partlist.c File Reference

#include "precomp.h"
#include <ntddscsi.h>
#include "partlist.h"
#include "fsrec.h"
#include "registry.h"
#include <debug.h>
#include <pshpack1.h>
#include <poppack.h>

Include dependency graph for partlist.c:

Go to the source code of this file.

Classes
struct	_REG_DISK_MOUNT_INFO

Macros
#define	NDEBUG
#define	ROOT_NAME   L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter"
#define	GetPrimaryPartitionCount(DiskEntry)    GetPartitionCount(&(DiskEntry)->PrimaryPartListHead)
#define	GetLogicalPartitionCount(DiskEntry)

Typedefs
typedef struct _REG_DISK_MOUNT_INFO	REG_DISK_MOUNT_INFO
typedef struct _REG_DISK_MOUNT_INFO *	PREG_DISK_MOUNT_INFO

Functions
ULONGLONG	AlignDown (IN ULONGLONG Value, IN ULONG Alignment)
ULONGLONG	AlignUp (IN ULONGLONG Value, IN ULONG Alignment)
ULONGLONG	RoundingDivide (IN ULONGLONG Dividend, IN ULONGLONG Divisor)
static VOID	GetDriverName (IN PDISKENTRY DiskEntry)
static VOID	AssignDriveLetters (IN PPARTLIST List)
static NTSTATUS NTAPI	DiskIdentifierQueryRoutine (PWSTR ValueName, ULONG ValueType, PVOID ValueData, ULONG ValueLength, PVOID Context, PVOID EntryContext)
static NTSTATUS NTAPI	DiskConfigurationDataQueryRoutine (PWSTR ValueName, ULONG ValueType, PVOID ValueData, ULONG ValueLength, PVOID Context, PVOID EntryContext)
static NTSTATUS NTAPI	SystemConfigurationDataQueryRoutine (PWSTR ValueName, ULONG ValueType, PVOID ValueData, ULONG ValueLength, PVOID Context, PVOID EntryContext)
static VOID	EnumerateBiosDiskEntries (IN PPARTLIST PartList)
BOOLEAN	IsSuperFloppy (IN PDISKENTRY DiskEntry)
static BOOLEAN	InsertDiskRegion (IN PDISKENTRY DiskEntry, IN PPARTENTRY PartEntry, IN BOOLEAN LogicalPartition)
static PPARTENTRY	CreateInsertBlankRegion (IN PDISKENTRY DiskEntry, IN OUT PLIST_ENTRY ListHead, IN ULONGLONG StartSector, IN ULONGLONG SectorCount, IN BOOLEAN LogicalSpace)
static VOID	AddLogicalDiskSpace (_In_ PDISKENTRY DiskEntry)
static BOOLEAN	InitializePartitionEntry (_Inout_ PPARTENTRY PartEntry, _In_opt_ ULONGLONG SizeBytes, _In_opt_ ULONG_PTR PartitionInfo)
static VOID	AddPartitionToDisk (IN ULONG DiskNumber, IN PDISKENTRY DiskEntry, IN ULONG PartitionIndex, IN BOOLEAN LogicalPartition)
static VOID	ScanForUnpartitionedDiskSpace (IN PDISKENTRY DiskEntry)
static VOID	SetDiskSignature (IN PPARTLIST List, IN PDISKENTRY DiskEntry)
static VOID	UpdateDiskSignatures (IN PPARTLIST List)
static VOID	UpdateHwDiskNumbers (IN PPARTLIST List)
static VOID	AddDiskToList (IN HANDLE FileHandle, IN ULONG DiskNumber, IN PPARTLIST List)
static PDISKENTRY	GetSystemDisk (IN PPARTLIST List)
BOOLEAN	IsPartitionActive (IN PPARTENTRY PartEntry)
static PPARTENTRY	GetActiveDiskPartition (IN PDISKENTRY DiskEntry)
PPARTLIST	CreatePartitionList (VOID)
VOID	DestroyPartitionList (IN PPARTLIST List)
PDISKENTRY	GetDiskByBiosNumber (_In_ PPARTLIST List, _In_ ULONG HwDiskNumber)
PDISKENTRY	GetDiskByNumber (_In_ PPARTLIST List, _In_ ULONG DiskNumber)
PDISKENTRY	GetDiskBySCSI (_In_ PPARTLIST List, _In_ USHORT Port, _In_ USHORT Bus, _In_ USHORT Id)
PDISKENTRY	GetDiskBySignature (_In_ PPARTLIST List, _In_ ULONG Signature)
PPARTENTRY	GetPartition (_In_ PDISKENTRY DiskEntry, _In_ ULONG PartitionNumber)
PPARTENTRY	SelectPartition (_In_ PPARTLIST List, _In_ ULONG DiskNumber, _In_ ULONG PartitionNumber)
PPARTENTRY	GetNextPartition (IN PPARTLIST List, IN PPARTENTRY CurrentPart OPTIONAL)
PPARTENTRY	GetPrevPartition (IN PPARTLIST List, IN PPARTENTRY CurrentPart OPTIONAL)
static BOOLEAN	IsEmptyLayoutEntry (_In_ PPARTITION_INFORMATION PartitionInfo)
static BOOLEAN	IsSamePrimaryLayoutEntry (_In_ PPARTITION_INFORMATION PartitionInfo, _In_ PPARTENTRY PartEntry)
static ULONG	GetPartitionCount (_In_ PLIST_ENTRY PartListHead)
	Counts the number of partitioned disk regions in a given partition list.
static BOOLEAN	ReAllocateLayoutBuffer (IN PDISKENTRY DiskEntry)
static VOID	UpdateDiskLayout (IN PDISKENTRY DiskEntry)
static PPARTENTRY	GetAdjUnpartitionedEntry (_In_ PPARTENTRY PartEntry, _In_ BOOLEAN Direction)
	Retrieves, if any, the unpartitioned disk region that is adjacent (next or previous) to the specified partition.
ERROR_NUMBER	PartitionCreationChecks (_In_ PPARTENTRY PartEntry)
ERROR_NUMBER	ExtendedPartitionCreationChecks (_In_ PPARTENTRY PartEntry)
BOOLEAN	CreatePartition (_In_ PPARTLIST List, _Inout_ PPARTENTRY PartEntry, _In_opt_ ULONGLONG SizeBytes, _In_opt_ ULONG_PTR PartitionInfo)
NTSTATUS	DismountVolume (IN PPARTENTRY PartEntry)
BOOLEAN	DeletePartition (_In_ PPARTLIST List, _In_ PPARTENTRY PartEntry, _Out_opt_ PPARTENTRY *FreeRegion)
static BOOLEAN	IsSupportedActivePartition (IN PPARTENTRY PartEntry)
PPARTENTRY	FindSupportedSystemPartition (IN PPARTLIST List, IN BOOLEAN ForceSelect, IN PDISKENTRY AlternativeDisk OPTIONAL, IN PPARTENTRY AlternativePart OPTIONAL)
BOOLEAN	SetActivePartition (IN PPARTLIST List, IN PPARTENTRY PartEntry, IN PPARTENTRY OldActivePart OPTIONAL)
NTSTATUS	WritePartitions (IN PDISKENTRY DiskEntry)
BOOLEAN	WritePartitionsToDisk (IN PPARTLIST List)
BOOLEAN	SetMountedDeviceValue (IN WCHAR Letter, IN ULONG Signature, IN LARGE_INTEGER StartingOffset)
BOOLEAN	SetMountedDeviceValues (IN PPARTLIST List)
VOID	SetMBRPartitionType (IN PPARTENTRY PartEntry, IN UCHAR PartitionType)

Macro Definition Documentation

GetLogicalPartitionCount

#define GetLogicalPartitionCount

(

DiskEntry

)

Value:

    (((DiskEntry)->DiskStyle == PARTITION_STYLE_MBR) \
        ? GetPartitionCount(&(DiskEntry)->LogicalPartListHead) : 0)

Definition at line 2464 of file partlist.c.

GetPrimaryPartitionCount

#define GetPrimaryPartitionCount

(

DiskEntry

)

GetPartitionCount(&(DiskEntry)->PrimaryPartListHead)

Definition at line 2461 of file partlist.c.

NDEBUG

#define NDEBUG

Definition at line 16 of file partlist.c.

ROOT_NAME

#define ROOT_NAME   L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter"

Typedef Documentation

PREG_DISK_MOUNT_INFO

typedef struct _REG_DISK_MOUNT_INFO * PREG_DISK_MOUNT_INFO

REG_DISK_MOUNT_INFO

typedef struct _REG_DISK_MOUNT_INFO REG_DISK_MOUNT_INFO

Function Documentation

AddDiskToList()

static VOID AddDiskToList ( IN HANDLE  FileHandle, IN ULONG  DiskNumber, IN PPARTLIST  List  )

static

Definition at line 1382 of file partlist.c.

{
    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;
 
    /* Retrieve the drive geometry */
    Status = NtDeviceIoControlFile(FileHandle,
                                   NULL,
                                   NULL,
                                   NULL,
                                   &Iosb,
                                   IOCTL_DISK_GET_DRIVE_GEOMETRY,
                                   NULL,
                                   0,
                                   &DiskGeometry,
                                   sizeof(DiskGeometry));
    if (!NT_SUCCESS(Status))
        return;
 
    if (DiskGeometry.MediaType != FixedMedia &&
        DiskGeometry.MediaType != RemovableMedia)
    {
        return;
    }
 
    /*
     * FIXME: Here we suppose the disk is always SCSI. What if it is
     * of another type? To check this we need to retrieve the name of
     * the driver the disk device belongs to.
     */
    Status = NtDeviceIoControlFile(FileHandle,
                                   NULL,
                                   NULL,
                                   NULL,
                                   &Iosb,
                                   IOCTL_SCSI_GET_ADDRESS,
                                   NULL,
                                   0,
                                   &ScsiAddress,
                                   sizeof(ScsiAddress));
    if (!NT_SUCCESS(Status))
        return;
 
    /*
     * Check whether the disk is initialized, by looking at its MBR.
     * NOTE that this must be generalized to GPT disks as well!
     */
 
    Mbr = (PARTITION_SECTOR*)RtlAllocateHeap(ProcessHeap,
                                             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(ProcessHeap, 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;
 
    RtlStringCchPrintfW(Identifier, ARRAYSIZE(Identifier),
                        L"%08x-%08x-%c",
                        Checksum, Signature,
                        (Mbr->Magic == PARTITION_MAGIC) ? L'A' : L'X');
    DPRINT("Identifier: %S\n", Identifier);
 
    DiskEntry = RtlAllocateHeap(ProcessHeap,
                                HEAP_ZERO_MEMORY,
                                sizeof(DISKENTRY));
    if (DiskEntry == NULL)
    {
        RtlFreeHeap(ProcessHeap, 0, Mbr);
        DPRINT1("Failed to allocate a new disk entry.\n");
        return;
    }
 
    DiskEntry->PartList = List;
 
#if 0
    {
        FILE_FS_DEVICE_INFORMATION FileFsDevice;
 
        /* Query the device for its type */
        Status = NtQueryVolumeInformationFile(FileHandle,
                                              &Iosb,
                                              &FileFsDevice,
                                              sizeof(FileFsDevice),
                                              FileFsDeviceInformation);
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("Couldn't detect device type for disk %lu of identifier '%S'...\n", DiskNumber, Identifier);
        }
        else
        {
            DPRINT1("Disk %lu : DeviceType: 0x%08x ; Characteristics: 0x%08x\n", DiskNumber, FileFsDevice.DeviceType, FileFsDevice.Characteristics);
        }
    }
    // NOTE: We may also use NtQueryVolumeInformationFile(FileFsDeviceInformation).
#endif
    DiskEntry->MediaType = DiskGeometry.MediaType;
    if (DiskEntry->MediaType == RemovableMedia)
    {
        DPRINT1("Disk %lu of identifier '%S' is removable\n", DiskNumber, Identifier);
    }
    else // if (DiskEntry->MediaType == FixedMedia)
    {
        DPRINT1("Disk %lu of identifier '%S' is fixed\n", DiskNumber, Identifier);
    }
 
//    DiskEntry->Checksum = Checksum;
//    DiskEntry->Signature = Signature;
    DiskEntry->BiosFound = FALSE;
 
    /*
     * Check if this disk has a valid MBR: verify its signature,
     * and whether its two first bytes are a valid instruction
     * (related to this, see IsThereAValidBootSector() in partlist.c).
     *
     * See also ntoskrnl/fstub/fstubex.c!FstubDetectPartitionStyle().
     */
 
    // DiskEntry->NoMbr = (Mbr->Magic != PARTITION_MAGIC || (*(PUSHORT)Mbr->BootCode) == 0x0000);
 
    /* If we have not the 0xAA55 then it's raw partition */
    if (Mbr->Magic != PARTITION_MAGIC)
    {
        DiskEntry->DiskStyle = PARTITION_STYLE_RAW;
    }
    /* Check partitions types: if first is 0xEE and all the others 0, we have GPT */
    else if (Mbr->Partition[0].PartitionType == EFI_PMBR_OSTYPE_EFI &&
             Mbr->Partition[1].PartitionType == 0 &&
             Mbr->Partition[2].PartitionType == 0 &&
             Mbr->Partition[3].PartitionType == 0)
    {
        DiskEntry->DiskStyle = PARTITION_STYLE_GPT;
    }
    /* Otherwise, partition table is in MBR */
    else
    {
        DiskEntry->DiskStyle = PARTITION_STYLE_MBR;
    }
 
    /* Free the MBR sector buffer */
    RtlFreeHeap(ProcessHeap, 0, Mbr);
 
 
    for (ListEntry = List->BiosDiskListHead.Flink;
         ListEntry != &List->BiosDiskListHead;
         ListEntry = ListEntry->Flink)
    {
        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 signature
         *   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->DiskEntry == NULL)
        {
            if (!DiskEntry->BiosFound)
            {
                DiskEntry->HwAdapterNumber = BiosDiskEntry->AdapterNumber;
                DiskEntry->HwControllerNumber = BiosDiskEntry->ControllerNumber;
                DiskEntry->HwDiskNumber = BiosDiskEntry->DiskNumber;
 
                if (DiskEntry->MediaType == RemovableMedia)
                {
                    /* Set the removable disk number to zero */
                    DiskEntry->HwFixedDiskNumber = 0;
                }
                else // if (DiskEntry->MediaType == FixedMedia)
                {
                    /* The fixed disk number will later be adjusted using the number of removable disks */
                    DiskEntry->HwFixedDiskNumber = BiosDiskEntry->DiskNumber;
                }
 
                DiskEntry->BiosFound = TRUE;
                BiosDiskEntry->DiskEntry = DiskEntry;
                break;
            }
            else
            {
                // FIXME: What to do?
                DPRINT1("Disk %lu of identifier '%S' has already been found?!\n", DiskNumber, Identifier);
            }
        }
    }
 
    if (!DiskEntry->BiosFound)
    {
        DPRINT1("WARNING: Setup could not find a matching BIOS disk entry. Disk %lu may not be bootable by the BIOS!\n", DiskNumber);
    }
 
    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 %lu\n", DiskEntry->TracksPerCylinder);
    DPRINT("SectorsPerTrack %lu\n", DiskEntry->SectorsPerTrack);
    DPRINT("BytesPerSector %lu\n", DiskEntry->BytesPerSector);
 
    DiskEntry->SectorCount.QuadPart = DiskGeometry.Cylinders.QuadPart *
                                      (ULONGLONG)DiskGeometry.TracksPerCylinder *
                                      (ULONGLONG)DiskGeometry.SectorsPerTrack;
 
    DiskEntry->SectorAlignment = DiskGeometry.SectorsPerTrack;
    DiskEntry->CylinderAlignment = DiskGeometry.TracksPerCylinder *
                                   DiskGeometry.SectorsPerTrack;
 
    DPRINT("SectorCount %I64u\n", DiskEntry->SectorCount.QuadPart);
    DPRINT("SectorAlignment %lu\n", DiskEntry->SectorAlignment);
 
    DiskEntry->DiskNumber = DiskNumber;
    DiskEntry->Port = ScsiAddress.PortNumber;
    DiskEntry->Bus = ScsiAddress.PathId;
    DiskEntry->Id = ScsiAddress.TargetId;
 
    GetDriverName(DiskEntry);
    /*
     * Actually it would be more correct somehow to use:
     *
     * OBJECT_NAME_INFORMATION NameInfo; // ObjectNameInfo;
     * ULONG ReturnedLength;
     *
     * Status = NtQueryObject(SomeHandleToTheDisk,
     *                        ObjectNameInformation,
     *                        &NameInfo,
     *                        sizeof(NameInfo),
     *                        &ReturnedLength);
     * etc...
     *
     * See examples in https://git.reactos.org/?p=reactos.git;a=blob;f=reactos/ntoskrnl/io/iomgr/error.c;hb=2f3a93ee9cec8322a86bf74b356f1ad83fc912dc#l267
     */
 
    InitializeListHead(&DiskEntry->PrimaryPartListHead);
    InitializeListHead(&DiskEntry->LogicalPartListHead);
 
    InsertAscendingList(&List->DiskListHead, DiskEntry, DISKENTRY, ListEntry, DiskNumber);
 
 
    /*
     * We now retrieve the disk partition layout
     */
 
    /*
     * Stop there now if the disk is GPT-partitioned,
     * since we currently do not support such disks.
     */
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n");
        return;
    }
 
    /* Allocate a layout buffer with 4 partition entries first */
    LayoutBufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
                       ((4 - ANYSIZE_ARRAY) * sizeof(PARTITION_INFORMATION));
    DiskEntry->LayoutBuffer = RtlAllocateHeap(ProcessHeap,
                                              HEAP_ZERO_MEMORY,
                                              LayoutBufferSize);
    if (DiskEntry->LayoutBuffer == NULL)
    {
        DPRINT1("Failed to allocate the disk layout buffer!\n");
        return;
    }
 
    /* Keep looping while the drive layout buffer is too small */
    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(ProcessHeap,
                                            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 (IsSuperFloppy(DiskEntry))
        DPRINT1("Disk %lu is a super-floppy\n", DiskNumber);
 
    if (DiskEntry->LayoutBuffer->PartitionEntry[0].StartingOffset.QuadPart != 0 &&
        DiskEntry->LayoutBuffer->PartitionEntry[0].PartitionLength.QuadPart != 0 &&
        DiskEntry->LayoutBuffer->PartitionEntry[0].PartitionType != PARTITION_ENTRY_UNUSED)
    {
        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
    {
        /* Enumerate and add the first four primary partitions */
        for (i = 0; i < 4; i++)
        {
            AddPartitionToDisk(DiskNumber, DiskEntry, i, FALSE);
        }
 
        /* Enumerate and add the remaining partitions as logical ones */
        for (i = 4; i < DiskEntry->LayoutBuffer->PartitionCount; i += 4)
        {
            AddPartitionToDisk(DiskNumber, DiskEntry, i, TRUE);
        }
    }
 
    ScanForUnpartitionedDiskSpace(DiskEntry);
}

Referenced by CreatePartitionList().

AddLogicalDiskSpace()

static VOID AddLogicalDiskSpace ( _In_ PDISKENTRY  DiskEntry )

static

Definition at line 678 of file partlist.c.

{
    ULONGLONG StartSector;
    ULONGLONG SectorCount;
    PPARTENTRY NewPartEntry;
 
    DPRINT("AddLogicalDiskSpace()\n");
 
    /* Create a partition entry that represents the empty space in the container partition */
 
    StartSector = DiskEntry->ExtendedPartition->StartSector.QuadPart + (ULONGLONG)DiskEntry->SectorAlignment;
    SectorCount = DiskEntry->ExtendedPartition->SectorCount.QuadPart - (ULONGLONG)DiskEntry->SectorAlignment;
 
    NewPartEntry = CreateInsertBlankRegion(DiskEntry,
                                           &DiskEntry->LogicalPartListHead,
                                           StartSector,
                                           SectorCount,
                                           TRUE);
    if (!NewPartEntry)
        DPRINT1("Failed to create a new empty region for full extended partition space!\n");
}

Referenced by InitializePartitionEntry(), and ScanForUnpartitionedDiskSpace().

AddPartitionToDisk()

static VOID AddPartitionToDisk ( IN ULONG  DiskNumber, IN PDISKENTRY  DiskEntry, IN ULONG  PartitionIndex, IN BOOLEAN  LogicalPartition  )

static

Definition at line 841 of file partlist.c.

{
    NTSTATUS Status;
    PPARTITION_INFORMATION PartitionInfo;
    PPARTENTRY PartEntry;
    HANDLE PartitionHandle;
    OBJECT_ATTRIBUTES ObjectAttributes;
    IO_STATUS_BLOCK IoStatusBlock;
    WCHAR PathBuffer[MAX_PATH];
    UNICODE_STRING Name;
    UCHAR LabelBuffer[sizeof(FILE_FS_VOLUME_INFORMATION) + 256 * sizeof(WCHAR)];
    PFILE_FS_VOLUME_INFORMATION LabelInfo = (PFILE_FS_VOLUME_INFORMATION)LabelBuffer;
 
    PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[PartitionIndex];
 
    if (PartitionInfo->PartitionType == PARTITION_ENTRY_UNUSED ||
        ((LogicalPartition != FALSE) && IsContainerPartition(PartitionInfo->PartitionType)))
    {
        return;
    }
 
    PartEntry = RtlAllocateHeap(ProcessHeap,
                                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->OnDiskPartitionNumber = PartitionInfo->PartitionNumber;
    PartEntry->PartitionNumber = PartitionInfo->PartitionNumber;
    PartEntry->PartitionIndex = PartitionIndex;
 
    /* Specify the partition as initially unformatted */
    PartEntry->FormatState = Unformatted;
    PartEntry->FileSystem[0] = L'\0';
 
    /* Initialize the partition volume label */
    RtlZeroMemory(PartEntry->VolumeLabel, sizeof(PartEntry->VolumeLabel));
 
    if (IsContainerPartition(PartEntry->PartitionType))
    {
        PartEntry->FormatState = Unformatted;
 
        if (LogicalPartition == FALSE && DiskEntry->ExtendedPartition == NULL)
            DiskEntry->ExtendedPartition = PartEntry;
    }
    else if (IsRecognizedPartition(PartEntry->PartitionType))
    {
        ASSERT(PartitionInfo->RecognizedPartition);
        ASSERT(PartEntry->IsPartitioned && PartEntry->PartitionNumber != 0);
 
        /* Try to open the volume so as to mount it */
        RtlStringCchPrintfW(PathBuffer, ARRAYSIZE(PathBuffer),
                            L"\\Device\\Harddisk%lu\\Partition%lu",
                            DiskEntry->DiskNumber,
                            PartEntry->PartitionNumber);
        RtlInitUnicodeString(&Name, PathBuffer);
 
        InitializeObjectAttributes(&ObjectAttributes,
                                   &Name,
                                   OBJ_CASE_INSENSITIVE,
                                   NULL,
                                   NULL);
 
        PartitionHandle = NULL;
        Status = NtOpenFile(&PartitionHandle,
                            FILE_READ_DATA | SYNCHRONIZE,
                            &ObjectAttributes,
                            &IoStatusBlock,
                            FILE_SHARE_READ | FILE_SHARE_WRITE,
                            FILE_SYNCHRONOUS_IO_NONALERT);
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("NtOpenFile() failed, Status 0x%08lx\n", Status);
        }
 
        if (PartitionHandle)
        {
            ASSERT(NT_SUCCESS(Status));
 
            /* We don't have a FS, try to guess one */
            Status = InferFileSystem(NULL, PartitionHandle,
                                     PartEntry->FileSystem,
                                     sizeof(PartEntry->FileSystem));
            if (!NT_SUCCESS(Status))
                DPRINT1("InferFileSystem() failed, Status 0x%08lx\n", Status);
        }
        if (*PartEntry->FileSystem)
        {
            ASSERT(PartitionHandle);
 
            /*
             * Handle partition mounted with RawFS: it is
             * either unformatted or has an unknown format.
             */
            if (wcsicmp(PartEntry->FileSystem, L"RAW") == 0)
            {
                /*
                 * True unformatted partitions on NT are created with their
                 * partition type set to either one of the following values,
                 * and are mounted with RawFS. This is done this way since we
                 * are assured to have FAT support, which is the only FS that
                 * uses these partition types. Therefore, having a partition
                 * mounted with RawFS and with these partition types means that
                 * the FAT FS was unable to mount it beforehand and thus the
                 * partition is unformatted.
                 * However, any partition mounted by RawFS that does NOT have
                 * any of these partition types must be considered as having
                 * an unknown format.
                 */
                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)
                {
                    PartEntry->FormatState = Unformatted;
                }
                else
                {
                    /* Close the partition before dismounting */
                    NtClose(PartitionHandle);
                    PartitionHandle = NULL;
                    /*
                     * Dismount the partition since RawFS owns it, and set its
                     * format to unknown (may or may not be actually formatted).
                     */
                    DismountVolume(PartEntry);
                    PartEntry->FormatState = UnknownFormat;
                    PartEntry->FileSystem[0] = L'\0';
                }
            }
            else
            {
                PartEntry->FormatState = Preformatted;
            }
        }
        else
        {
            PartEntry->FormatState = UnknownFormat;
        }
 
        /* Retrieve the partition volume label */
        if (PartitionHandle)
        {
            Status = NtQueryVolumeInformationFile(PartitionHandle,
                                                  &IoStatusBlock,
                                                  &LabelBuffer,
                                                  sizeof(LabelBuffer),
                                                  FileFsVolumeInformation);
            if (NT_SUCCESS(Status))
            {
                /* Copy the (possibly truncated) volume label and NULL-terminate it */
                RtlStringCbCopyNW(PartEntry->VolumeLabel, sizeof(PartEntry->VolumeLabel),
                                  LabelInfo->VolumeLabel, LabelInfo->VolumeLabelLength);
            }
            else
            {
                DPRINT1("NtQueryVolumeInformationFile() failed, Status 0x%08lx\n", Status);
            }
        }
 
        /* Close the partition */
        if (PartitionHandle)
            NtClose(PartitionHandle);
    }
    else
    {
        /* Unknown partition, hence unknown format (may or may not be actually formatted) */
        PartEntry->FormatState = UnknownFormat;
    }
 
    InsertDiskRegion(DiskEntry, PartEntry, LogicalPartition);
}

Referenced by AddDiskToList().

AlignDown()

ULONGLONG AlignDown	(	IN ULONGLONG	Value,
		IN ULONG	Alignment
	)

Definition at line 67 of file partlist.c.

{
    ULONGLONG Temp;
 
    Temp = Value / Alignment;
 
    return Temp * Alignment;
}

Referenced by InitializePartitionEntry(), and ScanForUnpartitionedDiskSpace().

AlignUp()

ULONGLONG AlignUp	(	IN ULONGLONG	Value,
		IN ULONG	Alignment
	)

Definition at line 79 of file partlist.c.

{
    ULONGLONG Temp, Result;
 
    Temp = Value / Alignment;
 
    Result = Temp * Alignment;
    if (Value % Alignment)
        Result += Alignment;
 
    return Result;
}

Referenced by PeFmtCreateSection().

AssignDriveLetters()

static VOID AssignDriveLetters ( IN PPARTLIST  List )

static

Definition at line 138 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PPARTENTRY PartEntry;
    PLIST_ENTRY Entry1;
    PLIST_ENTRY Entry2;
    WCHAR Letter;
 
    Letter = L'C';
 
    /* Assign drive letters to primary partitions */
    for (Entry1 = List->DiskListHead.Flink;
         Entry1 != &List->DiskListHead;
         Entry1 = Entry1->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry1, DISKENTRY, ListEntry);
 
        for (Entry2 = DiskEntry->PrimaryPartListHead.Flink;
             Entry2 != &DiskEntry->PrimaryPartListHead;
             Entry2 = Entry2->Flink)
        {
            PartEntry = CONTAINING_RECORD(Entry2, PARTENTRY, ListEntry);
 
            PartEntry->DriveLetter = 0;
 
            if (PartEntry->IsPartitioned &&
                !IsContainerPartition(PartEntry->PartitionType))
            {
                ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
                if (IsRecognizedPartition(PartEntry->PartitionType) ||
                    PartEntry->SectorCount.QuadPart != 0LL)
                {
                    if (Letter <= L'Z')
                    {
                        PartEntry->DriveLetter = Letter;
                        Letter++;
                    }
                }
            }
        }
    }
 
    /* Assign drive letters to logical drives */
    for (Entry1 = List->DiskListHead.Flink;
         Entry1 != &List->DiskListHead;
         Entry1 = Entry1->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry1, DISKENTRY, ListEntry);
 
        for (Entry2 = DiskEntry->LogicalPartListHead.Flink;
             Entry2 != &DiskEntry->LogicalPartListHead;
             Entry2 = Entry2->Flink)
        {
            PartEntry = CONTAINING_RECORD(Entry2, PARTENTRY, ListEntry);
 
            PartEntry->DriveLetter = 0;
 
            if (PartEntry->IsPartitioned)
            {
                ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
                if (IsRecognizedPartition(PartEntry->PartitionType) ||
                    PartEntry->SectorCount.QuadPart != 0LL)
                {
                    if (Letter <= L'Z')
                    {
                        PartEntry->DriveLetter = Letter;
                        Letter++;
                    }
                }
            }
        }
    }
}

Referenced by CreatePartition(), CreatePartitionList(), and DeletePartition().

CreateInsertBlankRegion()

static PPARTENTRY CreateInsertBlankRegion ( IN PDISKENTRY  DiskEntry, IN OUT PLIST_ENTRY  ListHead, IN ULONGLONG  StartSector, IN ULONGLONG  SectorCount, IN BOOLEAN  LogicalSpace  )

static

Definition at line 640 of file partlist.c.

{
    PPARTENTRY NewPartEntry;
 
    NewPartEntry = RtlAllocateHeap(ProcessHeap,
                                   HEAP_ZERO_MEMORY,
                                   sizeof(PARTENTRY));
    if (NewPartEntry == NULL)
        return NULL;
 
    NewPartEntry->DiskEntry = DiskEntry;
 
    NewPartEntry->StartSector.QuadPart = StartSector;
    NewPartEntry->SectorCount.QuadPart = SectorCount;
 
    NewPartEntry->LogicalPartition = LogicalSpace;
    NewPartEntry->IsPartitioned = FALSE;
    NewPartEntry->PartitionType = PARTITION_ENTRY_UNUSED;
    NewPartEntry->FormatState = Unformatted;
    NewPartEntry->FileSystem[0] = L'\0';
 
    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);
 
    /* Insert the new entry into the list */
    InsertTailList(ListHead, &NewPartEntry->ListEntry);
 
    return NewPartEntry;
}

Referenced by AddLogicalDiskSpace(), InitializePartitionEntry(), and ScanForUnpartitionedDiskSpace().

CreatePartition()

BOOLEAN CreatePartition	(	_In_ PPARTLIST	List,
		_Inout_ PPARTENTRY	PartEntry,
		_In_opt_ ULONGLONG	SizeBytes,
		_In_opt_ ULONG_PTR	PartitionInfo
	)

Definition at line 2844 of file partlist.c.

{
    ERROR_NUMBER Error;
    BOOLEAN isContainer = IsContainerPartition((UCHAR)PartitionInfo);
    PCSTR mainType = "Primary";
 
    if (isContainer)
        mainType = "Extended";
    else if (PartEntry && PartEntry->LogicalPartition)
        mainType = "Logical";
 
    DPRINT1("CreatePartition(%s, %I64u bytes)\n", mainType, SizeBytes);
 
    if (!List || !PartEntry ||
        !PartEntry->DiskEntry || PartEntry->IsPartitioned)
    {
        return FALSE;
    }
 
    if (isContainer)
        Error = ExtendedPartitionCreationChecks(PartEntry);
    else
        Error = PartitionCreationChecks(PartEntry);
    if (Error != NOT_AN_ERROR)
    {
        DPRINT1("PartitionCreationChecks(%s) failed with error %lu\n", mainType, Error);
        return FALSE;
    }
 
    /* Initialize the partition entry, inserting a new blank region if needed */
    if (!InitializePartitionEntry(PartEntry, SizeBytes, PartitionInfo))
        return FALSE;
 
    if (isContainer)
    {
        // FIXME? Possibly to make GetNextUnformattedPartition work (i.e. skip the extended partition container)
        PartEntry->New = FALSE;
        PartEntry->FormatState = Formatted;
    }
 
    UpdateDiskLayout(PartEntry->DiskEntry);
    AssignDriveLetters(List);
 
    return TRUE;
}

Referenced by CreatePartitionPage(), InitSystemPartition(), and SelectPartitionPage().

CreatePartitionList()

PPARTLIST CreatePartitionList

(

VOID

)

Definition at line 1923 of file partlist.c.

{
    PPARTLIST List;
    PDISKENTRY SystemDisk;
    OBJECT_ATTRIBUTES ObjectAttributes;
    SYSTEM_DEVICE_INFORMATION Sdi;
    IO_STATUS_BLOCK Iosb;
    ULONG ReturnSize;
    NTSTATUS Status;
    ULONG DiskNumber;
    HANDLE FileHandle;
    UNICODE_STRING Name;
    WCHAR Buffer[MAX_PATH];
 
    List = (PPARTLIST)RtlAllocateHeap(ProcessHeap,
                                      0,
                                      sizeof(PARTLIST));
    if (List == NULL)
        return NULL;
 
    List->SystemPartition = NULL;
 
    InitializeListHead(&List->DiskListHead);
    InitializeListHead(&List->BiosDiskListHead);
 
    /*
     * Enumerate the disks seen by the BIOS; this will be used later
     * to map drives seen by NTOS with their corresponding BIOS names.
     */
    EnumerateBiosDiskEntries(List);
 
    /* Enumerate disks seen by NTOS */
    Status = NtQuerySystemInformation(SystemDeviceInformation,
                                      &Sdi,
                                      sizeof(Sdi),
                                      &ReturnSize);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtQuerySystemInformation() failed, Status 0x%08lx\n", Status);
        RtlFreeHeap(ProcessHeap, 0, List);
        return NULL;
    }
 
    for (DiskNumber = 0; DiskNumber < Sdi.NumberOfDisks; DiskNumber++)
    {
        RtlStringCchPrintfW(Buffer, ARRAYSIZE(Buffer),
                            L"\\Device\\Harddisk%lu\\Partition0",
                            DiskNumber);
        RtlInitUnicodeString(&Name, Buffer);
 
        InitializeObjectAttributes(&ObjectAttributes,
                                   &Name,
                                   OBJ_CASE_INSENSITIVE,
                                   NULL,
                                   NULL);
 
        Status = NtOpenFile(&FileHandle,
                            FILE_READ_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE,
                            &ObjectAttributes,
                            &Iosb,
                            FILE_SHARE_READ | FILE_SHARE_WRITE,
                            FILE_SYNCHRONOUS_IO_NONALERT);
        if (NT_SUCCESS(Status))
        {
            AddDiskToList(FileHandle, DiskNumber, List);
            NtClose(FileHandle);
        }
    }
 
    UpdateDiskSignatures(List);
    UpdateHwDiskNumbers(List);
    AssignDriveLetters(List);
 
    /*
     * Retrieve the system partition: the active partition on the system
     * disk (the one that will be booted by default by the hardware).
     */
    SystemDisk = GetSystemDisk(List);
    List->SystemPartition = (SystemDisk ? GetActiveDiskPartition(SystemDisk) : NULL);
 
    return List;
}

Referenced by LoadSetupData(), rescan_main(), SelectPartitionPage(), UpgradeRepairPage(), and wmain().

DeletePartition()

BOOLEAN DeletePartition	(	_In_ PPARTLIST	List,
		_In_ PPARTENTRY	PartEntry,
		_Out_opt_ PPARTENTRY *	FreeRegion
	)

Definition at line 3002 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PPARTENTRY PrevPartEntry;
    PPARTENTRY NextPartEntry;
    PPARTENTRY LogicalPartEntry;
    PLIST_ENTRY Entry;
 
    if (!List || !PartEntry ||
        !PartEntry->DiskEntry || !PartEntry->IsPartitioned)
    {
        return FALSE;
    }
 
    ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
    /* Clear the system partition if it is being deleted */
    if (List->SystemPartition == PartEntry)
    {
        ASSERT(List->SystemPartition);
        List->SystemPartition = NULL;
    }
 
    DiskEntry = PartEntry->DiskEntry;
 
    /* Check which type of partition (primary/logical or extended) is being deleted */
    if (DiskEntry->ExtendedPartition == PartEntry)
    {
        /* An extended partition is being deleted: delete all logical partition entries */
        while (!IsListEmpty(&DiskEntry->LogicalPartListHead))
        {
            Entry = RemoveHeadList(&DiskEntry->LogicalPartListHead);
            LogicalPartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
 
            /* Dismount the logical partition */
            DismountVolume(LogicalPartEntry);
 
            /* Delete it */
            RtlFreeHeap(ProcessHeap, 0, LogicalPartEntry);
        }
 
        DiskEntry->ExtendedPartition = NULL;
    }
    else
    {
        /* A primary partition is being deleted: dismount it */
        DismountVolume(PartEntry);
    }
 
    /* Adjust the unpartitioned disk space entries */
 
    /* Get pointer to previous and next unpartitioned entries */
    PrevPartEntry = GetAdjUnpartitionedEntry(PartEntry, FALSE);
    NextPartEntry = GetAdjUnpartitionedEntry(PartEntry, TRUE);
 
    if (PrevPartEntry != NULL && NextPartEntry != NULL)
    {
        /* Merge the previous, current and next unpartitioned entries */
 
        /* Adjust the previous entry length */
        PrevPartEntry->SectorCount.QuadPart += (PartEntry->SectorCount.QuadPart + NextPartEntry->SectorCount.QuadPart);
 
        /* Remove the current and next entries */
        RemoveEntryList(&PartEntry->ListEntry);
        RtlFreeHeap(ProcessHeap, 0, PartEntry);
        RemoveEntryList(&NextPartEntry->ListEntry);
        RtlFreeHeap(ProcessHeap, 0, NextPartEntry);
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = PrevPartEntry;
    }
    else if (PrevPartEntry != NULL && NextPartEntry == NULL)
    {
        /* Merge the current and the previous unpartitioned entries */
 
        /* Adjust the previous entry length */
        PrevPartEntry->SectorCount.QuadPart += PartEntry->SectorCount.QuadPart;
 
        /* Remove the current entry */
        RemoveEntryList(&PartEntry->ListEntry);
        RtlFreeHeap(ProcessHeap, 0, PartEntry);
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = PrevPartEntry;
    }
    else if (PrevPartEntry == NULL && NextPartEntry != NULL)
    {
        /* Merge the current and the next unpartitioned entries */
 
        /* Adjust the next entry offset and length */
        NextPartEntry->StartSector.QuadPart = PartEntry->StartSector.QuadPart;
        NextPartEntry->SectorCount.QuadPart += PartEntry->SectorCount.QuadPart;
 
        /* Remove the current entry */
        RemoveEntryList(&PartEntry->ListEntry);
        RtlFreeHeap(ProcessHeap, 0, PartEntry);
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = NextPartEntry;
    }
    else
    {
        /* Nothing to merge but change the current entry */
        PartEntry->IsPartitioned = FALSE;
        PartEntry->OnDiskPartitionNumber = 0;
        PartEntry->PartitionNumber = 0;
        // PartEntry->PartitionIndex = 0;
        PartEntry->BootIndicator = FALSE;
        PartEntry->PartitionType = PARTITION_ENTRY_UNUSED;
        PartEntry->FormatState = Unformatted;
        PartEntry->FileSystem[0] = L'\0';
        PartEntry->DriveLetter = 0;
        RtlZeroMemory(PartEntry->VolumeLabel, sizeof(PartEntry->VolumeLabel));
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = PartEntry;
    }
 
    UpdateDiskLayout(DiskEntry);
    AssignDriveLetters(List);
 
    return TRUE;
}

Referenced by DeletePartitionPage().

DestroyPartitionList()

VOID DestroyPartitionList

(

IN PPARTLIST

List

)

Definition at line 2007 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PBIOSDISKENTRY BiosDiskEntry;
    PPARTENTRY PartEntry;
    PLIST_ENTRY Entry;
 
    /* Release disk and partition info */
    while (!IsListEmpty(&List->DiskListHead))
    {
        Entry = RemoveHeadList(&List->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(ProcessHeap, 0, PartEntry);
        }
 
        /* Release logical partition list */
        while (!IsListEmpty(&DiskEntry->LogicalPartListHead))
        {
            Entry = RemoveHeadList(&DiskEntry->LogicalPartListHead);
            PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
 
            RtlFreeHeap(ProcessHeap, 0, PartEntry);
        }
 
        /* Release layout buffer */
        if (DiskEntry->LayoutBuffer != NULL)
            RtlFreeHeap(ProcessHeap, 0, DiskEntry->LayoutBuffer);
 
        /* Release disk entry */
        RtlFreeHeap(ProcessHeap, 0, DiskEntry);
    }
 
    /* Release the bios disk info */
    while (!IsListEmpty(&List->BiosDiskListHead))
    {
        Entry = RemoveHeadList(&List->BiosDiskListHead);
        BiosDiskEntry = CONTAINING_RECORD(Entry, BIOSDISKENTRY, ListEntry);
 
        RtlFreeHeap(ProcessHeap, 0, BiosDiskEntry);
    }
 
    /* Release list head */
    RtlFreeHeap(ProcessHeap, 0, List);
}

Referenced by QuitPage(), rescan_main(), SelectPartitionPage(), and wmain().

DiskConfigurationDataQueryRoutine()

static NTSTATUS NTAPI DiskConfigurationDataQueryRoutine ( PWSTR  ValueName, ULONG  ValueType, PVOID  ValueData, ULONG  ValueLength, PVOID  Context, PVOID  EntryContext  )

static

Definition at line 247 of file partlist.c.

{
    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;
}

Referenced by EnumerateBiosDiskEntries().

DiskIdentifierQueryRoutine()

static NTSTATUS NTAPI DiskIdentifierQueryRoutine ( PWSTR  ValueName, ULONG  ValueType, PVOID  ValueData, ULONG  ValueLength, PVOID  Context, PVOID  EntryContext  )

static

Definition at line 217 of file partlist.c.

{
    PBIOSDISKENTRY BiosDiskEntry = (PBIOSDISKENTRY)Context;
    UNICODE_STRING NameU;
 
    if (ValueType == REG_SZ &&
        ValueLength == 20 * sizeof(WCHAR) &&
        ((PWCHAR)ValueData)[8] == L'-')
    {
        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;
}

Referenced by EnumerateBiosDiskEntries().

DismountVolume()

NTSTATUS DismountVolume

(

IN PPARTENTRY

PartEntry

)

Definition at line 2895 of file partlist.c.

{
    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 */
    RtlStringCchPrintfW(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;
}

Referenced by AddPartitionToDisk(), clean_main(), and DeletePartition().

EnumerateBiosDiskEntries()

static VOID EnumerateBiosDiskEntries ( IN PPARTLIST  PartList )

static

Definition at line 337 of file partlist.c.

{
    RTL_QUERY_REGISTRY_TABLE QueryTable[3];
    WCHAR Name[120];
    ULONG AdapterCount;
    ULONG ControllerCount;
    ULONG DiskCount;
    NTSTATUS Status;
    PCM_INT13_DRIVE_PARAMETER Int13Drives;
    PBIOSDISKENTRY BiosDiskEntry;
 
#define ROOT_NAME   L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter"
 
    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;
    }
 
    for (AdapterCount = 0; ; ++AdapterCount)
    {
        RtlStringCchPrintfW(Name, ARRAYSIZE(Name),
                            L"%s\\%lu",
                            ROOT_NAME, AdapterCount);
        Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
                                        Name,
                                        &QueryTable[2],
                                        NULL,
                                        NULL);
        if (!NT_SUCCESS(Status))
        {
            break;
        }
 
        RtlStringCchPrintfW(Name, ARRAYSIZE(Name),
                            L"%s\\%lu\\DiskController",
                            ROOT_NAME, AdapterCount);
        Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
                                        Name,
                                        &QueryTable[2],
                                        NULL,
                                        NULL);
        if (NT_SUCCESS(Status))
        {
            for (ControllerCount = 0; ; ++ControllerCount)
            {
                RtlStringCchPrintfW(Name, ARRAYSIZE(Name),
                                    L"%s\\%lu\\DiskController\\%lu",
                                    ROOT_NAME, AdapterCount, ControllerCount);
                Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
                                                Name,
                                                &QueryTable[2],
                                                NULL,
                                                NULL);
                if (!NT_SUCCESS(Status))
                {
                    RtlFreeHeap(ProcessHeap, 0, Int13Drives);
                    return;
                }
 
                RtlStringCchPrintfW(Name, ARRAYSIZE(Name),
                                    L"%s\\%lu\\DiskController\\%lu\\DiskPeripheral",
                                    ROOT_NAME, AdapterCount, ControllerCount);
                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;
 
                    for (DiskCount = 0; ; ++DiskCount)
                    {
                        BiosDiskEntry = (BIOSDISKENTRY*)RtlAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, sizeof(BIOSDISKENTRY));
                        if (BiosDiskEntry == NULL)
                        {
                            RtlFreeHeap(ProcessHeap, 0, Int13Drives);
                            return;
                        }
 
                        RtlStringCchPrintfW(Name, ARRAYSIZE(Name),
                                            L"%s\\%lu\\DiskController\\%lu\\DiskPeripheral\\%lu",
                                            ROOT_NAME, AdapterCount, ControllerCount, DiskCount);
                        Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
                                                        Name,
                                                        QueryTable,
                                                        (PVOID)BiosDiskEntry,
                                                        NULL);
                        if (!NT_SUCCESS(Status))
                        {
                            RtlFreeHeap(ProcessHeap, 0, BiosDiskEntry);
                            RtlFreeHeap(ProcessHeap, 0, Int13Drives);
                            return;
                        }
 
                        BiosDiskEntry->AdapterNumber = 0; // And NOT "AdapterCount" as it needs to be hardcoded for BIOS!
                        BiosDiskEntry->ControllerNumber = ControllerCount;
                        BiosDiskEntry->DiskNumber = DiskCount;
                        BiosDiskEntry->DiskEntry = NULL;
 
                        if (DiskCount < Int13Drives[0].NumberDrives)
                        {
                            BiosDiskEntry->Int13DiskData = Int13Drives[DiskCount];
                        }
                        else
                        {
                            DPRINT1("Didn't find Int13 drive data for disk %u\n", DiskCount);
                        }
 
                        InsertTailList(&PartList->BiosDiskListHead, &BiosDiskEntry->ListEntry);
 
                        DPRINT("--->\n");
                        DPRINT("AdapterNumber:     %lu\n", BiosDiskEntry->AdapterNumber);
                        DPRINT("ControllerNumber:  %lu\n", BiosDiskEntry->ControllerNumber);
                        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);
                        DPRINT("<---\n");
                    }
                }
            }
        }
    }
 
    RtlFreeHeap(ProcessHeap, 0, Int13Drives);
 
#undef ROOT_NAME
}

Referenced by CreatePartitionList().

ExtendedPartitionCreationChecks()

ERROR_NUMBER ExtendedPartitionCreationChecks

(

_In_ PPARTENTRY

PartEntry

)

Definition at line 2806 of file partlist.c.

{
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n");
        return ERROR_WARN_PARTITION;
    }
 
    /* Fail if the partition is already in use */
    if (PartEntry->IsPartitioned)
        return ERROR_NEW_PARTITION;
 
    /* Cannot create an extended partition within logical partition space */
    if (PartEntry->LogicalPartition)
        return ERROR_ONLY_ONE_EXTENDED;
 
    /* Only one primary partition is allowed on super-floppy */
    if (IsSuperFloppy(DiskEntry))
        return ERROR_PARTITION_TABLE_FULL;
 
    /* Fail if there are already 4 primary partitions in the list */
    if (GetPrimaryPartitionCount(DiskEntry) >= 4)
        return ERROR_PARTITION_TABLE_FULL;
 
    /* Fail if there is another extended partition in the list */
    if (DiskEntry->ExtendedPartition)
        return ERROR_ONLY_ONE_EXTENDED;
 
    return ERROR_SUCCESS;
}

Referenced by CreatePartition(), and SelectPartitionPage().

FindSupportedSystemPartition()

PPARTENTRY FindSupportedSystemPartition	(	IN PPARTLIST	List,
		IN BOOLEAN	ForceSelect,
		IN PDISKENTRY AlternativeDisk	OPTIONAL,
		IN PPARTENTRY AlternativePart	OPTIONAL
	)

Definition at line 3215 of file partlist.c.

{
    PLIST_ENTRY ListEntry;
    PDISKENTRY DiskEntry;
    PPARTENTRY PartEntry;
    PPARTENTRY ActivePartition;
    PPARTENTRY CandidatePartition = NULL;
 
    /* Check for empty disk list */
    if (IsListEmpty(&List->DiskListHead))
    {
        /* No system partition! */
        ASSERT(List->SystemPartition == NULL);
        goto NoSystemPartition;
    }
 
    /* Adjust the optional alternative disk if needed */
    if (!AlternativeDisk && AlternativePart)
        AlternativeDisk = AlternativePart->DiskEntry;
 
    /* Ensure that the alternative partition is on the alternative disk */
    if (AlternativePart)
        ASSERT(AlternativeDisk && (AlternativePart->DiskEntry == AlternativeDisk));
 
    /* Ensure that the alternative disk is in the list */
    if (AlternativeDisk)
        ASSERT(AlternativeDisk->PartList == List);
 
    /* Start fresh */
    CandidatePartition = NULL;
 
//
// Step 1 : Check the system disk.
//
 
    /*
     * First, check whether the system disk, i.e. the one that will be booted
     * by default by the hardware, contains an active partition. If so this
     * should be our system partition.
     */
    DiskEntry = GetSystemDisk(List);
    if (!DiskEntry)
    {
        /* No system disk found, directly go check the alternative disk */
        goto UseAlternativeDisk;
    }
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("System disk -- GPT-partitioned disk detected, not currently supported by SETUP!\n");
        goto UseAlternativeDisk;
    }
 
    /* If we have a system partition (in the system disk), validate it */
    ActivePartition = List->SystemPartition;
    if (ActivePartition && IsSupportedActivePartition(ActivePartition))
    {
        CandidatePartition = ActivePartition;
 
        DPRINT1("Use the current system partition %lu in disk %lu, drive letter %C\n",
                CandidatePartition->PartitionNumber,
                CandidatePartition->DiskEntry->DiskNumber,
                (CandidatePartition->DriveLetter == 0) ? L'-' : CandidatePartition->DriveLetter);
 
        /* Return the candidate system partition */
        return CandidatePartition;
    }
 
    /* If the system disk is not the optional alternative disk, perform the minimal checks */
    if (DiskEntry != AlternativeDisk)
    {
        /*
         * No active partition has been recognized. Enumerate all the (primary)
         * partitions in the system disk, excluding the possible current active
         * partition, to find a new candidate.
         */
        for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
             ListEntry != &DiskEntry->PrimaryPartListHead;
             ListEntry = ListEntry->Flink)
        {
            /* Retrieve the partition */
            PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
 
            /* Skip the current active partition */
            if (PartEntry == ActivePartition)
                continue;
 
            /* Check if the partition is partitioned and used */
            if (PartEntry->IsPartitioned &&
                !IsContainerPartition(PartEntry->PartitionType))
            {
                ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
                /* If we get a candidate active partition in the disk, validate it */
                if (IsSupportedActivePartition(PartEntry))
                {
                    CandidatePartition = PartEntry;
                    goto UseAlternativePartition;
                }
            }
 
#if 0
            /* Check if the partition is partitioned and used */
            if (!PartEntry->IsPartitioned)
            {
                ASSERT(PartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
 
                // TODO: Check for minimal size!!
                CandidatePartition = PartEntry;
                goto UseAlternativePartition;
            }
#endif
        }
 
        /*
         * Still nothing, look whether there is some free space that we can use
         * for the new system partition. We must be sure that the total number
         * of partition is less than the maximum allowed, and that the minimal
         * size is fine.
         */
//
// TODO: Fix the handling of system partition being created in unpartitioned space!!
// --> When to partition it? etc...
//
        if (GetPrimaryPartitionCount(DiskEntry) < 4)
        {
            for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
                 ListEntry != &DiskEntry->PrimaryPartListHead;
                 ListEntry = ListEntry->Flink)
            {
                /* Retrieve the partition */
                PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
 
                /* Skip the current active partition */
                if (PartEntry == ActivePartition)
                    continue;
 
                /* Check for unpartitioned space */
                if (!PartEntry->IsPartitioned)
                {
                    ASSERT(PartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
 
                    // TODO: Check for minimal size!!
                    CandidatePartition = PartEntry;
                    goto UseAlternativePartition;
                }
            }
        }
    }
 
 
//
// Step 2 : No active partition found: Check the alternative disk if specified.
//
 
UseAlternativeDisk:
    if (!AlternativeDisk || (!ForceSelect && (DiskEntry != AlternativeDisk)))
        goto NoSystemPartition;
 
    if (AlternativeDisk->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("Alternative disk -- GPT-partitioned disk detected, not currently supported by SETUP!\n");
        goto NoSystemPartition;
    }
 
    if (DiskEntry != AlternativeDisk)
    {
        /* Choose the alternative disk */
        DiskEntry = AlternativeDisk;
 
        /* If we get a candidate active partition, validate it */
        ActivePartition = GetActiveDiskPartition(DiskEntry);
        if (ActivePartition && IsSupportedActivePartition(ActivePartition))
        {
            CandidatePartition = ActivePartition;
            goto UseAlternativePartition;
        }
    }
 
    /* We now may have an unsupported active partition, or none */
 
/***
 *** TODO: Improve the selection:
 *** - If we want a really separate system partition from the partition where
 ***   we install, do something similar to what's done below in the code.
 *** - Otherwise if we allow for the system partition to be also the partition
 ***   where we install, just directly fall down to using AlternativePart.
 ***/
 
    /* Retrieve the first partition of the disk */
    PartEntry = CONTAINING_RECORD(DiskEntry->PrimaryPartListHead.Flink,
                                  PARTENTRY, ListEntry);
    ASSERT(DiskEntry == PartEntry->DiskEntry);
 
    CandidatePartition = PartEntry;
 
    //
    // See: https://svn.reactos.org/svn/reactos/trunk/reactos/base/setup/usetup/partlist.c?r1=63355&r2=63354&pathrev=63355#l2318
    //
 
    /* Check if the disk is new and if so, use its first partition as the active system partition */
    if (DiskEntry->NewDisk)
    {
        // !IsContainerPartition(PartEntry->PartitionType);
        if (!CandidatePartition->IsPartitioned || !CandidatePartition->BootIndicator) /* CandidatePartition != ActivePartition */
        {
            ASSERT(DiskEntry == CandidatePartition->DiskEntry);
 
            DPRINT1("Use new first active system partition %lu in disk %lu, drive letter %C\n",
                    CandidatePartition->PartitionNumber,
                    CandidatePartition->DiskEntry->DiskNumber,
                    (CandidatePartition->DriveLetter == 0) ? L'-' : CandidatePartition->DriveLetter);
 
            /* Return the candidate system partition */
            return CandidatePartition;
        }
 
        // FIXME: What to do??
        DPRINT1("NewDisk TRUE but first partition is used?\n");
    }
 
    /*
     * The disk is not new, check if any partition is initialized;
     * if not, the first one becomes the system partition.
     */
    for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
         ListEntry != &DiskEntry->PrimaryPartListHead;
         ListEntry = ListEntry->Flink)
    {
        /* Retrieve the partition */
        PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
 
        /* Check if the partition is partitioned and is used */
        // !IsContainerPartition(PartEntry->PartitionType);
        if (/* PartEntry->IsPartitioned && */
            PartEntry->PartitionType != PARTITION_ENTRY_UNUSED || PartEntry->BootIndicator)
        {
            break;
        }
    }
    if (ListEntry == &DiskEntry->PrimaryPartListHead)
    {
        /*
         * OK we haven't encountered any used and active partition,
         * so use the first one as the system partition.
         */
        ASSERT(DiskEntry == CandidatePartition->DiskEntry);
 
        DPRINT1("Use first active system partition %lu in disk %lu, drive letter %C\n",
                CandidatePartition->PartitionNumber,
                CandidatePartition->DiskEntry->DiskNumber,
                (CandidatePartition->DriveLetter == 0) ? L'-' : CandidatePartition->DriveLetter);
 
        /* Return the candidate system partition */
        return CandidatePartition;
    }
 
    /*
     * The disk is not new, we did not find any actual active partition,
     * or the one we found was not supported, or any possible other candidate
     * is not supported. We then use the alternative partition if specified.
     */
    if (AlternativePart)
    {
        DPRINT1("No valid or supported system partition has been found, use the alternative partition!\n");
        CandidatePartition = AlternativePart;
        goto UseAlternativePartition;
    }
    else
    {
NoSystemPartition:
        DPRINT1("No valid or supported system partition has been found on this system!\n");
        return NULL;
    }
 
UseAlternativePartition:
    /*
     * We are here because we did not find any (active) candidate system
     * partition that we know how to support. What we are going to do is
     * to change the existing system partition and use the alternative partition
     * (e.g. on which we install ReactOS) as the new system partition.
     * Then we will need to add in FreeLdr's boot menu an entry for booting
     * from the original system partition.
     */
    ASSERT(CandidatePartition);
 
    DPRINT1("Use alternative active system partition %lu in disk %lu, drive letter %C\n",
            CandidatePartition->PartitionNumber,
            CandidatePartition->DiskEntry->DiskNumber,
            (CandidatePartition->DriveLetter == 0) ? L'-' : CandidatePartition->DriveLetter);
 
    /* Return the candidate system partition */
    return CandidatePartition;
}

Referenced by InitSystemPartition().

GetActiveDiskPartition()

static PPARTENTRY GetActiveDiskPartition ( IN PDISKENTRY  DiskEntry )

static

Definition at line 1867 of file partlist.c.

{
    PLIST_ENTRY ListEntry;
    PPARTENTRY PartEntry;
    PPARTENTRY ActivePartition = NULL;
 
    /* Check for empty disk list */
    // ASSERT(DiskEntry);
    if (!DiskEntry)
        return NULL;
 
    /* Check for empty partition list */
    if (IsListEmpty(&DiskEntry->PrimaryPartListHead))
        return NULL;
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n");
        return NULL;
    }
 
    /* Scan all (primary) partitions to find the active disk partition */
    for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
         ListEntry != &DiskEntry->PrimaryPartListHead;
         ListEntry = ListEntry->Flink)
    {
        /* Retrieve the partition */
        PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
        if (IsPartitionActive(PartEntry))
        {
            /* Yes, we've found it */
            ASSERT(DiskEntry == PartEntry->DiskEntry);
            ASSERT(PartEntry->IsPartitioned);
 
            ActivePartition = PartEntry;
 
            DPRINT1("Found active system partition %lu in disk %lu, drive letter %C\n",
                    PartEntry->PartitionNumber, DiskEntry->DiskNumber,
                    (PartEntry->DriveLetter == 0) ? L'-' : PartEntry->DriveLetter);
            break;
        }
    }
 
    /* Check if the disk is new and if so, use its first partition as the active system partition */
    if (DiskEntry->NewDisk && ActivePartition != NULL)
    {
        // FIXME: What to do??
        DPRINT1("NewDisk TRUE but already existing active partition?\n");
    }
 
    /* Return the active partition found (or none) */
    return ActivePartition;
}

Referenced by CreatePartitionList(), FindSupportedSystemPartition(), and SetActivePartition().

GetAdjUnpartitionedEntry()

static PPARTENTRY GetAdjUnpartitionedEntry ( _In_ PPARTENTRY  PartEntry, _In_ BOOLEAN  Direction  )

static

Retrieves, if any, the unpartitioned disk region that is adjacent (next or previous) to the specified partition.

Parameters

[in]	PartEntry	Partition from where to find the adjacent unpartitioned region.
[in]	Direction	TRUE or FALSE to search the next or previous region, respectively.

Returns

The adjacent unpartitioned region, if it exists, or NULL.

Definition at line 2725 of file partlist.c.

{
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
    PLIST_ENTRY ListHead, AdjEntry;
 
    /* In case of MBR disks only, check the logical partitions if necessary */
    if ((DiskEntry->DiskStyle == PARTITION_STYLE_MBR) &&
        PartEntry->LogicalPartition)
    {
        ListHead = &DiskEntry->LogicalPartListHead;
    }
    else
    {
        ListHead = &DiskEntry->PrimaryPartListHead;
    }
 
    if (Direction)
        AdjEntry = PartEntry->ListEntry.Flink; // Next region.
    else
        AdjEntry = PartEntry->ListEntry.Blink; // Previous region.
 
    if (AdjEntry != ListHead)
    {
        PartEntry = CONTAINING_RECORD(AdjEntry, PARTENTRY, ListEntry);
        if (!PartEntry->IsPartitioned)
        {
            ASSERT(PartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
            return PartEntry;
        }
    }
    return NULL;
}

Referenced by DeletePartition().

GetDiskByBiosNumber()

PDISKENTRY GetDiskByBiosNumber	(	_In_ PPARTLIST	List,
		_In_ ULONG	HwDiskNumber
	)

Definition at line 2064 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PLIST_ENTRY Entry;
 
    /* Loop over the disks and find the correct one */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->HwDiskNumber == HwDiskNumber)
            return DiskEntry; /* Disk found, return it */
    }
 
    /* Disk not found, stop there */
    return NULL;
}

GetDiskByNumber()

PDISKENTRY GetDiskByNumber	(	_In_ PPARTLIST	List,
		_In_ ULONG	DiskNumber
	)

Definition at line 2087 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PLIST_ENTRY Entry;
 
    /* Loop over the disks and find the correct one */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->DiskNumber == DiskNumber)
            return DiskEntry; /* Disk found, return it */
    }
 
    /* Disk not found, stop there */
    return NULL;
}

Referenced by SelectPartition().

GetDiskBySCSI()

PDISKENTRY GetDiskBySCSI	(	_In_ PPARTLIST	List,
		_In_ USHORT	Port,
		_In_ USHORT	Bus,
		_In_ USHORT	Id
	)

Definition at line 2110 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PLIST_ENTRY Entry;
 
    /* Loop over the disks and find the correct one */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->Port == Port &&
            DiskEntry->Bus  == Bus  &&
            DiskEntry->Id   == Id)
        {
            /* Disk found, return it */
            return DiskEntry;
        }
    }
 
    /* Disk not found, stop there */
    return NULL;
}

Referenced by ResolveArcNameManually().

GetDiskBySignature()

PDISKENTRY GetDiskBySignature	(	_In_ PPARTLIST	List,
		_In_ ULONG	Signature
	)

Definition at line 2140 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PLIST_ENTRY Entry;
 
    /* Loop over the disks and find the correct one */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->LayoutBuffer->Signature == Signature)
            return DiskEntry; /* Disk found, return it */
    }
 
    /* Disk not found, stop there */
    return NULL;
}

Referenced by ResolveArcNameManually().

GetDriverName()

static VOID GetDriverName ( IN PDISKENTRY  DiskEntry )

static

Definition at line 105 of file partlist.c.

{
    RTL_QUERY_REGISTRY_TABLE QueryTable[2];
    WCHAR KeyName[32];
    NTSTATUS Status;
 
    RtlInitUnicodeString(&DiskEntry->DriverName, NULL);
 
    RtlStringCchPrintfW(KeyName, ARRAYSIZE(KeyName),
                        L"\\Scsi\\Scsi Port %hu",
                        DiskEntry->Port);
 
    RtlZeroMemory(&QueryTable, sizeof(QueryTable));
 
    QueryTable[0].Name = L"Driver";
    QueryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
    QueryTable[0].EntryContext = &DiskEntry->DriverName;
 
    /* This will allocate DiskEntry->DriverName if needed */
    Status = RtlQueryRegistryValues(RTL_REGISTRY_DEVICEMAP,
                                    KeyName,
                                    QueryTable,
                                    NULL,
                                    NULL);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("RtlQueryRegistryValues() failed (Status %lx)\n", Status);
    }
}

Referenced by AddDiskToList().

GetNextPartition()

PPARTENTRY GetNextPartition	(	IN PPARTLIST	List,
		IN PPARTENTRY CurrentPart	OPTIONAL
	)

Definition at line 2229 of file partlist.c.

{
    PLIST_ENTRY DiskListEntry;
    PLIST_ENTRY PartListEntry;
    PDISKENTRY CurrentDisk;
 
    /* Fail if no disks are available */
    if (IsListEmpty(&List->DiskListHead))
        return NULL;
 
    /* Check for the next usable entry on the current partition's disk */
    if (CurrentPart != NULL)
    {
        CurrentDisk = CurrentPart->DiskEntry;
 
        if (CurrentPart->LogicalPartition)
        {
            /* Logical partition */
 
            PartListEntry = CurrentPart->ListEntry.Flink;
            if (PartListEntry != &CurrentDisk->LogicalPartListHead)
            {
                /* Next logical partition */
                CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                return CurrentPart;
            }
            else
            {
                PartListEntry = CurrentDisk->ExtendedPartition->ListEntry.Flink;
                if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
                {
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                    return CurrentPart;
                }
            }
        }
        else
        {
            /* Primary or extended partition */
 
            if (CurrentPart->IsPartitioned &&
                IsContainerPartition(CurrentPart->PartitionType))
            {
                /* First logical partition */
                PartListEntry = CurrentDisk->LogicalPartListHead.Flink;
                if (PartListEntry != &CurrentDisk->LogicalPartListHead)
                {
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                    return CurrentPart;
                }
            }
            else
            {
                /* Next primary partition */
                PartListEntry = CurrentPart->ListEntry.Flink;
                if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
                {
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                    return CurrentPart;
                }
            }
        }
    }
 
    /* Search for the first partition entry on the next disk */
    for (DiskListEntry = (CurrentPart ? CurrentDisk->ListEntry.Flink
                                      : List->DiskListHead.Flink);
         DiskListEntry != &List->DiskListHead;
         DiskListEntry = DiskListEntry->Flink)
    {
        CurrentDisk = CONTAINING_RECORD(DiskListEntry, DISKENTRY, ListEntry);
 
        if (CurrentDisk->DiskStyle == PARTITION_STYLE_GPT)
        {
            DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
            continue;
        }
 
        PartListEntry = CurrentDisk->PrimaryPartListHead.Flink;
        if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
        {
            CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
            return CurrentPart;
        }
    }
 
    return NULL;
}

Referenced by ScrollUpDownPartitionList().

GetPartition()

PPARTENTRY GetPartition	(	_In_ PDISKENTRY	DiskEntry,
		_In_ ULONG	PartitionNumber
	)

Definition at line 2163 of file partlist.c.

{
    PPARTENTRY PartEntry;
    PLIST_ENTRY Entry;
 
    /* Forbid whole-disk or extended container partition access */
    if (PartitionNumber == 0)
        return NULL;
 
    /* Loop over the primary partitions first... */
    for (Entry = DiskEntry->PrimaryPartListHead.Flink;
         Entry != &DiskEntry->PrimaryPartListHead;
         Entry = Entry->Flink)
    {
        PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
 
        if (PartEntry->PartitionNumber == PartitionNumber)
            return PartEntry; /* Partition found, return it */
    }
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
        return NULL;
 
    /* ... then over the logical partitions if needed */
    for (Entry = DiskEntry->LogicalPartListHead.Flink;
         Entry != &DiskEntry->LogicalPartListHead;
         Entry = Entry->Flink)
    {
        PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
 
        if (PartEntry->PartitionNumber == PartitionNumber)
            return PartEntry; /* Partition found, return it */
    }
 
    /* The partition was not found on the disk, stop there */
    return NULL;
}

Referenced by ResolveArcNameManually(), and SelectPartition().

GetPartitionCount()

static ULONG GetPartitionCount ( _In_ PLIST_ENTRY  PartListHead )

static

Counts the number of partitioned disk regions in a given partition list.

Definition at line 2442 of file partlist.c.

{
    PLIST_ENTRY Entry;
    PPARTENTRY PartEntry;
    ULONG Count = 0;
 
    for (Entry = PartListHead->Flink;
         Entry != PartListHead;
         Entry = Entry->Flink)
    {
        PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
        if (PartEntry->IsPartitioned)
            ++Count;
    }
 
    return Count;
}

GetPrevPartition()

PPARTENTRY GetPrevPartition	(	IN PPARTLIST	List,
		IN PPARTENTRY CurrentPart	OPTIONAL
	)

Definition at line 2321 of file partlist.c.

{
    PLIST_ENTRY DiskListEntry;
    PLIST_ENTRY PartListEntry;
    PDISKENTRY CurrentDisk;
 
    /* Fail if no disks are available */
    if (IsListEmpty(&List->DiskListHead))
        return NULL;
 
    /* Check for the previous usable entry on the current partition's disk */
    if (CurrentPart != NULL)
    {
        CurrentDisk = CurrentPart->DiskEntry;
 
        if (CurrentPart->LogicalPartition)
        {
            /* Logical partition */
 
            PartListEntry = CurrentPart->ListEntry.Blink;
            if (PartListEntry != &CurrentDisk->LogicalPartListHead)
            {
                /* Previous logical partition */
                CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
            }
            else
            {
                /* Extended partition */
                CurrentPart = CurrentDisk->ExtendedPartition;
            }
            return CurrentPart;
        }
        else
        {
            /* Primary or extended partition */
 
            PartListEntry = CurrentPart->ListEntry.Blink;
            if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
            {
                CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
 
                if (CurrentPart->IsPartitioned &&
                    IsContainerPartition(CurrentPart->PartitionType))
                {
                    PartListEntry = CurrentDisk->LogicalPartListHead.Blink;
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                }
 
                return CurrentPart;
            }
        }
    }
 
    /* Search for the last partition entry on the previous disk */
    for (DiskListEntry = (CurrentPart ? CurrentDisk->ListEntry.Blink
                                      : List->DiskListHead.Blink);
         DiskListEntry != &List->DiskListHead;
         DiskListEntry = DiskListEntry->Blink)
    {
        CurrentDisk = CONTAINING_RECORD(DiskListEntry, DISKENTRY, ListEntry);
 
        if (CurrentDisk->DiskStyle == PARTITION_STYLE_GPT)
        {
            DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
            continue;
        }
 
        PartListEntry = CurrentDisk->PrimaryPartListHead.Blink;
        if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
        {
            CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
 
            if (CurrentPart->IsPartitioned &&
                IsContainerPartition(CurrentPart->PartitionType))
            {
                PartListEntry = CurrentDisk->LogicalPartListHead.Blink;
                if (PartListEntry != &CurrentDisk->LogicalPartListHead)
                {
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                    return CurrentPart;
                }
            }
            else
            {
                return CurrentPart;
            }
        }
    }
 
    return NULL;
}

Referenced by ScrollUpDownPartitionList().

GetSystemDisk()

static PDISKENTRY GetSystemDisk ( IN PPARTLIST  List )

static

Definition at line 1794 of file partlist.c.

{
    PLIST_ENTRY Entry;
    PDISKENTRY DiskEntry;
 
    /* Check for empty disk list */
    if (IsListEmpty(&List->DiskListHead))
        return NULL;
 
    /*
     * If we already have a system partition, the system disk
     * is the one on which the system partition resides.
     */
    if (List->SystemPartition)
        return List->SystemPartition->DiskEntry;
 
    /* Loop over the disks and find the correct one */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        /* The disk must be a fixed disk and be found by the firmware */
        if (DiskEntry->MediaType == FixedMedia && DiskEntry->BiosFound)
        {
            break;
        }
    }
    if (Entry == &List->DiskListHead)
    {
        /* We haven't encountered any suitable disk */
        return NULL;
    }
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("System disk -- GPT-partitioned disk detected, not currently supported by SETUP!\n");
    }
 
    return DiskEntry;
}

Referenced by CreatePartitionList(), FindSupportedSystemPartition(), and SetActivePartition().

InitializePartitionEntry()

static BOOLEAN InitializePartitionEntry ( _Inout_ PPARTENTRY  PartEntry, _In_opt_ ULONGLONG  SizeBytes, _In_opt_ ULONG_PTR  PartitionInfo  )

static

Definition at line 708 of file partlist.c.

{
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
    ULONGLONG SectorCount;
    BOOLEAN isContainer = IsContainerPartition((UCHAR)PartitionInfo);
 
    DPRINT1("Current entry sector count: %I64u\n", PartEntry->SectorCount.QuadPart);
 
    /* The entry must not be already partitioned and not be void */
    ASSERT(!PartEntry->IsPartitioned);
    ASSERT(PartEntry->SectorCount.QuadPart);
 
    /* Either we create a primary/logical partition, or we create an
     * extended partition but the entry must not be logical space */
    ASSERT(!isContainer || !PartEntry->LogicalPartition);
 
    /* Convert the size in bytes to sector count. SizeBytes being
     * zero means the caller wants to use all the empty space. */
    if ((SizeBytes == 0) || (SizeBytes == GetPartEntrySizeInBytes(PartEntry)))
    {
        /* Use all of the unpartitioned disk space */
        SectorCount = PartEntry->SectorCount.QuadPart;
    }
    else
    {
        SectorCount = SizeBytes / DiskEntry->BytesPerSector;
        if (SectorCount == 0)
        {
            /* SizeBytes was certainly less than the minimal size, so fail */
            DPRINT1("Partition size %I64u too small\n", SizeBytes);
            return FALSE;
        }
    }
    DPRINT1("    New sector count: %I64u\n", SectorCount);
 
    /* Fail if we request more sectors than what the entry actually contains */
    if (SectorCount > PartEntry->SectorCount.QuadPart)
        return FALSE;
 
    if ((SectorCount == 0) ||
        (AlignDown(PartEntry->StartSector.QuadPart + SectorCount, DiskEntry->SectorAlignment) -
                   PartEntry->StartSector.QuadPart == PartEntry->SectorCount.QuadPart))
    {
        /* Reuse the whole current entry */
    }
    else
    {
        ULONGLONG StartSector;
        ULONGLONG SectorCount2;
        PPARTENTRY NewPartEntry;
 
        /* Create a partition entry that represents the remaining space
         * after the partition to be initialized */
 
        StartSector = AlignDown(PartEntry->StartSector.QuadPart + SectorCount, DiskEntry->SectorAlignment);
        SectorCount2 = PartEntry->StartSector.QuadPart + PartEntry->SectorCount.QuadPart - StartSector;
 
        NewPartEntry = CreateInsertBlankRegion(DiskEntry,
                                               PartEntry->ListEntry.Flink,
                                               StartSector,
                                               SectorCount2,
                                               PartEntry->LogicalPartition);
        if (!NewPartEntry)
        {
            DPRINT1("Failed to create a new empty region for disk space!\n");
            return FALSE;
        }
 
        /* Resize down the partition entry; its StartSector remains the same */
        PartEntry->SectorCount.QuadPart = StartSector - PartEntry->StartSector.QuadPart;
    }
 
    /* Convert the partition entry to 'New (Unformatted)' */
    PartEntry->New = TRUE;
    PartEntry->IsPartitioned = TRUE;
 
    PartEntry->BootIndicator = FALSE;
    if (PartitionInfo)
    {
        if (!isContainer)
        {
            PartEntry->PartitionType = (UCHAR)PartitionInfo;
        }
        else
        {
            /* Set the correct extended container partition type,
             * depending on whether it is contained below or above
             * the 1024-cylinder (usually 8.4GB/7.8GiB) boundary:
             * - below: INT13h CHS partition;
             * - above: Extended INT13h LBA partition. */
            if ((PartEntry->StartSector.QuadPart + PartEntry->SectorCount.QuadPart - 1)
                  / (DiskEntry->TracksPerCylinder * DiskEntry->SectorsPerTrack) < 1024)
            {
                PartEntry->PartitionType = PARTITION_EXTENDED;
            }
            else
            {
                PartEntry->PartitionType = PARTITION_XINT13_EXTENDED;
            }
        }
    }
    else
    {
// FIXME: Use FileSystemToMBRPartitionType() only for MBR, otherwise use PARTITION_BASIC_DATA_GUID.
        ASSERT(!isContainer);
        PartEntry->PartitionType = FileSystemToMBRPartitionType(L"RAW",
                                                                PartEntry->StartSector.QuadPart,
                                                                PartEntry->SectorCount.QuadPart);
    }
    ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
    PartEntry->FormatState = Unformatted;
    PartEntry->FileSystem[0] = L'\0';
 
    if (isContainer)
    {
        DiskEntry->ExtendedPartition = PartEntry;
        AddLogicalDiskSpace(DiskEntry);
    }
 
    DPRINT1("First Sector : %I64u\n", PartEntry->StartSector.QuadPart);
    DPRINT1("Last Sector  : %I64u\n", PartEntry->StartSector.QuadPart + PartEntry->SectorCount.QuadPart - 1);
    DPRINT1("Total Sectors: %I64u\n", PartEntry->SectorCount.QuadPart);
 
    return TRUE;
}

Referenced by CreatePartition().

InsertDiskRegion()

static BOOLEAN InsertDiskRegion ( IN PDISKENTRY  DiskEntry, IN PPARTENTRY  PartEntry, IN BOOLEAN  LogicalPartition  )

static

Definition at line 574 of file partlist.c.

{
    PLIST_ENTRY List;
    PLIST_ENTRY Entry;
    PPARTENTRY PartEntry2;
 
    /* Use the correct partition list */
    if (LogicalPartition)
        List = &DiskEntry->LogicalPartListHead;
    else
        List = &DiskEntry->PrimaryPartListHead;
 
    /* Find the first disk region before which we need to insert the new one */
    for (Entry = List->Flink; Entry != List; Entry = Entry->Flink)
    {
        PartEntry2 = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
 
        /* Ignore any unused empty region */
        if ((PartEntry2->PartitionType == PARTITION_ENTRY_UNUSED &&
             PartEntry2->StartSector.QuadPart == 0) || PartEntry2->SectorCount.QuadPart == 0)
        {
            continue;
        }
 
        /* If the current region ends before the one to be inserted, try again */
        if (PartEntry2->StartSector.QuadPart + PartEntry2->SectorCount.QuadPart - 1 < PartEntry->StartSector.QuadPart)
            continue;
 
        /*
         * One of the disk region boundaries crosses the desired region
         * (it starts after the desired region, or ends before the end
         * of the desired region): this is an impossible situation because
         * disk regions (partitions) cannot overlap!
         * Throw an error and bail out.
         */
        if (max(PartEntry->StartSector.QuadPart, PartEntry2->StartSector.QuadPart)
            <=
            min( PartEntry->StartSector.QuadPart +  PartEntry->SectorCount.QuadPart - 1,
                PartEntry2->StartSector.QuadPart + PartEntry2->SectorCount.QuadPart - 1))
        {
            DPRINT1("Disk region overlap problem, stopping there!\n"
                    "Partition to be inserted:\n"
                    "    StartSector = %I64u ; EndSector = %I64u\n"
                    "Existing disk region:\n"
                    "    StartSector = %I64u ; EndSector = %I64u\n",
                     PartEntry->StartSector.QuadPart,
                     PartEntry->StartSector.QuadPart +  PartEntry->SectorCount.QuadPart - 1,
                    PartEntry2->StartSector.QuadPart,
                    PartEntry2->StartSector.QuadPart + PartEntry2->SectorCount.QuadPart - 1);
            return FALSE;
        }
 
        /* We have found the first region before which the new one has to be inserted */
        break;
    }
 
    /* Insert the disk region */
    InsertTailList(Entry, &PartEntry->ListEntry);
    return TRUE;
}

Referenced by AddPartitionToDisk().

IsEmptyLayoutEntry()

static BOOLEAN IsEmptyLayoutEntry ( _In_ PPARTITION_INFORMATION  PartitionInfo )

inlinestatic

Definition at line 2417 of file partlist.c.

{
    return (PartitionInfo->StartingOffset.QuadPart == 0 &&
            PartitionInfo->PartitionLength.QuadPart == 0);
}

Referenced by UpdateDiskLayout().

IsPartitionActive()

BOOLEAN IsPartitionActive

(

IN PPARTENTRY

PartEntry

)

Definition at line 1844 of file partlist.c.

{
    // TODO: Support for GPT disks!
 
    if (IsContainerPartition(PartEntry->PartitionType))
        return FALSE;
 
    /* Check if the partition is partitioned, used and active */
    if (PartEntry->IsPartitioned &&
        // !IsContainerPartition(PartEntry->PartitionType) &&
        PartEntry->BootIndicator)
    {
        /* Yes it is */
        ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
        return TRUE;
    }
 
    return FALSE;
}

Referenced by GetActiveDiskPartition(), SelectPartitionPage(), and SetActivePartition().

IsSamePrimaryLayoutEntry()

static BOOLEAN IsSamePrimaryLayoutEntry ( _In_ PPARTITION_INFORMATION  PartitionInfo, _In_ PPARTENTRY  PartEntry  )

inlinestatic

Definition at line 2426 of file partlist.c.

{
    return ((PartitionInfo->StartingOffset.QuadPart == GetPartEntryOffsetInBytes(PartEntry)) &&
            (PartitionInfo->PartitionLength.QuadPart == GetPartEntrySizeInBytes(PartEntry)));
//        PartitionInfo->PartitionType == PartEntry->PartitionType
}

Referenced by UpdateDiskLayout().

IsSuperFloppy()

BOOLEAN IsSuperFloppy

(

IN PDISKENTRY

DiskEntry

)

Definition at line 501 of file partlist.c.

{
    PPARTITION_INFORMATION PartitionInfo;
    ULONGLONG PartitionLengthEstimate;
 
    /* No layout buffer: we cannot say anything yet */
    if (DiskEntry->LayoutBuffer == NULL)
        return FALSE;
 
    /* We must have only one partition */
    if (DiskEntry->LayoutBuffer->PartitionCount != 1)
        return FALSE;
 
    /* Get the single partition entry */
    PartitionInfo = DiskEntry->LayoutBuffer->PartitionEntry;
 
    /* The single partition must start at the beginning of the disk */
    if (!(PartitionInfo->StartingOffset.QuadPart == 0 &&
          PartitionInfo->HiddenSectors == 0))
    {
        return FALSE;
    }
 
    /* The disk signature is usually set to one; warn in case it's not */
    if (DiskEntry->LayoutBuffer->Signature != 1)
    {
        DPRINT1("Super-Floppy disk %lu signature %08x != 1!\n",
                DiskEntry->DiskNumber, DiskEntry->LayoutBuffer->Signature);
    }
 
    /*
     * The partition number must be zero or one, be recognized,
     * have FAT16 type and report as non-bootable.
     */
    if ((PartitionInfo->PartitionNumber != 0 &&
         PartitionInfo->PartitionNumber != 1) ||
        PartitionInfo->RecognizedPartition != TRUE ||
        PartitionInfo->PartitionType != PARTITION_FAT_16 ||
        PartitionInfo->BootIndicator != FALSE)
    {
        DPRINT1("Super-Floppy disk %lu does not return default settings!\n"
                "    PartitionNumber = %lu, expected 0\n"
                "    RecognizedPartition = %s, expected TRUE\n"
                "    PartitionType = 0x%02x, expected 0x04 (PARTITION_FAT_16)\n"
                "    BootIndicator = %s, expected FALSE\n",
                DiskEntry->DiskNumber,
                PartitionInfo->PartitionNumber,
                PartitionInfo->RecognizedPartition ? "TRUE" : "FALSE",
                PartitionInfo->PartitionType,
                PartitionInfo->BootIndicator ? "TRUE" : "FALSE");
    }
 
    /* The partition lengths should agree */
    PartitionLengthEstimate = GetDiskSizeInBytes(DiskEntry);
    if (PartitionInfo->PartitionLength.QuadPart != PartitionLengthEstimate)
    {
        DPRINT1("PartitionLength = %I64u is different from PartitionLengthEstimate = %I64u\n",
                PartitionInfo->PartitionLength.QuadPart, PartitionLengthEstimate);
    }
 
    return TRUE;
}

Referenced by AddDiskToList(), BootLoaderHardDiskPage(), ExtendedPartitionCreationChecks(), PartitionCreationChecks(), and xHalIoWritePartitionTable().

IsSupportedActivePartition()

static BOOLEAN IsSupportedActivePartition ( IN PPARTENTRY  PartEntry )

static

Definition at line 3135 of file partlist.c.

{
    /* Check the type and the file system of this partition */
 
    /*
     * We do not support extended partition containers (on MBR disks) marked
     * as active, and containing code inside their extended boot records.
     */
    if (IsContainerPartition(PartEntry->PartitionType))
    {
        DPRINT1("System partition %lu in disk %lu is an extended partition container?!\n",
                PartEntry->PartitionNumber, PartEntry->DiskEntry->DiskNumber);
        return FALSE;
    }
 
    /*
     * ADDITIONAL CHECKS / BIG HACK:
     *
     * Retrieve its file system and check whether we have
     * write support for it. If that is the case we are fine
     * and we can use it directly. However if we don't have
     * write support we will need to change the active system
     * partition.
     *
     * NOTE that this is completely useless on architectures
     * where a real system partition is required, as on these
     * architectures the partition uses the FAT FS, for which
     * we do have write support.
     * NOTE also that for those architectures looking for a
     * partition boot indicator is insufficient.
     */
    if (PartEntry->FormatState == Unformatted)
    {
        /* If this partition is mounted, it would use RawFS ("RAW") */
        return TRUE;
    }
    else if ((PartEntry->FormatState == Preformatted) ||
             (PartEntry->FormatState == Formatted))
    {
        ASSERT(*PartEntry->FileSystem);
 
        /* NOTE: Please keep in sync with the RegisteredFileSystems list! */
        if (wcsicmp(PartEntry->FileSystem, L"FAT")   == 0 ||
            wcsicmp(PartEntry->FileSystem, L"FAT32") == 0 ||
         // wcsicmp(PartEntry->FileSystem, L"NTFS")  == 0 ||
            wcsicmp(PartEntry->FileSystem, L"BTRFS") == 0)
        {
            return TRUE;
        }
        else
        {
            // WARNING: We cannot write on this FS yet!
            DPRINT1("Recognized file system '%S' that doesn't have write support yet!\n",
                    PartEntry->FileSystem);
            return FALSE;
        }
    }
    else // if (PartEntry->FormatState == UnknownFormat)
    {
        ASSERT(!*PartEntry->FileSystem);
 
        DPRINT1("System partition %lu in disk %lu with no or unknown FS?!\n",
                PartEntry->PartitionNumber, PartEntry->DiskEntry->DiskNumber);
        return FALSE;
    }
 
    // HACK: WARNING: We cannot write on this FS yet!
    // See fsutil.c:InferFileSystem()
    if (PartEntry->PartitionType == PARTITION_IFS)
    {
        DPRINT1("Recognized file system '%S' that doesn't have write support yet!\n",
                PartEntry->FileSystem);
        return FALSE;
    }
 
    return TRUE;
}

Referenced by FindSupportedSystemPartition().

PartitionCreationChecks()

ERROR_NUMBER PartitionCreationChecks

(

_In_ PPARTENTRY

PartEntry

)

Definition at line 2761 of file partlist.c.

{
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n");
        return ERROR_WARN_PARTITION;
    }
 
    /* Fail if the partition is already in use */
    if (PartEntry->IsPartitioned)
        return ERROR_NEW_PARTITION;
 
    /*
     * For primary partitions
     */
    if (!PartEntry->LogicalPartition)
    {
        /* Only one primary partition is allowed on super-floppy */
        if (IsSuperFloppy(DiskEntry))
            return ERROR_PARTITION_TABLE_FULL;
 
        /* Fail if there are already 4 primary partitions in the list */
        if (GetPrimaryPartitionCount(DiskEntry) >= 4)
            return ERROR_PARTITION_TABLE_FULL;
    }
    /*
     * For logical partitions
     */
    else
    {
        // TODO: Check that we are inside an extended partition!!
        // Then the following check will be useless.
 
        /* Only one (primary) partition is allowed on super-floppy */
        if (IsSuperFloppy(DiskEntry))
            return ERROR_PARTITION_TABLE_FULL;
    }
 
    return ERROR_SUCCESS;
}

Referenced by CreatePartition(), and SelectPartitionPage().

ReAllocateLayoutBuffer()

static BOOLEAN ReAllocateLayoutBuffer ( IN PDISKENTRY  DiskEntry )

static

Definition at line 2471 of file partlist.c.

{
    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(ProcessHeap,
                                        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;
}

Referenced by UpdateDiskLayout().

RoundingDivide()

ULONGLONG RoundingDivide	(	IN ULONGLONG	Dividend,
		IN ULONGLONG	Divisor
	)

Definition at line 95 of file partlist.c.

{
    return (Dividend + Divisor / 2) / Divisor;
}

Referenced by CreatePartitionPage(), IsPartitionLargeEnough(), ListPartition(), PrettifySize1(), PrettifySize2(), PrintDisk(), PrintDiskData(), PrintPartitionData(), and PrintVolume().

ScanForUnpartitionedDiskSpace()

static VOID ScanForUnpartitionedDiskSpace ( IN PDISKENTRY  DiskEntry )

static

Definition at line 1032 of file partlist.c.

{
    ULONGLONG StartSector;
    ULONGLONG SectorCount;
    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 entry that represents the empty disk */
 
        if (DiskEntry->SectorAlignment < 2048)
            StartSector = 2048ULL;
        else
            StartSector = (ULONGLONG)DiskEntry->SectorAlignment;
        SectorCount = AlignDown(DiskEntry->SectorCount.QuadPart, DiskEntry->SectorAlignment) - StartSector;
 
        NewPartEntry = CreateInsertBlankRegion(DiskEntry,
                                               &DiskEntry->PrimaryPartListHead,
                                               StartSector,
                                               SectorCount,
                                               FALSE);
        if (!NewPartEntry)
            DPRINT1("Failed to create a new empty region for full disk space!\n");
 
        return;
    }
 
    /* Start partition at head 1, cylinder 0 */
    if (DiskEntry->SectorAlignment < 2048)
        LastStartSector = 2048ULL;
    else
        LastStartSector = (ULONGLONG)DiskEntry->SectorAlignment;
    LastSectorCount = 0ULL;
    LastUnusedSectorCount = 0ULL;
 
    for (Entry = DiskEntry->PrimaryPartListHead.Flink;
         Entry != &DiskEntry->PrimaryPartListHead;
         Entry = Entry->Flink)
    {
        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);
 
                StartSector = LastStartSector + LastSectorCount;
                SectorCount = AlignDown(StartSector + LastUnusedSectorCount, DiskEntry->SectorAlignment) - StartSector;
 
                /* Insert the table into the list */
                NewPartEntry = CreateInsertBlankRegion(DiskEntry,
                                                       &PartEntry->ListEntry,
                                                       StartSector,
                                                       SectorCount,
                                                       FALSE);
                if (!NewPartEntry)
                {
                    DPRINT1("Failed to create a new empty region for disk space!\n");
                    return;
                }
            }
 
            LastStartSector = PartEntry->StartSector.QuadPart;
            LastSectorCount = PartEntry->SectorCount.QuadPart;
        }
    }
 
    /* 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)
        {
            DPRINT("Unpartitioned disk space: %I64u sectors\n", LastUnusedSectorCount);
 
            StartSector = LastStartSector + LastSectorCount;
            SectorCount = AlignDown(StartSector + LastUnusedSectorCount, DiskEntry->SectorAlignment) - StartSector;
 
            /* Append the table to the list */
            NewPartEntry = CreateInsertBlankRegion(DiskEntry,
                                                   &DiskEntry->PrimaryPartListHead,
                                                   StartSector,
                                                   SectorCount,
                                                   FALSE);
            if (!NewPartEntry)
            {
                DPRINT1("Failed to create a new empty region for trailing disk space!\n");
                return;
            }
        }
    }
 
    if (DiskEntry->ExtendedPartition != NULL)
    {
        if (IsListEmpty(&DiskEntry->LogicalPartListHead))
        {
            DPRINT1("No logical partition!\n");
 
            /* Create a partition entry that represents the empty extended partition */
            AddLogicalDiskSpace(DiskEntry);
            return;
        }
 
        /* Start partition at head 1, cylinder 0 */
        LastStartSector = DiskEntry->ExtendedPartition->StartSector.QuadPart + (ULONGLONG)DiskEntry->SectorAlignment;
        LastSectorCount = 0ULL;
        LastUnusedSectorCount = 0ULL;
 
        for (Entry = DiskEntry->LogicalPartListHead.Flink;
             Entry != &DiskEntry->LogicalPartListHead;
             Entry = Entry->Flink)
        {
            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);
 
                    StartSector = LastStartSector + LastSectorCount;
                    SectorCount = AlignDown(StartSector + LastUnusedSectorCount, DiskEntry->SectorAlignment) - StartSector;
 
                    /* Insert the table into the list */
                    NewPartEntry = CreateInsertBlankRegion(DiskEntry,
                                                           &PartEntry->ListEntry,
                                                           StartSector,
                                                           SectorCount,
                                                           TRUE);
                    if (!NewPartEntry)
                    {
                        DPRINT1("Failed to create a new empty region for extended partition space!\n");
                        return;
                    }
                }
 
                LastStartSector = PartEntry->StartSector.QuadPart;
                LastSectorCount = PartEntry->SectorCount.QuadPart;
            }
        }
 
        /* 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);
 
                StartSector = LastStartSector + LastSectorCount;
                SectorCount = AlignDown(StartSector + LastUnusedSectorCount, DiskEntry->SectorAlignment) - StartSector;
 
                /* Append the table to the list */
                NewPartEntry = CreateInsertBlankRegion(DiskEntry,
                                                       &DiskEntry->LogicalPartListHead,
                                                       StartSector,
                                                       SectorCount,
                                                       TRUE);
                if (!NewPartEntry)
                {
                    DPRINT1("Failed to create a new empty region for extended partition space!\n");
                    return;
                }
            }
        }
    }
 
    DPRINT("ScanForUnpartitionedDiskSpace() done\n");
}

Referenced by AddDiskToList().

SelectPartition()

PPARTENTRY SelectPartition	(	_In_ PPARTLIST	List,
		_In_ ULONG	DiskNumber,
		_In_ ULONG	PartitionNumber
	)

Definition at line 2204 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PPARTENTRY PartEntry;
 
    /* Find the disk */
    DiskEntry = GetDiskByNumber(List, DiskNumber);
    if (!DiskEntry)
        return NULL;
    ASSERT(DiskEntry->DiskNumber == DiskNumber);
 
    /* Find the partition */
    PartEntry = GetPartition(DiskEntry, PartitionNumber);
    if (!PartEntry)
        return NULL;
    ASSERT(PartEntry->DiskEntry == DiskEntry);
    ASSERT(PartEntry->PartitionNumber == PartitionNumber);
 
    return PartEntry;
}

Referenced by EnumerateInstallations(), and SelectPartitionPage().

SetActivePartition()

BOOLEAN SetActivePartition	(	IN PPARTLIST	List,
		IN PPARTENTRY	PartEntry,
		IN PPARTENTRY OldActivePart	OPTIONAL
	)

Definition at line 3515 of file partlist.c.

{
    /* Check for empty disk list */
    if (IsListEmpty(&List->DiskListHead))
        return FALSE;
 
    /* Validate the partition entry */
    if (!PartEntry)
        return FALSE;
 
    /*
     * If the partition entry is already the system partition, or if it is
     * the same as the old active partition hint the user provided (and if
     * it is already active), just return success.
     */
    if ((PartEntry == List->SystemPartition) ||
        ((PartEntry == OldActivePart) && IsPartitionActive(OldActivePart)))
    {
        return TRUE;
    }
 
    ASSERT(PartEntry->DiskEntry);
 
    /* Ensure that the partition's disk is in the list */
    ASSERT(PartEntry->DiskEntry->PartList == List);
 
    /*
     * If the user provided an old active partition hint, verify that it is
     * indeeed active and belongs to the same disk where the new partition
     * belongs. Otherwise determine the current active partition on the disk
     * where the new partition belongs.
     */
    if (!(OldActivePart && IsPartitionActive(OldActivePart) && (OldActivePart->DiskEntry == PartEntry->DiskEntry)))
    {
        /* It's not, determine the current active partition for the disk */
        OldActivePart = GetActiveDiskPartition(PartEntry->DiskEntry);
    }
 
    /* Unset the old active partition if it exists */
    if (OldActivePart)
    {
        OldActivePart->BootIndicator = FALSE;
        OldActivePart->DiskEntry->LayoutBuffer->PartitionEntry[OldActivePart->PartitionIndex].BootIndicator = FALSE;
        OldActivePart->DiskEntry->LayoutBuffer->PartitionEntry[OldActivePart->PartitionIndex].RewritePartition = TRUE;
        OldActivePart->DiskEntry->Dirty = TRUE;
    }
 
    /* Modify the system partition if the new partition is on the system disk */
    if (PartEntry->DiskEntry == GetSystemDisk(List))
        List->SystemPartition = PartEntry;
 
    /* Set the new active partition */
    PartEntry->BootIndicator = TRUE;
    PartEntry->DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].BootIndicator = TRUE;
    PartEntry->DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].RewritePartition = TRUE;
    PartEntry->DiskEntry->Dirty = TRUE;
 
    return TRUE;
}

Referenced by InitSystemPartition().

SetDiskSignature()

static VOID SetDiskSignature ( IN PPARTLIST  List, IN PDISKENTRY  DiskEntry  )

static

Definition at line 1229 of file partlist.c.

{
    LARGE_INTEGER SystemTime;
    TIME_FIELDS TimeFields;
    PLIST_ENTRY Entry2;
    PDISKENTRY DiskEntry2;
    PUCHAR Buffer;
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
        return;
    }
 
    Buffer = (PUCHAR)&DiskEntry->LayoutBuffer->Signature;
 
    while (TRUE)
    {
        NtQuerySystemTime(&SystemTime);
        RtlTimeToTimeFields(&SystemTime, &TimeFields);
 
        Buffer[0] = (UCHAR)(TimeFields.Year & 0xFF) + (UCHAR)(TimeFields.Hour & 0xFF);
        Buffer[1] = (UCHAR)(TimeFields.Year >> 8) + (UCHAR)(TimeFields.Minute & 0xFF);
        Buffer[2] = (UCHAR)(TimeFields.Month & 0xFF) + (UCHAR)(TimeFields.Second & 0xFF);
        Buffer[3] = (UCHAR)(TimeFields.Day & 0xFF) + (UCHAR)(TimeFields.Milliseconds & 0xFF);
 
        if (DiskEntry->LayoutBuffer->Signature == 0)
        {
            continue;
        }
 
        /* Check if the signature already exist */
        /* FIXME:
         *   Check also signatures from disks, which are
         *   not visible (bootable) by the bios.
         */
        for (Entry2 = List->DiskListHead.Flink;
             Entry2 != &List->DiskListHead;
             Entry2 = Entry2->Flink)
        {
            DiskEntry2 = CONTAINING_RECORD(Entry2, DISKENTRY, ListEntry);
 
            if (DiskEntry2->DiskStyle == PARTITION_STYLE_GPT)
            {
                DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
                continue;
            }
 
            if (DiskEntry != DiskEntry2 &&
                DiskEntry->LayoutBuffer->Signature == DiskEntry2->LayoutBuffer->Signature)
                break;
        }
 
        if (Entry2 == &List->DiskListHead)
            break;
    }
}

Referenced by UpdateDiskSignatures().

SetMBRPartitionType()

VOID SetMBRPartitionType	(	IN PPARTENTRY	PartEntry,
		IN UCHAR	PartitionType
	)

Definition at line 3897 of file partlist.c.

{
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
 
    ASSERT(DiskEntry->DiskStyle == PARTITION_STYLE_MBR);
 
    PartEntry->PartitionType = PartitionType;
 
    DiskEntry->Dirty = TRUE;
    DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].PartitionType = PartitionType;
    DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].RecognizedPartition = IsRecognizedPartition(PartitionType);
    DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].RewritePartition = TRUE;
}

Referenced by FormatPartition().

SetMountedDeviceValue()

BOOLEAN SetMountedDeviceValue	(	IN WCHAR	Letter,
		IN ULONG	Signature,
		IN LARGE_INTEGER	StartingOffset
	)

Definition at line 3760 of file partlist.c.

{
    NTSTATUS Status;
    OBJECT_ATTRIBUTES ObjectAttributes;
    UNICODE_STRING KeyName = RTL_CONSTANT_STRING(L"SYSTEM\\MountedDevices");
    UNICODE_STRING ValueName;
    WCHAR ValueNameBuffer[16];
    HANDLE KeyHandle;
    REG_DISK_MOUNT_INFO MountInfo;
 
    RtlStringCchPrintfW(ValueNameBuffer, ARRAYSIZE(ValueNameBuffer),
                        L"\\DosDevices\\%c:", Letter);
    RtlInitUnicodeString(&ValueName, ValueNameBuffer);
 
    InitializeObjectAttributes(&ObjectAttributes,
                               &KeyName,
                               OBJ_CASE_INSENSITIVE,
                               GetRootKeyByPredefKey(HKEY_LOCAL_MACHINE, NULL),
                               NULL);
 
    Status = NtOpenKey(&KeyHandle,
                       KEY_ALL_ACCESS,
                       &ObjectAttributes);
    if (!NT_SUCCESS(Status))
    {
        Status = NtCreateKey(&KeyHandle,
                             KEY_ALL_ACCESS,
                             &ObjectAttributes,
                             0,
                             NULL,
                             REG_OPTION_NON_VOLATILE,
                             NULL);
    }
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtCreateKey() failed (Status %lx)\n", Status);
        return FALSE;
    }
 
    MountInfo.Signature = Signature;
    MountInfo.StartingOffset = StartingOffset;
    Status = NtSetValueKey(KeyHandle,
                           &ValueName,
                           0,
                           REG_BINARY,
                           (PVOID)&MountInfo,
                           sizeof(MountInfo));
    NtClose(KeyHandle);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtSetValueKey() failed (Status %lx)\n", Status);
        return FALSE;
    }
 
    return TRUE;
}

Referenced by SetMountedDeviceValues().

SetMountedDeviceValues()

BOOLEAN SetMountedDeviceValues

(

IN PPARTLIST

List

)

Definition at line 3821 of file partlist.c.

{
    PLIST_ENTRY Entry1, Entry2;
    PDISKENTRY DiskEntry;
    PPARTENTRY PartEntry;
    LARGE_INTEGER StartingOffset;
 
    if (List == NULL)
        return FALSE;
 
    for (Entry1 = List->DiskListHead.Flink;
         Entry1 != &List->DiskListHead;
         Entry1 = Entry1->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry1,
                                      DISKENTRY,
                                      ListEntry);
 
        if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
        {
            DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
            continue;
        }
 
        for (Entry2 = DiskEntry->PrimaryPartListHead.Flink;
             Entry2 != &DiskEntry->PrimaryPartListHead;
             Entry2 = Entry2->Flink)
        {
            PartEntry = CONTAINING_RECORD(Entry2, PARTENTRY, ListEntry);
            if (PartEntry->IsPartitioned) // && !IsContainerPartition(PartEntry->PartitionType)
            {
                ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
                /* Assign a "\DosDevices\#:" mount point to this partition */
                if (PartEntry->DriveLetter)
                {
                    StartingOffset.QuadPart = GetPartEntryOffsetInBytes(PartEntry);
                    if (!SetMountedDeviceValue(PartEntry->DriveLetter,
                                               DiskEntry->LayoutBuffer->Signature,
                                               StartingOffset))
                    {
                        return FALSE;
                    }
                }
            }
        }
 
        for (Entry2 = DiskEntry->LogicalPartListHead.Flink;
             Entry2 != &DiskEntry->LogicalPartListHead;
             Entry2 = Entry2->Flink)
        {
            PartEntry = CONTAINING_RECORD(Entry2, PARTENTRY, ListEntry);
            if (PartEntry->IsPartitioned) // && !IsContainerPartition(PartEntry->PartitionType)
            {
                ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
                /* Assign a "\DosDevices\#:" mount point to this partition */
                if (PartEntry->DriveLetter)
                {
                    StartingOffset.QuadPart = GetPartEntryOffsetInBytes(PartEntry);
                    if (!SetMountedDeviceValue(PartEntry->DriveLetter,
                                               DiskEntry->LayoutBuffer->Signature,
                                               StartingOffset))
                    {
                        return FALSE;
                    }
                }
            }
        }
    }
 
    return TRUE;
}

Referenced by UpdateRegistry().

SystemConfigurationDataQueryRoutine()

static NTSTATUS NTAPI SystemConfigurationDataQueryRoutine ( PWSTR  ValueName, ULONG  ValueType, PVOID  ValueData, ULONG  ValueLength, PVOID  Context, PVOID  EntryContext  )

static

Definition at line 290 of file partlist.c.

{
    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(ProcessHeap, 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;
}

Referenced by EnumerateBiosDiskEntries().

UpdateDiskLayout()

static VOID UpdateDiskLayout ( IN PDISKENTRY  DiskEntry )

static

Definition at line 2523 of file partlist.c.

{
    PPARTITION_INFORMATION PartitionInfo;
    PPARTITION_INFORMATION LinkInfo;
    PLIST_ENTRY ListEntry;
    PPARTENTRY PartEntry;
    LARGE_INTEGER HiddenSectors64;
    ULONG Index;
    ULONG PartitionNumber = 1;
 
    DPRINT1("UpdateDiskLayout()\n");
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n");
        return;
    }
 
    /* 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, PartEntry))
            {
                DPRINT1("Updating primary partition entry %lu\n", Index);
 
                PartitionInfo->StartingOffset.QuadPart = GetPartEntryOffsetInBytes(PartEntry);
                PartitionInfo->PartitionLength.QuadPart = GetPartEntrySizeInBytes(PartEntry);
                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 */
    LinkInfo = NULL;
    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 = GetPartEntryOffsetInBytes(PartEntry);
            PartitionInfo->PartitionLength.QuadPart = GetPartEntrySizeInBytes(PartEntry);
            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)
            {
                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;
 
                /* Extended partition links only use type 0x05, as observed
                 * on Windows NT. Alternatively they could inherit the type
                 * of the main extended container. */
                LinkInfo->PartitionType = PARTITION_EXTENDED; // DiskEntry->ExtendedPartition->PartitionType;
 
                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;
            }
        }
    }
 
    // HACK: See the FIXMEs in WritePartitions(): (Re)set the PartitionStyle to MBR.
    DiskEntry->DiskStyle = PARTITION_STYLE_MBR;
 
    DiskEntry->Dirty = TRUE;
 
#ifdef DUMP_PARTITION_TABLE
    DumpPartitionTable(DiskEntry);
#endif
}

Referenced by active_main(), CreateExtendedPartition(), CreateLogicalPartition(), CreatePartition(), CreatePrimaryPartition(), DeletePartition(), inactive_main(), setid_main(), and UniqueIdDisk().

UpdateDiskSignatures()

static VOID UpdateDiskSignatures ( IN PPARTLIST  List )

static

Definition at line 1291 of file partlist.c.

{
    PLIST_ENTRY Entry;
    PDISKENTRY DiskEntry;
 
    /* Update each disk */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
        {
            DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
            continue;
        }
 
        if (DiskEntry->LayoutBuffer &&
            DiskEntry->LayoutBuffer->Signature == 0)
        {
            SetDiskSignature(List, DiskEntry);
            DiskEntry->LayoutBuffer->PartitionEntry[0].RewritePartition = TRUE;
        }
    }
}

Referenced by CreatePartitionList().

UpdateHwDiskNumbers()

static VOID UpdateHwDiskNumbers ( IN PPARTLIST  List )

static

Definition at line 1321 of file partlist.c.

{
    PLIST_ENTRY ListEntry;
    PBIOSDISKENTRY BiosDiskEntry;
    PDISKENTRY DiskEntry;
    ULONG HwAdapterNumber = 0;
    ULONG HwControllerNumber = 0;
    ULONG RemovableDiskCount = 0;
 
    /*
     * Enumerate the disks recognized by the BIOS and recompute the disk
     * numbers on the system when *ALL* removable disks are not connected.
     * The entries are inserted in increasing order of AdapterNumber,
     * ControllerNumber and DiskNumber.
     */
    for (ListEntry = List->BiosDiskListHead.Flink;
         ListEntry != &List->BiosDiskListHead;
         ListEntry = ListEntry->Flink)
    {
        BiosDiskEntry = CONTAINING_RECORD(ListEntry, BIOSDISKENTRY, ListEntry);
        DiskEntry = BiosDiskEntry->DiskEntry;
 
        /*
         * If the adapter or controller numbers change, update them and reset
         * the number of removable disks on this adapter/controller.
         */
        if (HwAdapterNumber != BiosDiskEntry->AdapterNumber ||
            HwControllerNumber != BiosDiskEntry->ControllerNumber)
        {
            HwAdapterNumber = BiosDiskEntry->AdapterNumber;
            HwControllerNumber = BiosDiskEntry->ControllerNumber;
            RemovableDiskCount = 0;
        }
 
        /* Adjust the actual hardware disk number */
        if (DiskEntry)
        {
            ASSERT(DiskEntry->HwDiskNumber == BiosDiskEntry->DiskNumber);
 
            if (DiskEntry->MediaType == RemovableMedia)
            {
                /* Increase the number of removable disks and set the disk number to zero */
                ++RemovableDiskCount;
                DiskEntry->HwFixedDiskNumber = 0;
            }
            else // if (DiskEntry->MediaType == FixedMedia)
            {
                /* Adjust the fixed disk number, offset by the number of removable disks found before this one */
                DiskEntry->HwFixedDiskNumber = BiosDiskEntry->DiskNumber - RemovableDiskCount;
            }
        }
        else
        {
            DPRINT1("BIOS disk %lu is not recognized by NTOS!\n", BiosDiskEntry->DiskNumber);
        }
    }
}

Referenced by CreatePartitionList().

WritePartitions()

NTSTATUS WritePartitions

(

IN PDISKENTRY

DiskEntry

)

Definition at line 3579 of file partlist.c.

{
    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;
 
    RtlStringCchPrintfW(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;
    }
 
#ifdef DUMP_PARTITION_TABLE
    DumpPartitionTable(DiskEntry);
#endif
 
    //
    // 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;
    }
 
#ifdef DUMP_PARTITION_TABLE
    DumpPartitionTable(DiskEntry);
#endif
 
    /* 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;
        }
    }
 
    //
    // NOTE: Originally (see r40437), we used to install here also a new MBR
    // for this disk (by calling InstallMbrBootCodeToDisk), only if:
    // DiskEntry->NewDisk == TRUE and DiskEntry->HwDiskNumber == 0.
    // Then after that, both DiskEntry->NewDisk and DiskEntry->NoMbr were set
    // to FALSE. In the other place (in usetup.c) where InstallMbrBootCodeToDisk
    // was called too, the installation test was modified by checking whether
    // DiskEntry->NoMbr was TRUE (instead of NewDisk).
    //
 
    // HACK: Parts of FIXMEs described above: (Re)set the PartitionStyle to MBR.
    DiskEntry->DiskStyle = PARTITION_STYLE_MBR;
 
    /* The layout has been successfully updated, the disk is not dirty anymore */
    DiskEntry->Dirty = FALSE;
 
    return Status;
}

Referenced by active_main(), CreateExtendedPartition(), CreateLogicalPartition(), CreatePrimaryPartition(), DeletePartition(), FormatPartition(), inactive_main(), setid_main(), UniqueIdDisk(), and WritePartitionsToDisk().

WritePartitionsToDisk()

BOOLEAN WritePartitionsToDisk

(

IN PPARTLIST

List

)

Definition at line 3723 of file partlist.c.

{
    NTSTATUS Status;
    PLIST_ENTRY Entry;
    PDISKENTRY DiskEntry;
 
    if (List == NULL)
        return TRUE;
 
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
        {
            DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
            continue;
        }
 
        if (DiskEntry->Dirty != FALSE)
        {
            Status = WritePartitions(DiskEntry);
            if (!NT_SUCCESS(Status))
            {
                DPRINT1("WritePartitionsToDisk() failed to update disk %lu, Status 0x%08lx\n",
                        DiskEntry->DiskNumber, Status);
            }
        }
    }
 
    return TRUE;
}

Referenced by FsVolCommitOpsQueue().