ntoskrnl.c File Reference

#include <freeldr.h>
#include <ntoskrnl.h>
#include "disk/part_mbr.h"

Include dependency graph for ntoskrnl.c:

Go to the source code of this file.

Macros
#define	UNIMPLEMENTED   ASSERT(FALSE)

Functions
VOID NTAPI	KeInitializeEvent (IN PRKEVENT Event, IN EVENT_TYPE Type, IN BOOLEAN State)
VOID NTAPI	KeSetTimeIncrement (IN ULONG MaxIncrement, IN ULONG MinIncrement)
VOID FASTCALL	IoAssignDriveLetters (IN struct _LOADER_PARAMETER_BLOCK *LoaderBlock, IN PSTRING NtDeviceName, OUT PUCHAR NtSystemPath, OUT PSTRING NtSystemPathString)
NTSTATUS FASTCALL	IoSetPartitionInformation (IN PDEVICE_OBJECT DeviceObject, IN ULONG SectorSize, IN ULONG PartitionNumber, IN ULONG PartitionType)
NTSTATUS NTAPI	IopReadBootRecord (IN PDEVICE_OBJECT DeviceObject, IN ULONGLONG LogicalSectorNumber, IN ULONG SectorSize, OUT PMASTER_BOOT_RECORD BootRecord)
BOOLEAN NTAPI	IopCopyPartitionRecord (IN BOOLEAN ReturnRecognizedPartitions, IN ULONG SectorSize, IN PPARTITION_TABLE_ENTRY PartitionTableEntry, OUT PARTITION_INFORMATION *PartitionEntry)
NTSTATUS FASTCALL	IoReadPartitionTable (IN PDEVICE_OBJECT DeviceObject, IN ULONG SectorSize, IN BOOLEAN ReturnRecognizedPartitions, OUT PDRIVE_LAYOUT_INFORMATION *PartitionBuffer)
NTSTATUS FASTCALL	IoWritePartitionTable (IN PDEVICE_OBJECT DeviceObject, IN ULONG SectorSize, IN ULONG SectorsPerTrack, IN ULONG NumberOfHeads, IN PDRIVE_LAYOUT_INFORMATION PartitionBuffer)
VOID NTAPI	KeStallExecutionProcessor (IN ULONG MicroSeconds)

Macro Definition Documentation

UNIMPLEMENTED

#define UNIMPLEMENTED   ASSERT(FALSE)

Definition at line 15 of file ntoskrnl.c.

Function Documentation

IoAssignDriveLetters()

VOID FASTCALL IoAssignDriveLetters	(	IN struct _LOADER_PARAMETER_BLOCK *	LoaderBlock,
		IN PSTRING	NtDeviceName,
		OUT PUCHAR	NtSystemPath,
		OUT PSTRING	NtSystemPathString
	)

Definition at line 40 of file ntoskrnl.c.

{
}

Referenced by HalpAssignDriveLetters(), and IoInitSystem().

IopCopyPartitionRecord()

BOOLEAN NTAPI IopCopyPartitionRecord	(	IN BOOLEAN	ReturnRecognizedPartitions,
		IN ULONG	SectorSize,
		IN PPARTITION_TABLE_ENTRY	PartitionTableEntry,
		OUT PARTITION_INFORMATION *	PartitionEntry
	)

Definition at line 89 of file ntoskrnl.c.

{
    BOOLEAN IsRecognized;
 
    IsRecognized = TRUE; /* FIXME */
    if (!IsRecognized && ReturnRecognizedPartitions)
        return FALSE;
 
    PartitionEntry->StartingOffset.QuadPart = (ULONGLONG)PartitionTableEntry->SectorCountBeforePartition * SectorSize;
    PartitionEntry->PartitionLength.QuadPart = (ULONGLONG)PartitionTableEntry->PartitionSectorCount * SectorSize;
    PartitionEntry->HiddenSectors = 0;
    PartitionEntry->PartitionNumber = 0; /* Will be filled later */
    PartitionEntry->PartitionType = PartitionTableEntry->SystemIndicator;
    PartitionEntry->BootIndicator = (PartitionTableEntry->BootIndicator & 0x80) ? TRUE : FALSE;
    PartitionEntry->RecognizedPartition = IsRecognized;
    PartitionEntry->RewritePartition = FALSE;
 
    return TRUE;
}

Referenced by IoReadPartitionTable().

IopReadBootRecord()

NTSTATUS NTAPI IopReadBootRecord	(	IN PDEVICE_OBJECT	DeviceObject,
		IN ULONGLONG	LogicalSectorNumber,
		IN ULONG	SectorSize,
		OUT PMASTER_BOOT_RECORD	BootRecord
	)

Definition at line 64 of file ntoskrnl.c.

{
    ULONG_PTR FileId = (ULONG_PTR)DeviceObject;
    LARGE_INTEGER Position;
    ULONG BytesRead;
    ARC_STATUS Status;
 
    Position.QuadPart = LogicalSectorNumber * SectorSize;
    Status = ArcSeek(FileId, &Position, SeekAbsolute);
    if (Status != ESUCCESS)
        return STATUS_IO_DEVICE_ERROR;
 
    Status = ArcRead(FileId, BootRecord, SectorSize, &BytesRead);
    if (Status != ESUCCESS || BytesRead != SectorSize)
        return STATUS_IO_DEVICE_ERROR;
 
    return STATUS_SUCCESS;
}

Referenced by IoReadPartitionTable().

IoReadPartitionTable()

NTSTATUS FASTCALL IoReadPartitionTable	(	IN PDEVICE_OBJECT	DeviceObject,
		IN ULONG	SectorSize,
		IN BOOLEAN	ReturnRecognizedPartitions,
		OUT PDRIVE_LAYOUT_INFORMATION *	PartitionBuffer
	)

Definition at line 115 of file ntoskrnl.c.

{
    NTSTATUS Status;
    PMASTER_BOOT_RECORD MasterBootRecord;
    PDRIVE_LAYOUT_INFORMATION Partitions;
    ULONG NbPartitions, i, Size;
 
    *PartitionBuffer = NULL;
 
    if (SectorSize < sizeof(MASTER_BOOT_RECORD))
        return STATUS_NOT_SUPPORTED;
 
    MasterBootRecord = ExAllocatePool(NonPagedPool, SectorSize);
    if (!MasterBootRecord)
        return STATUS_NO_MEMORY;
 
    /* Read disk MBR */
    Status = IopReadBootRecord(DeviceObject, 0, SectorSize, MasterBootRecord);
    if (!NT_SUCCESS(Status))
    {
        ExFreePool(MasterBootRecord);
        return Status;
    }
 
    /* Check validity of boot record */
    if (MasterBootRecord->MasterBootRecordMagic != 0xaa55)
    {
        ExFreePool(MasterBootRecord);
        return STATUS_NOT_SUPPORTED;
    }
 
    /* Count number of partitions */
    NbPartitions = 0;
    for (i = 0; i < 4; i++)
    {
        NbPartitions++;
 
        if (MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_EXTENDED ||
            MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_XINT13_EXTENDED)
        {
            /* FIXME: unhandled case; count number of partitions */
            UNIMPLEMENTED;
        }
    }
 
    if (NbPartitions == 0)
    {
        ExFreePool(MasterBootRecord);
        return STATUS_NOT_SUPPORTED;
    }
 
    /* Allocation space to store partitions */
    Size = FIELD_OFFSET(DRIVE_LAYOUT_INFORMATION, PartitionEntry) +
           NbPartitions * sizeof(PARTITION_INFORMATION);
    Partitions = ExAllocatePool(NonPagedPool, Size);
    if (!Partitions)
    {
        ExFreePool(MasterBootRecord);
        return STATUS_NO_MEMORY;
    }
 
    /* Count number of partitions */
    NbPartitions = 0;
    for (i = 0; i < 4; i++)
    {
        if (IopCopyPartitionRecord(ReturnRecognizedPartitions,
                                   SectorSize,
                                   &MasterBootRecord->PartitionTable[i],
                                   &Partitions->PartitionEntry[NbPartitions]))
        {
            Partitions->PartitionEntry[NbPartitions].PartitionNumber = NbPartitions + 1;
            NbPartitions++;
        }
 
        if (MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_EXTENDED ||
            MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_XINT13_EXTENDED)
        {
            /* FIXME: unhandled case; copy partitions */
            UNIMPLEMENTED;
        }
    }
 
    Partitions->PartitionCount = NbPartitions;
    Partitions->Signature = MasterBootRecord->Signature;
    ExFreePool(MasterBootRecord);
 
    *PartitionBuffer = Partitions;
    return STATUS_SUCCESS;
}

Referenced by FstubReadPartitionTableMBR(), HalpReadPartitionTable(), and xHalIoReadPartitionTable().

IoSetPartitionInformation()

NTSTATUS FASTCALL IoSetPartitionInformation	(	IN PDEVICE_OBJECT	DeviceObject,
		IN ULONG	SectorSize,
		IN ULONG	PartitionNumber,
		IN ULONG	PartitionType
	)

Definition at line 50 of file ntoskrnl.c.

{
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by HalpSetPartitionInformation(), IoSetPartitionInformationEx(), and PartitionHandleDeviceControl().

IoWritePartitionTable()

NTSTATUS FASTCALL IoWritePartitionTable	(	IN PDEVICE_OBJECT	DeviceObject,
		IN ULONG	SectorSize,
		IN ULONG	SectorsPerTrack,
		IN ULONG	NumberOfHeads,
		IN PDRIVE_LAYOUT_INFORMATION	PartitionBuffer
	)

Definition at line 212 of file ntoskrnl.c.

{
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by FstubWritePartitionTableMBR(), and HalpWritePartitionTable().

KeInitializeEvent()

VOID NTAPI KeInitializeEvent	(	IN PRKEVENT	Event,
		IN EVENT_TYPE	Type,
		IN BOOLEAN	State
	)

Definition at line 22 of file ntoskrnl.c.

{
    RtlZeroMemory(Event, sizeof(*Event));
}

KeSetTimeIncrement()

VOID NTAPI KeSetTimeIncrement	(	IN ULONG	MaxIncrement,
		IN ULONG	MinIncrement
	)

Definition at line 32 of file ntoskrnl.c.

{
}

Referenced by HalInitSystem(), and HalpInitializeClock().

KeStallExecutionProcessor()

VOID NTAPI KeStallExecutionProcessor

(

IN ULONG

MicroSeconds

)

Definition at line 224 of file ntoskrnl.c.

{
    StallExecutionProcessor(MicroSeconds);
}