllocateHeap(RtlGetProcessHeap(), 0,
FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].u.DeviceSpecificData.DataSize);
if (*Int13Drives == NULL)
return STATUS_NO_MEMORY;
memcpy(*Int13Drives,
&FullResourceDescriptor->PartialResourceList.PartialDescriptors[i + 1],
FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].u.DeviceSpecificData.DataSize);
return STATUS_SUCCESS;
}
return STATUS_UNSUCCESSFUL;
}
#define ROOT_NAME L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter"
static
VOID
EnumerateBiosDiskEntries(VOID)
{
RTL_QUERY_REGISTRY_TABLE QueryTable[3];
WCHAR Name[120];
ULONG AdapterCount;
ULONG DiskCount;
NTSTATUS Status;
PCM_INT13_DRIVE_PARAMETER Int13Drives;
PBIOSDISKENTRY BiosDiskEntry;
memset(QueryTable, 0, sizeof(QueryTable));
QueryTable[1].Name = L"Configuration Data";
QueryTable[1].QueryRoutine = SystemConfigurationDataQueryRoutine;
Int13Drives = NULL;
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System",
&QueryTable[1],
(PVOID)&Int13Drives,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("Unable to query the 'Configuration Data' key in '\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System', status=%lx\n", Status);
return;
}
AdapterCount = 0;
while (1)
{
StringCchPrintfW(Name, ARRAYSIZE(Name),
L"%s\\%lu", ROOT_NAME, AdapterCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
&QueryTable[2],
NULL,
NULL);
if (!NT_SUCCESS(Status))
{
break;
}
StringCchPrintfW(Name, ARRAYSIZE(Name),
L"%s\\%lu\\DiskController", ROOT_NAME, AdapterCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
&QueryTable[2],
NULL,
NULL);
if (NT_SUCCESS(Status))
{
while (1)
{
StringCchPrintfW(Name, ARRAYSIZE(Name),
L"%s\\%lu\\DiskController\\0", ROOT_NAME, AdapterCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
&QueryTable[2],
NULL,
NULL);
if (!NT_SUCCESS(Status))
{
RtlFreeHeap(RtlGetProcessHeap(), 0, Int13Drives);
return;
}
StringCchPrintfW(Name, ARRAYSIZE(Name),
L"%s\\%lu\\DiskController\\0\\DiskPeripheral", ROOT_NAME, AdapterCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
&QueryTable[2],
NULL,
NULL);
if (NT_SUCCESS(Status))
{
QueryTable[0].Name = L"Identifier";
QueryTable[0].QueryRoutine = DiskIdentifierQueryRoutine;
QueryTable[1].Name = L"Configuration Data";
QueryTable[1].QueryRoutine = DiskConfigurationDataQueryRoutine;
DiskCount = 0;
while (1)
{
BiosDiskEntry = (BIOSDISKENTRY*)RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BIOSDISKENTRY));
if (BiosDiskEntry == NULL)
{
break;
}
StringCchPrintfW(Name, ARRAYSIZE(Name),
L"%s\\%lu\\DiskController\\0\\DiskPeripheral\\%lu", ROOT_NAME, AdapterCount, DiskCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
QueryTable,
(PVOID)BiosDiskEntry,
NULL);
if (!NT_SUCCESS(Status))
{
RtlFreeHeap(RtlGetProcessHeap(), 0, BiosDiskEntry);
break;
}
BiosDiskEntry->DiskNumber = DiskCount;
BiosDiskEntry->Recognized = FALSE;
if (DiskCount < Int13Drives[0].NumberDrives)
{
BiosDiskEntry->Int13DiskData = Int13Drives[DiskCount];
}
else
{
DPRINT1("Didn't find int13 drive datas for disk %u\n", DiskCount);
}
InsertTailList(&BiosDiskListHead, &BiosDiskEntry->ListEntry);
DPRINT("DiskNumber: %lu\n", BiosDiskEntry->DiskNumber);
DPRINT("Signature: %08lx\n", BiosDiskEntry->Signature);
DPRINT("Checksum: %08lx\n", BiosDiskEntry->Checksum);
DPRINT("BytesPerSector: %lu\n", BiosDiskEntry->DiskGeometry.BytesPerSector);
DPRINT("NumberOfCylinders: %lu\n", BiosDiskEntry->DiskGeometry.NumberOfCylinders);
DPRINT("NumberOfHeads: %lu\n", BiosDiskEntry->DiskGeometry.NumberOfHeads);
DPRINT("DriveSelect: %02x\n", BiosDiskEntry->Int13DiskData.DriveSelect);
DPRINT("MaxCylinders: %lu\n", BiosDiskEntry->Int13DiskData.MaxCylinders);
DPRINT("SectorsPerTrack: %d\n", BiosDiskEntry->Int13DiskData.SectorsPerTrack);
DPRINT("MaxHeads: %d\n", BiosDiskEntry->Int13DiskData.MaxHeads);
DPRINT("NumberDrives: %d\n", BiosDiskEntry->Int13DiskData.NumberDrives);
DiskCount++;
}
}
RtlFreeHeap(RtlGetProcessHeap(), 0, Int13Drives);
return;
}
}
AdapterCount++;
}
RtlFreeHeap(RtlGetProcessHeap(), 0, Int13Drives);
}
static
VOID
AddPartitionToDisk(
ULONG DiskNumber,
PDISKENTRY DiskEntry,
ULONG PartitionIndex,
BOOLEAN LogicalPartition)
{
PPARTITION_INFORMATION PartitionInfo;
PPARTENTRY PartEntry;
PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[PartitionIndex];
if (PartitionInfo->PartitionType == 0 ||
(LogicalPartition == TRUE && IsContainerPartition(PartitionInfo->PartitionType)))
return;
PartEntry = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(PARTENTRY));
if (PartEntry == NULL)
{
return;
}
PartEntry->DiskEntry = DiskEntry;
PartEntry->StartSector.QuadPart = (ULONGLONG)PartitionInfo->StartingOffset.QuadPart / DiskEntry->BytesPerSector;
PartEntry->SectorCount.QuadPart = (ULONGLONG)PartitionInfo->PartitionLength.QuadPart / DiskEntry->BytesPerSector;
PartEntry->BootIndicator = PartitionInfo->BootIndicator;
PartEntry->PartitionType = PartitionInfo->PartitionType;
PartEntry->LogicalPartition = LogicalPartition;
PartEntry->IsPartitioned = TRUE;
PartEntry->PartitionNumber = PartitionInfo->PartitionNumber;
PartEntry->PartitionIndex = PartitionIndex;
if (IsContainerPartition(PartEntry->PartitionType))
{
PartEntry->FormatState = Unformatted;
if (LogicalPartition == FALSE && DiskEntry->ExtendedPartition == NULL)
DiskEntry->ExtendedPartition = PartEntry;
}
else if ((PartEntry->PartitionType == PARTITION_FAT_12) ||
(PartEntry->PartitionType == PARTITION_FAT_16) ||
(PartEntry->PartitionType == PARTITION_HUGE) ||
(PartEntry->PartitionType == PARTITION_XINT13) ||
(PartEntry->PartitionType == PARTITION_FAT32) ||
(PartEntry->PartitionType == PARTITION_FAT32_XINT13))
{
#if 0
if (CheckFatFormat())
{
PartEntry->FormatState = Preformatted;
}
else
{
PartEntry->FormatState = Unformatted;
}
#endif
PartEntry->FormatState = Preformatted;
}
else if (PartEntry->PartitionType == PARTITION_LINUX)
{
#if 0
if (CheckExt2Format())
{
PartEntry->FormatState = Preformatted;
}
else
{
PartEntry->FormatState = Unformatted;
}
#endif
PartEntry->FormatState = Preformatted;
}
else if (PartEntry->PartitionType == PARTITION_IFS)
{
#if 0
if (CheckNtfsFormat())
{
PartEntry->FormatState = Preformatted;
}
else if (CheckHpfsFormat())
{
PartEntry->FormatState = Preformatted;
}
else
{
PartEntry->FormatState = Unformatted;
}
#endif
PartEntry->FormatState = Preformatted;
}
else
{
PartEntry->FormatState = UnknownFormat;
}
if (LogicalPartition)
InsertTailList(&DiskEntry->LogicalPartListHead,
&PartEntry->ListEntry);
else
InsertTailList(&DiskEntry->PrimaryPartListHead,
&PartEntry->ListEntry);
}
static
VOID
ScanForUnpartitionedDiskSpace(
PDISKENTRY DiskEntry)
{
ULONGLONG LastStartSector;
ULONGLONG LastSectorCount;
ULONGLONG LastUnusedSectorCount;
PPARTENTRY PartEntry;
PPARTENTRY NewPartEntry;
PLIST_ENTRY Entry;
DPRINT("ScanForUnpartitionedDiskSpace()\n");
if (IsListEmpty(&DiskEntry->PrimaryPartListHead))
{
DPRINT1("No primary partition!\n");
/* Create a partition table that represents the empty disk */
NewPartEntry = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(PARTENTRY));
if (NewPartEntry == NULL)
return;
NewPartEntry->DiskEntry = DiskEntry;
NewPartEntry->IsPartitioned = FALSE;
NewPartEntry->StartSector.QuadPart = (ULONGLONG)DiskEntry->SectorAlignment;
NewPartEntry->SectorCount.QuadPart = AlignDown(DiskEntry->SectorCount.QuadPart, DiskEntry->SectorAlignment) -
NewPartEntry->StartSector.QuadPart;
DPRINT1("First Sector: %I64u\n", NewPartEntry->StartSector.QuadPart);
DPRINT1("Last Sector: %I64u\n", NewPartEntry->StartSector.QuadPart + NewPartEntry->SectorCount.QuadPart - 1);
DPRINT1("Total Sectors: %I64u\n", NewPartEntry->SectorCount.QuadPart);
NewPartEntry->FormatState = Unformatted;
InsertTailList(&DiskEntry->PrimaryPartListHead,
&NewPartEntry->ListEntry);
return;
}
/* Start partition at head 1, cylinder 0 */
LastStartSector = DiskEntry->SectorAlignment;
LastSectorCount = 0ULL;
LastUnusedSectorCount = 0ULL;
Entry = DiskEntry->PrimaryPartListHead.Flink;
while (Entry != &DiskEntry->PrimaryPartListHead)
{
PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
if (PartEntry->PartitionType != PARTITION_ENTRY_UNUSED ||
PartEntry->SectorCount.QuadPart != 0ULL)
{
LastUnusedSectorCount =
PartEntry->StartSector.QuadPart - (LastStartSector + LastSectorCount);
if (PartEntry->StartSector.QuadPart > (LastStartSector + LastSectorCount) &&
LastUnusedSectorCount >= (ULONGLONG)DiskEntry->SectorAlignment)
{
DPRINT("Unpartitioned disk space %I64u sectors\n", LastUnusedSectorCount);
NewPartEntry = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(PARTENTRY));
if (NewPartEntry == NULL)
return;
NewPartEntry->DiskEntry = DiskEntry;
NewPartEntry->IsPartitioned = FALSE;
NewPartEntry->StartSector.QuadPart = LastStartSector + LastSectorCount;
NewPartEntry->SectorCount.QuadPart = AlignDown(NewPartEntry->StartSector.QuadPart + LastUnusedSectorCount, DiskEntry->SectorAlignment) -
NewPartEntry->StartSector.QuadPart;
DPRINT1("First Sector: %I64u\n", NewPartEntry->StartSector.QuadPart);
DPRINT1("Last Sector: %I64u\n", NewPartEntry->StartSector.QuadPart + NewPartEntry->SectorCount.QuadPart - 1);
DPRINT1("Total Sectors: %I64u\n", NewPartEntry->SectorCount.QuadPart);
NewPartEntry->FormatState = Unformatted;
/* Insert the table into the list */
InsertTailList(&PartEntry->ListEntry,
&NewPartEntry->ListEntry);
}
LastStartSector = PartEntry->StartSector.QuadPart;
LastSectorCount = PartEntry->SectorCount.QuadPart;
}
Entry = Entry->Flink;
}
/* Check for trailing unpartitioned disk space */
if ((LastStartSector + LastSectorCount) < DiskEntry->SectorCount.QuadPart)
{
LastUnusedSectorCount = AlignDown(DiskEntry->SectorCount.QuadPart - (LastStartSector + LastSectorCount), DiskEntry->SectorAlignment);
if (LastUnusedSectorCount >= (ULONGLONG)DiskEntry->SectorAlignment)
{
DPRINT1("Unpartitioned disk space: %I64u sectors\n", LastUnusedSectorCount);
NewPartEntry = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(PARTENTRY));
if (NewPartEntry == NULL)
return;
NewPartEntry->DiskEntry = DiskEntry;
NewPartEntry->IsPartitioned = FALSE;
NewPartEntry->StartSector.QuadPart = LastStartSector + LastSectorCount;
NewPartEntry->SectorCount.QuadPart = AlignDown(NewPartEntry->StartSector.QuadPart + LastUnusedSectorCount, DiskEntry->SectorAlignment) -
NewPartEntry->StartSector.QuadPart;
DPRINT1("First Sector: %I64u\n", NewPartEntry->StartSector.QuadPart);
DPRINT1("Last Sector: %I64u\n", NewPartEntry->StartSector.QuadPart + NewPartEntry->SectorCount.QuadPart - 1);
DPRINT1("Total Sectors: %I64u\n", NewPartEntry->SectorCount.QuadPart);
NewPartEntry->FormatState = Unformatted;
/* Append the table to the list */
InsertTailList(&DiskEntry->PrimaryPartListHead,
&NewPartEntry->ListEntry);
}
}
if (DiskEntry->ExtendedPartition != NULL)
{
if (IsListEmpty(&DiskEntry->LogicalPartListHead))
{
DPRINT1("No logical partition!\n");
/* Create a partition table entry that represents the empty extended partition */
NewPartEntry = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(PARTENTRY));
if (NewPartEntry == NULL)
return;
NewPartEntry->DiskEntry = DiskEntry;
NewPartEntry->LogicalPartition = TRUE;
NewPartEntry->IsPartitioned = FALSE;
NewPartEntry->StartSector.QuadPart = DiskEntry->ExtendedPartition->StartSector.QuadPart + (ULONGLONG)DiskEntry->SectorAlignment;
NewPartEntry->SectorCount.QuadPart = DiskEntry->ExtendedPartition->SectorCount.QuadPart - (ULONGLONG)DiskEntry->SectorAlignment;
DPRINT1("First Sector: %I64u\n", NewPartEntry->StartSector.QuadPart);
DPRINT1("Last Sector: %I64u\n", NewPartEntry->StartSector.QuadPart + NewPartEntry->SectorCount.QuadPart - 1);
DPRINT1("Total Sectors: %I64u\n", NewPartEntry->SectorCount.QuadPart);
NewPartEntry->FormatState = Unformatted;
InsertTailList(&DiskEntry->LogicalPartListHead,
&NewPartEntry->ListEntry);
return;
}
/* Start partition at head 1, cylinder 0 */
LastStartSector = DiskEntry->ExtendedPartition->StartSector.QuadPart + (ULONGLONG)DiskEntry->SectorAlignment;
LastSectorCount = 0ULL;
LastUnusedSectorCount = 0ULL;
Entry = DiskEntry->LogicalPartListHead.Flink;
while (Entry != &DiskEntry->LogicalPartListHead)
{
PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
if (PartEntry->PartitionType != PARTITION_ENTRY_UNUSED ||
PartEntry->SectorCount.QuadPart != 0ULL)
{
LastUnusedSectorCount =
PartEntry->StartSector.QuadPart - (ULONGLONG)DiskEntry->SectorAlignment - (LastStartSector + LastSectorCount);
if ((PartEntry->StartSector.QuadPart - (ULONGLONG)DiskEntry->SectorAlignment) > (LastStartSector + LastSectorCount) &&
LastUnusedSectorCount >= (ULONGLONG)DiskEntry->SectorAlignment)
{
DPRINT("Unpartitioned disk space %I64u sectors\n", LastUnusedSectorCount);
NewPartEntry = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(PARTENTRY));
if (NewPartEntry == NULL)
return;
NewPartEntry->DiskEntry = DiskEntry;
NewPartEntry->LogicalPartition = TRUE;
NewPartEntry->IsPartitioned = FALSE;
NewPartEntry->StartSector.QuadPart = LastStartSector + LastSectorCount;
NewPartEntry->SectorCount.QuadPart = AlignDown(NewPartEntry->StartSector.QuadPart + LastUnusedSectorCount, DiskEntry->SectorAlignment) -
NewPartEntry->StartSector.QuadPart;
DPRINT("First Sector: %I64u\n", NewPartEntry->StartSector.QuadPart);
DPRINT("Last Sector: %I64u\n", NewPartEntry->StartSector.QuadPart + NewPartEntry->SectorCount.QuadPart - 1);
DPRINT("Total Sectors: %I64u\n", NewPartEntry->SectorCount.QuadPart);
NewPartEntry->FormatState = Unformatted;
/* Insert the table into the list */
InsertTailList(&PartEntry->ListEntry,
&NewPartEntry->ListEntry);
}
LastStartSector = PartEntry->StartSector.QuadPart;
LastSectorCount = PartEntry->SectorCount.QuadPart;
}
Entry = Entry->Flink;
}
/* Check for trailing unpartitioned disk space */
if ((LastStartSector + LastSectorCount) < DiskEntry->ExtendedPartition->StartSector.QuadPart + DiskEntry->ExtendedPartition->SectorCount.QuadPart)
{
LastUnusedSectorCount = AlignDown(DiskEntry->ExtendedPartition->StartSector.QuadPart + DiskEntry->ExtendedPartition->SectorCount.QuadPart - (LastStartSector + LastSectorCount),
DiskEntry->SectorAlignment);
if (LastUnusedSectorCount >= (ULONGLONG)DiskEntry->SectorAlignment)
{
DPRINT("Unpartitioned disk space: %I64u sectors\n", LastUnusedSectorCount);
NewPartEntry = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(PARTENTRY));
if (NewPartEntry == NULL)
return;
NewPartEntry->DiskEntry = DiskEntry;
NewPartEntry->LogicalPartition = TRUE;
NewPartEntry->IsPartitioned = FALSE;
NewPartEntry->StartSector.QuadPart = LastStartSector + LastSectorCount;
NewPartEntry->SectorCount.QuadPart = AlignDown(NewPartEntry->StartSector.QuadPart + LastUnusedSectorCount, DiskEntry->SectorAlignment) -
NewPartEntry->StartSector.QuadPart;
DPRINT("First Sector: %I64u\n", NewPartEntry->StartSector.QuadPart);
DPRINT("Last Sector: %I64u\n", NewPartEntry->StartSector.QuadPart + NewPartEntry->SectorCount.QuadPart - 1);
DPRINT("Total Sectors: %I64u\n", NewPartEntry->SectorCount.QuadPart);
NewPartEntry->FormatState = Unformatted;
/* Append the table to the list */
InsertTailList(&DiskEntry->LogicalPartListHead,
&NewPartEntry->ListEntry);
}
}
}
DPRINT("ScanForUnpartitionedDiskSpace() done\n");
}
static
VOID
AddDiskToList(
HANDLE FileHandle,
ULONG DiskNumber)
{
DISK_GEOMETRY DiskGeometry;
SCSI_ADDRESS ScsiAddress;
PDISKENTRY DiskEntry;
IO_STATUS_BLOCK Iosb;
NTSTATUS Status;
PPARTITION_SECTOR Mbr;
PULONG Buffer;
LARGE_INTEGER FileOffset;
WCHAR Identifier[20];
ULONG Checksum;
ULONG Signature;
ULONG i;
PLIST_ENTRY ListEntry;
PBIOSDISKENTRY BiosDiskEntry;
ULONG LayoutBufferSize;
PDRIVE_LAYOUT_INFORMATION NewLayoutBuffer;
Status = NtDeviceIoControlFile(FileHandle,
NULL,
NULL,
NULL,
&Iosb,
IOCTL_DISK_GET_DRIVE_GEOMETRY,
NULL,
0,
&DiskGeometry,
sizeof(DISK_GEOMETRY));
if (!NT_SUCCESS(Status))
{
return;
}
if (DiskGeometry.MediaType != FixedMedia &&
DiskGeometry.MediaType != RemovableMedia)
{
return;
}
Status = NtDeviceIoControlFile(FileHandle,
NULL,
NULL,
NULL,
&Iosb,
IOCTL_SCSI_GET_ADDRESS,
NULL,
0,
&ScsiAddress,
sizeof(SCSI_ADDRESS));
if (!NT_SUCCESS(Status))
{
return;
}
Mbr = (PARTITION_SECTOR*)RtlAllocateHeap(RtlGetProcessHeap(),
0,
DiskGeometry.BytesPerSector);
if (Mbr == NULL)
{
return;
}
FileOffset.QuadPart = 0;
Status = NtReadFile(FileHandle,
NULL,
NULL,
NULL,
&Iosb,
(PVOID)Mbr,
DiskGeometry.BytesPerSector,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
RtlFreeHeap(RtlGetProcessHeap(), 0, Mbr);
DPRINT1("NtReadFile failed, status=%x\n", Status);
return;
}
Signature = Mbr->Signature;
/* Calculate the MBR checksum */
Checksum = 0;
Buffer = (PULONG)Mbr;
for (i = 0; i < 128; i++)
{
Checksum += Buffer[i];
}
Checksum = ~Checksum + 1;
StringCchPrintfW(Identifier, ARRAYSIZE(Identifier),
L"%08x-%08x-A", Checksum, Signature);
DPRINT("Identifier: %S\n", Identifier);
DiskEntry = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(DISKENTRY));
if (DiskEntry == NULL)
{
return;
}
// DiskEntry->Checksum = Checksum;
// DiskEntry->Signature = Signature;
DiskEntry->BiosFound = FALSE;
/* Check if this disk has a valid MBR */
if (Mbr->BootCode[0] == 0 && Mbr->BootCode[1] == 0)
DiskEntry->NoMbr = TRUE;
else
DiskEntry->NoMbr = FALSE;
/* Free Mbr sector buffer */
RtlFreeHeap(RtlGetProcessHeap(), 0, Mbr);
ListEntry = BiosDiskListHead.Flink;
while (ListEntry != &BiosDiskListHead)
{
BiosDiskEntry = CONTAINING_RECORD(ListEntry, BIOSDISKENTRY, ListEntry);
/* FIXME:
* Compare the size from bios and the reported size from driver.
* If we have more than one disk with a zero or with the same signatur
* we must create new signatures and reboot. After the reboot,
* it is possible to identify the disks.
*/
if (BiosDiskEntry->Signature == Signature &&
BiosDiskEntry->Checksum == Checksum &&
!BiosDiskEntry->Recognized)
{
if (!DiskEntry->BiosFound)
{
DiskEntry->BiosDiskNumber = BiosDiskEntry->DiskNumber;
DiskEntry->BiosFound = TRUE;
BiosDiskEntry->Recognized = TRUE;
}
else
{
}
}
ListEntry = ListEntry->Flink;
}
if (!DiskEntry->BiosFound)
{
#if 0
RtlFreeHeap(ProcessHeap, 0, DiskEntry);
return;
#else
DPRINT1("WARNING: Setup could not find a matching BIOS disk entry. Disk %d is not be bootable by the BIOS!\n", DiskNumber);
#endif
}
InitializeListHead(&DiskEntry->PrimaryPartListHead);
InitializeListHead(&DiskEntry->LogicalPartListHead);
DiskEntry->Cylinders = DiskGeometry.Cylinders.QuadPart;
DiskEntry->TracksPerCylinder = DiskGeometry.TracksPerCylinder;
DiskEntry->SectorsPerTrack = DiskGeometry.SectorsPerTrack;
DiskEntry->BytesPerSector = DiskGeometry.BytesPerSector;
DPRINT("Cylinders %I64u\n", DiskEntry->Cylinders);
DPRINT("TracksPerCylinder %I64u\n", DiskEntry->TracksPerCylinder);
DPRINT("SectorsPerTrack %I64u\n", DiskEntry->SectorsPerTrack);
DPRINT("BytesPerSector %I64u\n", DiskEntry->BytesPerSector);
DiskEntry->SectorCount.QuadPart = DiskGeometry.Cylinders.QuadPart *
(ULONGLONG)DiskGeometry.TracksPerCylinder *
(ULONGLONG)DiskGeometry.SectorsPerTrack;
// DiskEntry->SectorAlignment = DiskGeometry.SectorsPerTrack;
// DiskEntry->CylinderAlignment = DiskGeometry.SectorsPerTrack * DiskGeometry.TracksPerCylinder;
DiskEntry->SectorAlignment = (1024 * 1024) / DiskGeometry.BytesPerSector;
DiskEntry->CylinderAlignment = (1024 * 1024) / DiskGeometry.BytesPerSector;
DPRINT1("SectorCount: %I64u\n", DiskEntry->SectorCount);
DPRINT1("SectorAlignment: %lu\n", DiskEntry->SectorAlignment);
DPRINT1("CylinderAlignment: %lu\n", DiskEntry->CylinderAlignment);
DiskEntry->DiskNumber = DiskNumber;
DiskEntry->Port = ScsiAddress.PortNumber;
DiskEntry->PathId = ScsiAddress.PathId;
DiskEntry->TargetId = ScsiAddress.TargetId;
DiskEntry->Lun = ScsiAddress.Lun;
GetDriverName(DiskEntry);
InsertAscendingList(&DiskListHead, DiskEntry, DISKENTRY, ListEntry, DiskNumber);
/* Allocate a layout buffer with 4 partition entries first */
LayoutBufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
((4 - ANYSIZE_ARRAY) * sizeof(PARTITION_INFORMATION));
DiskEntry->LayoutBuffer = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
LayoutBufferSize);
if (DiskEntry->LayoutBuffer == NULL)
{
DPRINT1("Failed to allocate the disk layout buffer!\n");
return;
}
for (;;)
{
DPRINT1("Buffer size: %lu\n", LayoutBufferSize);
Status = NtDeviceIoControlFile(FileHandle,
NULL,
NULL,
NULL,
&Iosb,
IOCTL_DISK_GET_DRIVE_LAYOUT,
NULL,
0,
DiskEntry->LayoutBuffer,
LayoutBufferSize);
if (NT_SUCCESS(Status))
break;
if (Status != STATUS_BUFFER_TOO_SMALL)
{
DPRINT1("NtDeviceIoControlFile() failed (Status: 0x%08lx)\n", Status);
return;
}
LayoutBufferSize += 4 * sizeof(PARTITION_INFORMATION);
NewLayoutBuffer = RtlReAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
DiskEntry->LayoutBuffer,
LayoutBufferSize);
if (NewLayoutBuffer == NULL)
{
DPRINT1("Failed to reallocate the disk layout buffer!\n");
return;
}
DiskEntry->LayoutBuffer = NewLayoutBuffer;
}
DPRINT1("PartitionCount: %lu\n", DiskEntry->LayoutBuffer->PartitionCount);
#ifdef DUMP_PARTITION_TABLE
DumpPartitionTable(DiskEntry);
#endif
if (DiskEntry->LayoutBuffer->PartitionEntry[0].StartingOffset.QuadPart != 0 &&
DiskEntry->LayoutBuffer->PartitionEntry[0].PartitionLength.QuadPart != 0 &&
DiskEntry->LayoutBuffer->PartitionEntry[0].PartitionType != 0)
{
if ((DiskEntry->LayoutBuffer->PartitionEntry[0].StartingOffset.QuadPart / DiskEntry->BytesPerSector) % DiskEntry->SectorsPerTrack == 0)
{
DPRINT("Use %lu Sector alignment!\n", DiskEntry->SectorsPerTrack);
}
else if (DiskEntry->LayoutBuffer->PartitionEntry[0].StartingOffset.QuadPart % (1024 * 1024) == 0)
{
DPRINT1("Use megabyte (%lu Sectors) alignment!\n", (1024 * 1024) / DiskEntry->BytesPerSector);
}
else
{
DPRINT1("No matching alignment found! Partition 1 starts at %I64u\n", DiskEntry->LayoutBuffer->PartitionEntry[0].StartingOffset.QuadPart);
}
}
else
{
DPRINT1("No valid partition table found! Use megabyte (%lu Sectors) alignment!\n", (1024 * 1024) / DiskEntry->BytesPerSector);
}
if (DiskEntry->LayoutBuffer->PartitionCount == 0)
{
DiskEntry->NewDisk = TRUE;
DiskEntry->LayoutBuffer->PartitionCount = 4;
for (i = 0; i < 4; i++)
DiskEntry->LayoutBuffer->PartitionEntry[i].RewritePartition = TRUE;
}
else
{
for (i = 0; i < 4; i++)
{
AddPartitionToDisk(DiskNumber, DiskEntry, i, FALSE);
}
for (i = 4; i < DiskEntry->LayoutBuffer->PartitionCount; i += 4)
{
AddPartitionToDisk(DiskNumber, DiskEntry, i, TRUE);
}
}
ScanForUnpartitionedDiskSpace(DiskEntry);
}
NTSTATUS
CreatePartitionList(VOID)
{
OBJECT_ATTRIBUTES ObjectAttributes;
SYSTEM_DEVICE_INFORMATION Sdi;
IO_STATUS_BLOCK Iosb;
ULONG ReturnSize;
NTSTATUS Status;
ULONG DiskNumber;
WCHAR Buffer[MAX_PATH];
UNICODE_STRING Name;
HANDLE FileHandle;
CurrentDisk = NULL;
CurrentPartition = NULL;
// BootDisk = NULL;
// BootPartition = NULL;
// TempDisk = NULL;
// TempPartition = NULL;
// FormatState = Start;
InitializeListHead(&DiskListHead);
InitializeListHead(&BiosDiskListHead);
EnumerateBiosDiskEntries();
Status = NtQuerySystemInformation(SystemDeviceInformation,
&Sdi,
sizeof(SYSTEM_DEVICE_INFORMATION),
&ReturnSize);
if (!NT_SUCCESS(Status))
{
return Status;
}
for (DiskNumber = 0; DiskNumber < Sdi.NumberOfDisks; DiskNumber++)
{
StringCchPrintfW(Buffer, ARRAYSIZE(Buffer),
L"\\Device\\Harddisk%d\\Partition0",
DiskNumber);
RtlInitUnicodeString(&Name,
Buffer);
InitializeObjectAttributes(&ObjectAttributes,
&Name,
0,
NULL,
NULL);
Status = NtOpenFile(&FileHandle,
FILE_READ_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE,
&ObjectAttributes,
&Iosb,
FILE_SHARE_READ,
FILE_SYNCHRONOUS_IO_NONALERT);
if (NT_SUCCESS(Status))
{
AddDiskToList(FileHandle, DiskNumber);
NtClose(FileHandle);
}
}
// UpdateDiskSignatures(List);
// AssignDriveLetters(List);
return STATUS_SUCCESS;
}
VOID
DestroyPartitionList(VOID)
{
PDISKENTRY DiskEntry;
PBIOSDISKENTRY BiosDiskEntry;
PPARTENTRY PartEntry;
PLIST_ENTRY Entry;
CurrentDisk = NULL;
CurrentPartition = NULL;
/* Release disk and partition info */
while (!IsListEmpty(&DiskListHead))
{
Entry = RemoveHeadList(&DiskListHead);
DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
/* Release driver name */
RtlFreeUnicodeString(&DiskEntry->DriverName);
/* Release primary partition list */
while (!IsListEmpty(&DiskEntry->PrimaryPartListHead))
{
Entry = RemoveHeadList(&DiskEntry->PrimaryPartListHead);
PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
RtlFreeHeap(RtlGetProcessHeap(), 0, PartEntry);
}
/* Release logical partition list */
while (!IsListEmpty(&DiskEntry->LogicalPartListHead))
{
Entry = RemoveHeadList(&DiskEntry->LogicalPartListHead);
PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
RtlFreeHeap(RtlGetProcessHeap(), 0, PartEntry);
}
/* Release layout buffer */
if (DiskEntry->LayoutBuffer != NULL)
RtlFreeHeap(RtlGetProcessHeap(), 0, DiskEntry->LayoutBuffer);
/* Release disk entry */
RtlFreeHeap(RtlGetProcessHeap(), 0, DiskEntry);
}
/* Release the bios disk info */
while (!IsListEmpty(&BiosDiskListHead))
{
Entry = RemoveHeadList(&BiosDiskListHead);
BiosDiskEntry = CONTAINING_RECORD(Entry, BIOSDISKENTRY, ListEntry);
RtlFreeHeap(RtlGetProcessHeap(), 0, BiosDiskEntry);
}
}
static
VOID
GetVolumeExtents(
_In_ HANDLE VolumeHandle,
_In_ PVOLENTRY VolumeEntry)
{
DWORD dwBytesReturned = 0, dwLength, i;
PVOLUME_DISK_EXTENTS pExtents;
BOOL bResult;
DWORD dwError;
dwLength = sizeof(VOLUME_DISK_EXTENTS);
pExtents = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, dwLength);
if (pExtents == NULL)
return;
bResult = DeviceIoControl(VolumeHandle,
IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,
NULL,
0,
pExtents,
dwLength,
&dwBytesReturned,
NULL);
if (!bResult)
{
dwError = GetLastError();
if (dwError != ERROR_MORE_DATA)
{
RtlFreeHeap(RtlGetProcessHeap(), 0, pExtents);
return;
}
else
{
dwLength = sizeof(VOLUME_DISK_EXTENTS) + ((pExtents->NumberOfDiskExtents - 1) * sizeof(DISK_EXTENT));
RtlFreeHeap(RtlGetProcessHeap(), 0, pExtents);
pExtents = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, dwLength);
if (pExtents == NULL)
{
return;
}
bResult = DeviceIoControl(VolumeHandle,
IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,
NULL,
0,
pExtents,
dwLength,
&dwBytesReturned,
NULL);
if (!bResult)
{
RtlFreeHeap(RtlGetProcessHeap(), 0, pExtents);
return;
}
}
}
for (i = 0; i < pExtents->NumberOfDiskExtents; i++)
VolumeEntry->Size.QuadPart += pExtents->Extents[i].ExtentLength.QuadPart;
VolumeEntry->pExtents = pExtents;
}
static
VOID
GetVolumeType(
_In_ HANDLE VolumeHandle,
_In_ PVOLENTRY VolumeEntry)
{
FILE_FS_DEVICE_INFORMATION DeviceInfo;
IO_STATUS_BLOCK IoStatusBlock;
NTSTATUS Status;
Status = NtQueryVolumeInformationFile(VolumeHandle,
&IoStatusBlock,
&DeviceInfo,
sizeof(FILE_FS_DEVICE_INFORMATION),
FileFsDeviceInformation);
if (!NT_SUCCESS(Status))
return;
switch (DeviceInfo.DeviceType)
{
case FILE_DEVICE_CD_ROM:
case FILE_DEVICE_CD_ROM_FILE_SYSTEM:
VolumeEntry->VolumeType = VOLUME_TYPE_CDROM;
break;
case FILE_DEVICE_DISK:
case FILE_DEVICE_DISK_FILE_SYSTEM:
if (DeviceInfo.Characteristics & FILE_REMOVABLE_MEDIA)
VolumeEntry->VolumeType = VOLUME_TYPE_REMOVABLE;
else
VolumeEntry->VolumeType = VOLUME_TYPE_PARTITION;
break;
default:
VolumeEntry->VolumeType = VOLUME_TYPE_UNKNOWN;
break;
}
}
static
VOID
AddVolumeToList(
ULONG ulVolumeNumber,
PWSTR pszVolumeName)
{
PVOLENTRY VolumeEntry;
HANDLE VolumeHandle;
DWORD dwError, dwLength;
WCHAR szPathNames[MAX_PATH + 1];
WCHAR szVolumeName[MAX_PATH + 1];
WCHAR szFilesystem[MAX_PATH + 1];
DWORD CharCount = 0;
size_t Index = 0;
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING Name;
IO_STATUS_BLOCK Iosb;
NTSTATUS Status;
DPRINT("AddVolumeToList(%S)\n", pszVolumeName);
VolumeEntry = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(VOLENTRY));
if (VolumeEntry == NULL)
return;
VolumeEntry->VolumeNumber = ulVolumeNumber;
wcscpy(VolumeEntry->VolumeName, pszVolumeName);
Index = wcslen(pszVolumeName) - 1;
pszVolumeName[Index] = L'\0';
CharCount = QueryDosDeviceW(&pszVolumeName[4], VolumeEntry->DeviceName, ARRAYSIZE(VolumeEntry->DeviceName));
pszVolumeName[Index] = L'\\';
if (CharCount == 0)
{
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeEntry);
return;
}
DPRINT("DeviceName: %S\n", VolumeEntry->DeviceName);
RtlInitUnicodeString(&Name, VolumeEntry->DeviceName);
InitializeObjectAttributes(&ObjectAttributes,
&Name,
0,
NULL,
NULL);
Status = NtOpenFile(&VolumeHandle,
SYNCHRONIZE,
&ObjectAttributes,
&Iosb,
0,
FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT | FILE_OPEN_FOR_BACKUP_INTENT);
if (NT_SUCCESS(Status))
{
GetVolumeType(VolumeHandle, VolumeEntry);
GetVolumeExtents(VolumeHandle, VolumeEntry);
NtClose(VolumeHandle);
}
if (GetVolumeInformationW(pszVolumeName,
szVolumeName,
MAX_PATH + 1,
NULL, // [out, optional] LPDWORD lpVolumeSerialNumber,
NULL, // [out, optional] LPDWORD lpMaximumComponentLength,
NULL, // [out, optional] LPDWORD lpFileSystemFlags,
szFilesystem,
MAX_PATH + 1))
{
VolumeEntry->pszLabel = RtlAllocateHeap(RtlGetProcessHeap(),
0,
(wcslen(szVolumeName) + 1) * sizeof(WCHAR));
if (VolumeEntry->pszLabel)
wcscpy(VolumeEntry->pszLabel, szVolumeName);
VolumeEntry->pszFilesystem = RtlAllocateHeap(RtlGetProcessHeap(),
0,
(wcslen(szFilesystem) + 1) * sizeof(WCHAR));
if (VolumeEntry->pszFilesystem)
wcscpy(VolumeEntry->pszFilesystem, szFilesystem);
}
else
{
dwError = GetLastError();
if (dwError == ERROR_UNRECOGNIZED_VOLUME)
{
VolumeEntry->pszFilesystem = RtlAllocateHeap(RtlGetProcessHeap(),
0,
(3 + 1) * sizeof(WCHAR));
if (VolumeEntry->pszFilesystem)
wcscpy(VolumeEntry->pszFilesystem, L"RAW");
}
}
if (GetVolumePathNamesForVolumeNameW(pszVolumeName,
szPathNames,
ARRAYSIZE(szPathNames),
&dwLength))
{
VolumeEntry->DriveLetter = szPathNames[0];
}
InsertTailList(&VolumeListHead,
&VolumeEntry->ListEntry);
}
NTSTATUS
CreateVolumeList(VOID)
{
HANDLE hVolume = INVALID_HANDLE_VALUE;
WCHAR szVolumeName[MAX_PATH];
ULONG ulVolumeNumber = 0;
BOOL Success;
CurrentVolume = NULL;
InitializeListHead(&VolumeListHead);
hVolume = FindFirstVolumeW(szVolumeName, ARRAYSIZE(szVolumeName));
if (hVolume == INVALID_HANDLE_VALUE)
{
return STATUS_UNSUCCESSFUL;
}
AddVolumeToList(ulVolumeNumber++, szVolumeName);
for (;;)
{
Success = FindNextVolumeW(hVolume, szVolumeName, ARRAYSIZE(szVolumeName));
if (!Success)
{
break;
}
AddVolumeToList(ulVolumeNumber++, szVolumeName);
}
FindVolumeClose(hVolume);
return STATUS_SUCCESS;
}
VOID
DestroyVolumeList(VOID)
{
PLIST_ENTRY Entry;
PVOLENTRY VolumeEntry;
CurrentVolume = NULL;
/* Release disk and partition info */
while (!IsListEmpty(&VolumeListHead))
{
Entry = RemoveHeadList(&VolumeListHead);
VolumeEntry = CONTAINING_RECORD(Entry, VOLENTRY, ListEntry);
if (VolumeEntry->pszLabel)
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeEntry->pszLabel);
if (VolumeEntry->pszFilesystem)
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeEntry->pszFilesystem);
if (VolumeEntry->pExtents)
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeEntry->pExtents);
/* Release disk entry */
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeEntry);
}
}
NTSTATUS
WritePartitions(
_In_ PDISKENTRY DiskEntry)
{
NTSTATUS Status;
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING Name;
HANDLE FileHandle;
IO_STATUS_BLOCK Iosb;
ULONG BufferSize;
PPARTITION_INFORMATION PartitionInfo;
ULONG PartitionCount;
PLIST_ENTRY ListEntry;
PPARTENTRY PartEntry;
WCHAR DstPath[MAX_PATH];
DPRINT("WritePartitions() Disk: %lu\n", DiskEntry->DiskNumber);
/* If the disk is not dirty, there is nothing to do */
if (!DiskEntry->Dirty)
return STATUS_SUCCESS;
StringCchPrintfW(DstPath, ARRAYSIZE(DstPath),
L"\\Device\\Harddisk%lu\\Partition0",
DiskEntry->DiskNumber);
RtlInitUnicodeString(&Name, DstPath);
InitializeObjectAttributes(&ObjectAttributes,
&Name,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtOpenFile(&FileHandle,
GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
&ObjectAttributes,
&Iosb,
0,
FILE_SYNCHRONOUS_IO_NONALERT);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtOpenFile() failed (Status %lx)\n", Status);
return Status;
}
//
// FIXME: We first *MUST* use IOCTL_DISK_CREATE_DISK to initialize
// the disk in MBR or GPT format in case the disk was not initialized!!
// For this we must ask the user which format to use.
//
/* Save the original partition count to be restored later (see comment below) */
PartitionCount = DiskEntry->LayoutBuffer->PartitionCount;
/* Set the new disk layout and retrieve its updated version with possibly modified partition numbers */
BufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
((PartitionCount - 1) * sizeof(PARTITION_INFORMATION));
Status = NtDeviceIoControlFile(FileHandle,
NULL,
NULL,
NULL,
&Iosb,
IOCTL_DISK_SET_DRIVE_LAYOUT,
DiskEntry->LayoutBuffer,
BufferSize,
DiskEntry->LayoutBuffer,
BufferSize);
NtClose(FileHandle);
/*
* IOCTL_DISK_SET_DRIVE_LAYOUT calls IoWritePartitionTable(), which converts
* DiskEntry->LayoutBuffer->PartitionCount into a partition *table* count,
* where such a table is expected to enumerate up to 4 partitions:
* partition *table* count == ROUND_UP(PartitionCount, 4) / 4 .
* Due to this we need to restore the original PartitionCount number.
*/
DiskEntry->LayoutBuffer->PartitionCount = PartitionCount;
/* Check whether the IOCTL_DISK_SET_DRIVE_LAYOUT call succeeded */
if (!NT_SUCCESS(Status))
{
DPRINT1("IOCTL_DISK_SET_DRIVE_LAYOUT failed (Status 0x%08lx)\n", Status);
return Status;
}
/* Update the partition numbers */
/* Update the primary partition table */
for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
ListEntry != &DiskEntry->PrimaryPartListHead;
ListEntry = ListEntry->Flink)
{
PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
if (PartEntry->IsPartitioned)
{
ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex];
PartEntry->PartitionNumber = PartitionInfo->PartitionNumber;
}
}
/* Update the logical partition table */
for (ListEntry = DiskEntry->LogicalPartListHead.Flink;
ListEntry != &DiskEntry->LogicalPartListHead;
ListEntry = ListEntry->Flink)
{
PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
if (PartEntry->IsPartitioned)
{
ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex];
PartEntry->PartitionNumber = PartitionInfo->PartitionNumber;
}
}
/* The layout has been successfully updated, the disk is not dirty anymore */
DiskEntry->Dirty = FALSE;
return Status;
}
static
BOOLEAN
IsEmptyLayoutEntry(
IN PPARTITION_INFORMATION PartitionInfo)
{
if (PartitionInfo->StartingOffset.QuadPart == 0 &&
PartitionInfo->PartitionLength.QuadPart == 0)
{
return TRUE;
}
return FALSE;
}
static
BOOLEAN
IsSamePrimaryLayoutEntry(
IN PPARTITION_INFORMATION PartitionInfo,
IN PDISKENTRY DiskEntry,
IN PPARTENTRY PartEntry)
{
if ((PartitionInfo->StartingOffset.QuadPart == PartEntry->StartSector.QuadPart * DiskEntry->BytesPerSector) &&
(PartitionInfo->PartitionLength.QuadPart == PartEntry->SectorCount.QuadPart * DiskEntry->BytesPerSector))
{
return TRUE;
}
return FALSE;
}
ULONG
GetPrimaryPartitionCount(
_In_ PDISKENTRY DiskEntry)
{
PLIST_ENTRY Entry;
PPARTENTRY PartEntry;
ULONG Count = 0;
for (Entry = DiskEntry->PrimaryPartListHead.Flink;
Entry != &DiskEntry->PrimaryPartListHead;
Entry = Entry->Flink)
{
PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
if (PartEntry->IsPartitioned)
Count++;
}
return Count;
}
static
ULONG
GetLogicalPartitionCount(
_In_ PDISKENTRY DiskEntry)
{
PLIST_ENTRY ListEntry;
PPARTENTRY PartEntry;
ULONG Count = 0;
for (ListEntry = DiskEntry->LogicalPartListHead.Flink;
ListEntry != &DiskEntry->LogicalPartListHead;
ListEntry = ListEntry->Flink)
{
PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
if (PartEntry->IsPartitioned)
Count++;
}
return Count;
}
static
BOOLEAN
ReAllocateLayoutBuffer(
_In_ PDISKENTRY DiskEntry)
{
PDRIVE_LAYOUT_INFORMATION NewLayoutBuffer;
ULONG NewPartitionCount;
ULONG CurrentPartitionCount = 0;
ULONG LayoutBufferSize;
ULONG i;
DPRINT1("ReAllocateLayoutBuffer()\n");
NewPartitionCount = 4 + GetLogicalPartitionCount(DiskEntry) * 4;
if (DiskEntry->LayoutBuffer)
CurrentPartitionCount = DiskEntry->LayoutBuffer->PartitionCount;
DPRINT1("CurrentPartitionCount: %lu ; NewPartitionCount: %lu\n",
CurrentPartitionCount, NewPartitionCount);
if (CurrentPartitionCount == NewPartitionCount)
return TRUE;
LayoutBufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
((NewPartitionCount - ANYSIZE_ARRAY) * sizeof(PARTITION_INFORMATION));
NewLayoutBuffer = RtlReAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
DiskEntry->LayoutBuffer,
LayoutBufferSize);
if (NewLayoutBuffer == NULL)
{
DPRINT1("Failed to allocate the new layout buffer (size: %lu)\n", LayoutBufferSize);
return FALSE;
}
NewLayoutBuffer->PartitionCount = NewPartitionCount;
/* If the layout buffer grows, make sure the new (empty) entries are written to the disk */
if (NewPartitionCount > CurrentPartitionCount)
{
for (i = CurrentPartitionCount; i < NewPartitionCount; i++)
{
NewLayoutBuffer->PartitionEntry[i].RewritePartition = TRUE;
}
}
DiskEntry->LayoutBuffer = NewLayoutBuffer;
return TRUE;
}
VOID
UpdateDiskLayout(
_In_ PDISKENTRY DiskEntry)
{
PPARTITION_INFORMATION PartitionInfo;
PPARTITION_INFORMATION LinkInfo = NULL;
PLIST_ENTRY ListEntry;
PPARTENTRY PartEntry;
LARGE_INTEGER HiddenSectors64;
ULONG Index;
ULONG PartitionNumber = 1;
DPRINT1("UpdateDiskLayout()\n");
/* Resize the layout buffer if necessary */
if (ReAllocateLayoutBuffer(DiskEntry) == FALSE)
{
DPRINT("ReAllocateLayoutBuffer() failed.\n");
return;
}
/* Update the primary partition table */
Index = 0;
for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
ListEntry != &DiskEntry->PrimaryPartListHead;
ListEntry = ListEntry->Flink)
{
PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
if (PartEntry->IsPartitioned)
{
ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index];
PartEntry->PartitionIndex = Index;
/* Reset the current partition number only for newly-created (unmounted) partitions */
if (PartEntry->New)
PartEntry->PartitionNumber = 0;
PartEntry->OnDiskPartitionNumber = (!IsContainerPartition(PartEntry->PartitionType) ? PartitionNumber : 0);
if (!IsSamePrimaryLayoutEntry(PartitionInfo, DiskEntry, PartEntry))
{
DPRINT1("Updating primary partition entry %lu\n", Index);
PartitionInfo->StartingOffset.QuadPart = PartEntry->StartSector.QuadPart * DiskEntry->BytesPerSector;
PartitionInfo->PartitionLength.QuadPart = PartEntry->SectorCount.QuadPart * DiskEntry->BytesPerSector;
PartitionInfo->HiddenSectors = PartEntry->StartSector.LowPart;
PartitionInfo->PartitionNumber = PartEntry->PartitionNumber;
PartitionInfo->PartitionType = PartEntry->PartitionType;
PartitionInfo->BootIndicator = PartEntry->BootIndicator;
PartitionInfo->RecognizedPartition = IsRecognizedPartition(PartEntry->PartitionType);
PartitionInfo->RewritePartition = TRUE;
}
if (!IsContainerPartition(PartEntry->PartitionType))
PartitionNumber++;
Index++;
}
}
ASSERT(Index <= 4);
/* Update the logical partition table */
Index = 4;
for (ListEntry = DiskEntry->LogicalPartListHead.Flink;
ListEntry != &DiskEntry->LogicalPartListHead;
ListEntry = ListEntry->Flink)
{
PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
if (PartEntry->IsPartitioned)
{
ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index];
PartEntry->PartitionIndex = Index;
/* Reset the current partition number only for newly-created (unmounted) partitions */
if (PartEntry->New)
PartEntry->PartitionNumber = 0;
PartEntry->OnDiskPartitionNumber = PartitionNumber;
DPRINT1("Updating logical partition entry %lu\n", Index);
PartitionInfo->StartingOffset.QuadPart = PartEntry->StartSector.QuadPart * DiskEntry->BytesPerSector;
PartitionInfo->PartitionLength.QuadPart = PartEntry->SectorCount.QuadPart * DiskEntry->BytesPerSector;
PartitionInfo->HiddenSectors = DiskEntry->SectorAlignment;
PartitionInfo->PartitionNumber = PartEntry->PartitionNumber;
PartitionInfo->PartitionType = PartEntry->PartitionType;
PartitionInfo->BootIndicator = FALSE;
PartitionInfo->RecognizedPartition = IsRecognizedPartition(PartEntry->PartitionType);
PartitionInfo->RewritePartition = TRUE;
/* Fill the link entry of the previous partition entry */
if (LinkInfo != NULL)
{
LinkInfo->StartingOffset.QuadPart = (PartEntry->StartSector.QuadPart - DiskEntry->SectorAlignment) * DiskEntry->BytesPerSector;
LinkInfo->PartitionLength.QuadPart = (PartEntry->StartSector.QuadPart + DiskEntry->SectorAlignment) * DiskEntry->BytesPerSector;
HiddenSectors64.QuadPart = PartEntry->StartSector.QuadPart - DiskEntry->SectorAlignment - DiskEntry->ExtendedPartition->StartSector.QuadPart;
LinkInfo->HiddenSectors = HiddenSectors64.LowPart;
LinkInfo->PartitionNumber = 0;
LinkInfo->PartitionType = PARTITION_EXTENDED;
LinkInfo->BootIndicator = FALSE;
LinkInfo->RecognizedPartition = FALSE;
LinkInfo->RewritePartition = TRUE;
}
/* Save a pointer to the link entry of the current partition entry */
LinkInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index + 1];
PartitionNumber++;
Index += 4;
}
}
/* Wipe unused primary partition entries */
for (Index = GetPrimaryPartitionCount(DiskEntry); Index < 4; Index++)
{
DPRINT1("Primary partition entry %lu\n", Index);
PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index];
if (!IsEmptyLayoutEntry(PartitionInfo))
{
DPRINT1("Wiping primary partition entry %lu\n", Index);
PartitionInfo->StartingOffset.QuadPart = 0;
PartitionInfo->PartitionLength.QuadPart = 0;
PartitionInfo->HiddenSectors = 0;
PartitionInfo->PartitionNumber = 0;
PartitionInfo->PartitionType = PARTITION_ENTRY_UNUSED;
PartitionInfo->BootIndicator = FALSE;
PartitionInfo->RecognizedPartition = FALSE;
PartitionInfo->RewritePartition = TRUE;
}
}
/* Wipe unused logical partition entries */
for (Index = 4; Index < DiskEntry->LayoutBuffer->PartitionCount; Index++)
{
if (Index % 4 >= 2)
{
DPRINT1("Logical partition entry %lu\n", Index);
PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index];
if (!IsEmptyLayoutEntry(PartitionInfo))
{
DPRINT1("Wiping partition entry %lu\n", Index);
PartitionInfo->StartingOffset.QuadPart = 0;
PartitionInfo->PartitionLength.QuadPart = 0;
PartitionInfo->HiddenSectors = 0;
PartitionInfo->PartitionNumber = 0;
PartitionInfo->PartitionType = PARTITION_ENTRY_UNUSED;
PartitionInfo->BootIndicator = FALSE;
PartitionInfo->RecognizedPartition = FALSE;
PartitionInfo->RewritePartition = TRUE;
}
}
}
DiskEntry->Dirty = TRUE;
}
PPARTENTRY
GetPrevUnpartitionedEntry(
_In_ PPARTENTRY PartEntry)
{
PDISKENTRY DiskEntry = PartEntry->DiskEntry;
PPARTENTRY PrevPartEntry;
PLIST_ENTRY ListHead;
if (PartEntry->LogicalPartition)
ListHead = &DiskEntry->LogicalPartListHead;
else
ListHead = &DiskEntry->PrimaryPartListHead;
if (PartEntry->ListEntry.Blink != ListHead)
{
PrevPartEntry = CONTAINING_RECORD(PartEntry->ListEntry.Blink,
PARTENTRY,
ListEntry);
if (!PrevPartEntry->IsPartitioned)
{
ASSERT(PrevPartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
return PrevPartEntry;
}
}
return NULL;
}
PPARTENTRY
GetNextUnpartitionedEntry(
_In_ PPARTENTRY PartEntry)
{
PDISKENTRY DiskEntry = PartEntry->DiskEntry;
PPARTENTRY NextPartEntry;
PLIST_ENTRY ListHead;
if (PartEntry->LogicalPartition)
ListHead = &DiskEntry->LogicalPartListHead;
else
ListHead = &DiskEntry->PrimaryPartListHead;
if (PartEntry->ListEntry.Flink != ListHead)
{
NextPartEntry = CONTAINING_RECORD(PartEntry->ListEntry.Flink,
PARTENTRY,
ListEntry);
if (!NextPartEntry->IsPartitioned)
{
ASSERT(NextPartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
return NextPartEntry;
}
}
return NULL;
}
NTSTATUS
DismountVolume(
_In_ PPARTENTRY PartEntry)
{
NTSTATUS Status;
NTSTATUS LockStatus;
UNICODE_STRING Name;
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK IoStatusBlock;
HANDLE PartitionHandle;
WCHAR Buffer[MAX_PATH];
/* Check whether the partition is valid and was mounted by the system */
if (!PartEntry->IsPartitioned ||
IsContainerPartition(PartEntry->PartitionType) ||
!IsRecognizedPartition(PartEntry->PartitionType) ||
PartEntry->FormatState == UnknownFormat ||
// NOTE: If FormatState == Unformatted but *FileSystem != 0 this means
// it has been usually mounted with RawFS and thus needs to be dismounted.
/* !*PartEntry->FileSystem || */
PartEntry->PartitionNumber == 0)
{
/* The partition is not mounted, so just return success */
return STATUS_SUCCESS;
}
ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
/* Open the volume */
StringCchPrintfW(Buffer, ARRAYSIZE(Buffer),
L"\\Device\\Harddisk%lu\\Partition%lu",
PartEntry->DiskEntry->DiskNumber,
PartEntry->PartitionNumber);
RtlInitUnicodeString(&Name, Buffer);
InitializeObjectAttributes(&ObjectAttributes,
&Name,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtOpenFile(&PartitionHandle,
GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
&ObjectAttributes,
&IoStatusBlock,
FILE_SHARE_READ | FILE_SHARE_WRITE,
FILE_SYNCHRONOUS_IO_NONALERT);
if (!NT_SUCCESS(Status))
{
DPRINT1("ERROR: Cannot open volume %wZ for dismounting! (Status 0x%lx)\n", &Name, Status);
return Status;
}
/* Lock the volume */
LockStatus = NtFsControlFile(PartitionHandle,
NULL,
NULL,
NULL,
&IoStatusBlock,
FSCTL_LOCK_VOLUME,
NULL,
0,
NULL,
0);
if (!NT_SUCCESS(LockStatus))
{
DPRINT1("WARNING: Failed to lock volume! Operations may fail! (Status 0x%lx)\n", LockStatus);
}
/* Dismount the volume */
Status = NtFsControlFile(PartitionHandle,
NULL,
NULL,
NULL,
&IoStatusBlock,
FSCTL_DISMOUNT_VOLUME,
NULL,
0,
NULL,
0);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to unmount volume (Status 0x%lx)\n", Status);
}
/* Unlock the volume */
LockStatus = NtFsControlFile(PartitionHandle,
NULL,
NULL,
NULL,
&IoStatusBlock,
FSCTL_UNLOCK_VOLUME,
NULL,
0,
NULL,
0);
if (!NT_SUCCESS(LockStatus))
{
DPRINT1("Failed to unlock volume (Status 0x%lx)\n", LockStatus);
}
/* Close the volume */
NtClose(PartitionHandle);
return Status;
}
PVOLENTRY
GetVolumeFromPartition(
_In_ PPARTENTRY PartEntry)
{
PLIST_ENTRY Entry;
PVOLENTRY VolumeEntry;
ULONG i;
if ((PartEntry == NULL) ||
(PartEntry->DiskEntry == NULL))
return NULL;
Entry = VolumeListHead.Flink;
while (Entry != &VolumeListHead)
{
VolumeEntry = CONTAINING_RECORD(Entry, VOLENTRY, ListEntry);
if (VolumeEntry->pExtents == NULL)
return NULL;
for (i = 0; i < VolumeEntry->pExtents->NumberOfDiskExtents; i++)
{
if (VolumeEntry->pExtents->Extents[i].DiskNumber == PartEntry->DiskEntry->DiskNumber)
{
if ((VolumeEntry->pExtents->Extents[i].StartingOffset.QuadPart == PartEntry->StartSector.QuadPart * PartEntry->DiskEntry->BytesPerSector) &&
(VolumeEntry->pExtents->Extents[i].ExtentLength.QuadPart == PartEntry->SectorCount.QuadPart * PartEntry->DiskEntry->BytesPerSector))
return VolumeEntry;
}
}
Entry = Entry->Flink;
}
return NULL;
}
VOID
RemoveVolume(
_In_ PVOLENTRY VolumeEntry)
{
if (VolumeEntry == NULL)
return;
if (VolumeEntry == CurrentVolume)
CurrentVolume = NULL;
RemoveEntryList(&VolumeEntry->ListEntry);
if (VolumeEntry->pszLabel)
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeEntry->pszLabel);
if (VolumeEntry->pszFilesystem)
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeEntry->pszFilesystem);
if (VolumeEntry->pExtents)
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeEntry->pExtents);
/* Release disk entry */
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeEntry);
}
/* EOF */
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