[weiden] 18932: - if a file object is a named pipe don't allow the FILE_APPEND_DATA access right as it equals FILE_CREATE_PIPE_INSTANCE (NtFlushBuffersFile and NtWriteFile)
1 Nov
2005
1 Nov
'05
4:17 p.m.
- if a file object is a named pipe don't allow the FILE_APPEND_DATA
access right as it equals FILE_CREATE_PIPE_INSTANCE (NtFlushBuffersFile
and NtWriteFile)
- add more parameters probing and capturing code
Modified: trunk/reactos/ntoskrnl/io/file.c
_____
Modified: trunk/reactos/ntoskrnl/io/file.c
--- trunk/reactos/ntoskrnl/io/file.c 2005-11-01 14:46:34 UTC (rev
18931)
+++ trunk/reactos/ntoskrnl/io/file.c 2005-11-01 16:17:25 UTC (rev
18932)
@@ -755,7 +755,6 @@
IO_SECURITY_CONTEXT SecurityContext;
KPROCESSOR_MODE AccessMode;
HANDLE LocalHandle;
- IO_STATUS_BLOCK LocalIoStatusBlock;
LARGE_INTEGER SafeAllocationSize;
PVOID SystemEaBuffer = NULL;
NTSTATUS Status = STATUS_SUCCESS;
@@ -988,7 +987,7 @@
//trigger FileObject/Event dereferencing
Irp->Tail.Overlay.OriginalFileObject = FileObject;
Irp->RequestorMode = AccessMode;
- Irp->UserIosb = &LocalIoStatusBlock;
+ Irp->UserIosb = IoStatusBlock;
Irp->AssociatedIrp.SystemBuffer = SystemEaBuffer;
Irp->Tail.Overlay.AuxiliaryBuffer = NULL;
Irp->Tail.Overlay.Thread = PsGetCurrentThread();
@@ -1054,7 +1053,7 @@
AccessMode,
FALSE,
NULL);
- Status = LocalIoStatusBlock.Status;
+ Status = IoStatusBlock->Status;
}
if (!NT_SUCCESS(Status))
{
@@ -1069,7 +1068,6 @@
_SEH_TRY
{
*FileHandle = LocalHandle;
- *IoStatusBlock = LocalIoStatusBlock;
}
_SEH_HANDLE
{
@@ -1380,20 +1378,41 @@
NtCancelIoFile(IN HANDLE FileHandle,
OUT PIO_STATUS_BLOCK IoStatusBlock)
{
- NTSTATUS Status;
PFILE_OBJECT FileObject;
PETHREAD Thread;
PIRP Irp;
KIRQL OldIrql;
BOOLEAN OurIrpsInList = FALSE;
LARGE_INTEGER Interval;
+ KPROCESSOR_MODE PreviousMode;
+ NTSTATUS Status = STATUS_SUCCESS;
- if ((ULONG_PTR)IoStatusBlock >= (ULONG_PTR)MmUserProbeAddress &&
- KeGetPreviousMode() != KernelMode)
- return STATUS_ACCESS_VIOLATION;
+ PAGED_CODE();
- Status = ObReferenceObjectByHandle(FileHandle, 0, IoFileObjectType,
- KeGetPreviousMode(),
(PVOID*)&FileObject,
+ PreviousMode = KeGetPreviousMode();
+
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ ProbeForWrite(IoStatusBlock,
+ sizeof(IO_STATUS_BLOCK),
+ sizeof(ULONG));
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status)) return Status;
+ }
+
+ Status = ObReferenceObjectByHandle(FileHandle,
+ 0,
+ IoFileObjectType,
+ PreviousMode,
+ (PVOID*)&FileObject,
NULL);
if (!NT_SUCCESS(Status))
return Status;
@@ -1531,23 +1550,39 @@
MAILSLOT_CREATE_PARAMETERS Buffer;
DPRINT("NtCreateMailslotFile(FileHandle 0x%p, DesiredAccess %x, "
- "ObjectAttributes 0x%p ObjectAttributes->ObjectName->Buffer
%S)\n",
- FileHandle,DesiredAccess,ObjectAttributes,
- ObjectAttributes->ObjectName->Buffer);
+ "ObjectAttributes 0x%p)\n",
+ FileHandle,DesiredAccess,ObjectAttributes);
+
PAGED_CODE();
/* Check for Timeout */
- if (TimeOut)
+ if (TimeOut != NULL)
{
- /* Enable it */
+ if (KeGetPreviousMode() != KernelMode)
+ {
+ NTSTATUS Status = STATUS_SUCCESS;
+
+ _SEH_TRY
+ {
+ Buffer.ReadTimeout = ProbeForReadLargeInteger(TimeOut);
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status)) return Status;
+ }
+ else
+ {
+ Buffer.ReadTimeout = *TimeOut;
+ }
+
Buffer.TimeoutSpecified = TRUE;
-
- /* FIXME: Add SEH */
- Buffer.ReadTimeout = *TimeOut;
}
else
{
- /* No timeout */
Buffer.TimeoutSpecified = FALSE;
}
@@ -1592,25 +1627,39 @@
NAMED_PIPE_CREATE_PARAMETERS Buffer;
DPRINT("NtCreateNamedPipeFile(FileHandle 0x%p, DesiredAccess %x, "
- "ObjectAttributes 0x%p ObjectAttributes->ObjectName->Buffer
%S)\n",
- FileHandle,DesiredAccess,ObjectAttributes,
- ObjectAttributes->ObjectName->Buffer);
+ "ObjectAttributes 0x%p)\n",
+ FileHandle,DesiredAccess,ObjectAttributes);
+
PAGED_CODE();
/* Check for Timeout */
- if (DefaultTimeout)
+ if (DefaultTimeout != NULL)
{
- /* Enable it */
+ if (KeGetPreviousMode() != KernelMode)
+ {
+ NTSTATUS Status = STATUS_SUCCESS;
+
+ _SEH_TRY
+ {
+ Buffer.DefaultTimeout =
ProbeForReadLargeInteger(DefaultTimeout);
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status)) return Status;
+ }
+ else
+ {
+ Buffer.DefaultTimeout = *DefaultTimeout;
+ }
+
Buffer.TimeoutSpecified = TRUE;
-
- /* FIXME: Add SEH */
- Buffer.DefaultTimeout = *DefaultTimeout;
}
else
- {
- /* No timeout */
Buffer.TimeoutSpecified = FALSE;
- }
/* Set Settings */
Buffer.NamedPipeType = NamedPipeType;
@@ -1724,6 +1773,8 @@
STDCALL
NtFlushWriteBuffer(VOID)
{
+ PAGED_CODE();
+
KeFlushWriteBuffer();
return STATUS_SUCCESS;
}
@@ -1746,21 +1797,57 @@
PFILE_OBJECT FileObject = NULL;
PIRP Irp;
PIO_STACK_LOCATION StackPtr;
- NTSTATUS Status;
+ NTSTATUS Status = STATUS_SUCCESS;
PDEVICE_OBJECT DeviceObject;
KEVENT Event;
BOOLEAN LocalEvent = FALSE;
- KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
+ ACCESS_MASK DesiredAccess = FILE_WRITE_DATA;
+ OBJECT_HANDLE_INFORMATION ObjectHandleInfo;
+ KPROCESSOR_MODE PreviousMode;
+ PAGED_CODE();
+
+ PreviousMode = KeGetPreviousMode();
+
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ ProbeForWrite(IoStatusBlock,
+ sizeof(IO_STATUS_BLOCK),
+ sizeof(ULONG));
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status)) return Status;
+ }
+
/* Get the File Object */
Status = ObReferenceObjectByHandle(FileHandle,
- FILE_WRITE_DATA,
- NULL,
+ 0,
+ IoFileObjectType,
PreviousMode,
(PVOID*)&FileObject,
- NULL);
- if (Status != STATUS_SUCCESS) return(Status);
+ &ObjectHandleInfo);
+ if (!NT_SUCCESS(Status)) return(Status);
+ /* check if the handle has either FILE_WRITE_DATA or
FILE_APPEND_DATA was
+ granted. However, if this is a named pipe, make sure we don't
ask for
+ FILE_APPEND_DATA as it interferes with the
FILE_CREATE_PIPE_INSTANCE
+ access right! */
+ if (!(FileObject->Flags & FO_NAMED_PIPE))
+ DesiredAccess |= FILE_APPEND_DATA;
+ if (!RtlAreAnyAccessesGranted(ObjectHandleInfo.GrantedAccess,
+ DesiredAccess))
+ {
+ ObDereferenceObject(FileObject);
+ return STATUS_ACCESS_DENIED;
+ }
+
/* Check if this is a direct open or not */
if (FileObject->Flags & FO_DIRECT_DEVICE_OPEN)
{
@@ -1968,13 +2055,18 @@
PDEVICE_OBJECT DeviceObject;
PKEVENT Event = NULL;
BOOLEAN LocalEvent = FALSE;
- KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
+ KPROCESSOR_MODE PreviousMode;
+ LARGE_INTEGER CapturedByteOffset, CapturedLength;
NTSTATUS Status = STATUS_SUCCESS;
OBJECT_HANDLE_INFORMATION HandleInformation;
-
- /* FIXME: instead of this, use SEH */
- if (!Length || !ByteOffset) return STATUS_INVALID_PARAMETER;
+ PAGED_CODE();
+
+ PreviousMode = KeGetPreviousMode();
+
+ CapturedByteOffset.QuadPart = 0;
+ CapturedLength.QuadPart = 0;
+
/* Get File Object */
Status = ObReferenceObjectByHandle(FileHandle,
0,
@@ -1984,13 +2076,42 @@
&HandleInformation);
if (!NT_SUCCESS(Status)) return Status;
- /* Must have FILE_READ_DATA | FILE_WRITE_DATA access */
- if (!(HandleInformation.GrantedAccess & (FILE_WRITE_DATA |
FILE_READ_DATA)))
+ if (PreviousMode != KernelMode)
{
- DPRINT1("Invalid access rights\n");
- ObDereferenceObject(FileObject);
- return STATUS_ACCESS_DENIED;
+ /* Must have either FILE_READ_DATA or FILE_WRITE_DATA access
unless
+ we're in KernelMode! */
+ if (!(HandleInformation.GrantedAccess & (FILE_WRITE_DATA |
FILE_READ_DATA)))
+ {
+ DPRINT1("Invalid access rights\n");
+ ObDereferenceObject(FileObject);
+ return STATUS_ACCESS_DENIED;
+ }
+
+ _SEH_TRY
+ {
+ ProbeForWrite(IoStatusBlock,
+ sizeof(IO_STATUS_BLOCK),
+ sizeof(ULONG));
+ CapturedByteOffset = ProbeForReadLargeInteger(ByteOffset);
+ CapturedLength = ProbeForReadLargeInteger(Length);
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status))
+ {
+ ObDereferenceObject(FileObject);
+ return Status;
+ }
}
+ else
+ {
+ CapturedByteOffset = *ByteOffset;
+ CapturedLength = *Length;
+ }
/* Get Event Object */
if (EventHandle)
@@ -2043,7 +2164,7 @@
ObDereferenceObject(FileObject);
return STATUS_INSUFFICIENT_RESOURCES;
}
- *LocalLength = *Length;
+ *LocalLength = CapturedLength;
/* Set up the IRP */
Irp->RequestorMode = PreviousMode;
@@ -2060,8 +2181,8 @@
/* Set Parameters */
StackPtr->Parameters.LockControl.Length = LocalLength;
- StackPtr->Parameters.LockControl.ByteOffset = *ByteOffset;
- StackPtr->Parameters.LockControl.Key = Key ? Key : 0;
+ StackPtr->Parameters.LockControl.ByteOffset = CapturedByteOffset;
+ StackPtr->Parameters.LockControl.Key = Key;
/* Set Flags */
if (FailImmediately) StackPtr->Flags = SL_FAIL_IMMEDIATELY;
@@ -2709,7 +2830,7 @@
OUT PIO_STATUS_BLOCK IoStatusBlock,
OUT PVOID Buffer,
IN ULONG Length,
- IN PLARGE_INTEGER ByteOffset OPTIONAL, /* NOT optional for
asynch. operations! */
+ IN PLARGE_INTEGER ByteOffset OPTIONAL,
IN PULONG Key OPTIONAL)
{
NTSTATUS Status = STATUS_SUCCESS;
@@ -2717,14 +2838,19 @@
PIRP Irp = NULL;
PDEVICE_OBJECT DeviceObject;
PIO_STACK_LOCATION StackPtr;
- KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
+ KPROCESSOR_MODE PreviousMode;
BOOLEAN LocalEvent = FALSE;
PKEVENT EventObject = NULL;
+ LARGE_INTEGER CapturedByteOffset;
DPRINT("NtReadFile(FileHandle 0x%p Buffer 0x%p Length %x ByteOffset
0x%p, "
"IoStatusBlock 0x%p)\n", FileHandle, Buffer, Length,
ByteOffset,
IoStatusBlock);
+
PAGED_CODE();
+
+ PreviousMode = KeGetPreviousMode();
+ CapturedByteOffset.QuadPart = 0;
/* Validate User-Mode Buffers */
if(PreviousMode != KernelMode)
@@ -2734,11 +2860,14 @@
ProbeForWrite(IoStatusBlock,
sizeof(IO_STATUS_BLOCK),
sizeof(ULONG));
- #if 0
ProbeForWrite(Buffer,
Length,
- sizeof(ULONG));
- #endif
+ 1);
+ if (ByteOffset != NULL)
+ {
+ CapturedByteOffset =
ProbeForReadLargeInteger(ByteOffset);
+ }
+ /* FIXME - probe other pointers and capture information */
}
_SEH_HANDLE
{
@@ -2748,6 +2877,13 @@
if(!NT_SUCCESS(Status)) return Status;
}
+ else
+ {
+ if (ByteOffset != NULL)
+ {
+ CapturedByteOffset = *ByteOffset;
+ }
+ }
/* Get File Object */
Status = ObReferenceObjectByHandle(FileHandle,
@@ -2759,9 +2895,9 @@
if (!NT_SUCCESS(Status)) return Status;
/* Check the Byte Offset */
- if (!ByteOffset ||
- (ByteOffset->u.LowPart == FILE_USE_FILE_POINTER_POSITION &&
- ByteOffset->u.HighPart == -1))
+ if (ByteOffset == NULL ||
+ (CapturedByteOffset.u.LowPart == FILE_USE_FILE_POINTER_POSITION
&&
+ CapturedByteOffset.u.HighPart == -1))
{
/* a valid ByteOffset is required if asynch. op. */
if (!(FileObject->Flags & FO_SYNCHRONOUS_IO))
@@ -2772,7 +2908,7 @@
}
/* Use the Current Byte OFfset */
- ByteOffset = &FileObject->CurrentByteOffset;
+ CapturedByteOffset = FileObject->CurrentByteOffset;
}
/* Check for event */
@@ -2821,7 +2957,7 @@
DeviceObject,
Buffer,
Length,
- ByteOffset,
+ &CapturedByteOffset,
EventObject,
IoStatusBlock);
if (Irp == NULL)
@@ -3276,7 +3412,7 @@
OUT PIO_STATUS_BLOCK IoStatusBlock,
IN PLARGE_INTEGER ByteOffset,
IN PLARGE_INTEGER Length,
- OUT ULONG Key OPTIONAL)
+ IN ULONG Key OPTIONAL)
{
PFILE_OBJECT FileObject = NULL;
PLARGE_INTEGER LocalLength = NULL;
@@ -3285,13 +3421,18 @@
PDEVICE_OBJECT DeviceObject;
KEVENT Event;
BOOLEAN LocalEvent = FALSE;
- KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
+ KPROCESSOR_MODE PreviousMode;
NTSTATUS Status = STATUS_SUCCESS;
+ LARGE_INTEGER CapturedByteOffset, CapturedLength;
OBJECT_HANDLE_INFORMATION HandleInformation;
-
- /* FIXME: instead of this, use SEH */
- if (!Length || !ByteOffset) return STATUS_INVALID_PARAMETER;
+ PAGED_CODE();
+
+ PreviousMode = KeGetPreviousMode();
+
+ CapturedByteOffset.QuadPart = 0;
+ CapturedLength.QuadPart = 0;
+
/* Get File Object */
Status = ObReferenceObjectByHandle(FileHandle,
0,
@@ -3301,13 +3442,42 @@
&HandleInformation);
if (!NT_SUCCESS(Status)) return Status;
- /* Must have FILE_READ_DATA | FILE_WRITE_DATA access */
- if (!(HandleInformation.GrantedAccess & (FILE_WRITE_DATA |
FILE_READ_DATA)))
+ if (PreviousMode != KernelMode)
{
- DPRINT1("Invalid access rights\n");
- ObDereferenceObject(FileObject);
- return STATUS_ACCESS_DENIED;
+ /* Must have either FILE_READ_DATA or FILE_WRITE_DATA access
unless we're
+ in KernelMode! */
+ if (!(HandleInformation.GrantedAccess & (FILE_WRITE_DATA |
FILE_READ_DATA)))
+ {
+ DPRINT1("Invalid access rights\n");
+ ObDereferenceObject(FileObject);
+ return STATUS_ACCESS_DENIED;
+ }
+
+ _SEH_TRY
+ {
+ ProbeForWrite(IoStatusBlock,
+ sizeof(IO_STATUS_BLOCK),
+ sizeof(ULONG));
+ CapturedByteOffset = ProbeForReadLargeInteger(ByteOffset);
+ CapturedLength = ProbeForReadLargeInteger(Length);
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status))
+ {
+ ObDereferenceObject(FileObject);
+ return Status;
+ }
}
+ else
+ {
+ CapturedByteOffset = *ByteOffset;
+ CapturedLength = *Length;
+ }
/* Check if this is a direct open or not */
if (FileObject->Flags & FO_DIRECT_DEVICE_OPEN)
@@ -3349,7 +3519,7 @@
ObDereferenceObject(FileObject);
return STATUS_INSUFFICIENT_RESOURCES;
}
- *LocalLength = *Length;
+ *LocalLength = CapturedLength;
/* Set up the IRP */
Irp->Flags = (LocalEvent) ? IRP_SYNCHRONOUS_API : 0;
@@ -3367,8 +3537,8 @@
/* Set Parameters */
StackPtr->Parameters.LockControl.Length = LocalLength;
- StackPtr->Parameters.LockControl.ByteOffset = *ByteOffset;
- StackPtr->Parameters.LockControl.Key = Key ? Key : 0;
+ StackPtr->Parameters.LockControl.ByteOffset = CapturedByteOffset;
+ StackPtr->Parameters.LockControl.Key = Key;
/* Call the Driver */
Status = IoCallDriver(DeviceObject, Irp);
@@ -3424,34 +3594,49 @@
IN PLARGE_INTEGER ByteOffset OPTIONAL, /* NOT optional for
asynch. operations! */
IN PULONG Key OPTIONAL)
{
- OBJECT_HANDLE_INFORMATION HandleInformation;
+ OBJECT_HANDLE_INFORMATION ObjectHandleInfo;
NTSTATUS Status = STATUS_SUCCESS;
PFILE_OBJECT FileObject;
PIRP Irp = NULL;
PDEVICE_OBJECT DeviceObject;
PIO_STACK_LOCATION StackPtr;
- KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
+ KPROCESSOR_MODE PreviousMode;
BOOLEAN LocalEvent = FALSE;
PKEVENT EventObject = NULL;
+ LARGE_INTEGER CapturedByteOffset;
+ ULONG CapturedKey = 0;
+ ACCESS_MASK DesiredAccess = FILE_WRITE_DATA;
DPRINT("NtWriteFile(FileHandle 0x%p Buffer 0x%p Length %x
ByteOffset 0x%p, "
"IoStatusBlock 0x%p)\n", FileHandle, Buffer, Length,
ByteOffset,
IoStatusBlock);
+ PAGED_CODE();
+
+ PreviousMode = KeGetPreviousMode();
+ CapturedByteOffset.QuadPart = 0;
+
/* Validate User-Mode Buffers */
if(PreviousMode != KernelMode)
{
_SEH_TRY
{
- #if 0
ProbeForWrite(IoStatusBlock,
sizeof(IO_STATUS_BLOCK),
sizeof(ULONG));
ProbeForRead(Buffer,
Length,
- sizeof(ULONG));
- #endif
+ 1);
+ if (ByteOffset != NULL)
+ {
+ CapturedByteOffset =
ProbeForReadLargeInteger(ByteOffset);
+ }
+
+ if (Key != NULL)
+ {
+ CapturedKey = ProbeForReadUlong(Key);
+ }
}
_SEH_HANDLE
{
@@ -3461,6 +3646,17 @@
if(!NT_SUCCESS(Status)) return Status;
}
+ else
+ {
+ if (ByteOffset != NULL)
+ {
+ CapturedByteOffset = *ByteOffset;
+ }
+ if (Key != NULL)
+ {
+ CapturedKey = *Key;
+ }
+ }
/* Get File Object */
Status = ObReferenceObjectByHandle(FileHandle,
@@ -3468,24 +3664,29 @@
IoFileObjectType,
PreviousMode,
(PVOID*)&FileObject,
- &HandleInformation);
+ &ObjectHandleInfo);
if (!NT_SUCCESS(Status)) return Status;
- /* Must have FILE_WRITE_DATA | FILE_APPEND_DATA access */
- if (!(HandleInformation.GrantedAccess & (FILE_WRITE_DATA |
FILE_APPEND_DATA)))
+ /* check if the handle has either FILE_WRITE_DATA or
FILE_APPEND_DATA was
+ granted. However, if this is a named pipe, make sure we don't
ask for
+ FILE_APPEND_DATA as it interferes with the
FILE_CREATE_PIPE_INSTANCE
+ access right! */
+ if (!(FileObject->Flags & FO_NAMED_PIPE))
+ DesiredAccess |= FILE_APPEND_DATA;
+ if (!RtlAreAnyAccessesGranted(ObjectHandleInfo.GrantedAccess,
+ DesiredAccess))
{
- DPRINT1("Invalid access rights\n");
ObDereferenceObject(FileObject);
return STATUS_ACCESS_DENIED;
}
/* Check if we got write Access */
- if (HandleInformation.GrantedAccess & FILE_WRITE_DATA)
+ if (ObjectHandleInfo.GrantedAccess & FILE_WRITE_DATA)
{
/* Check the Byte Offset */
- if (!ByteOffset ||
- (ByteOffset->u.LowPart == FILE_USE_FILE_POINTER_POSITION &&
- ByteOffset->u.HighPart == -1))
+ if (ByteOffset == NULL ||
+ (CapturedByteOffset.u.LowPart ==
FILE_USE_FILE_POINTER_POSITION &&
+ CapturedByteOffset.u.HighPart == -1))
{
/* a valid ByteOffset is required if asynch. op. */
if (!(FileObject->Flags & FO_SYNCHRONOUS_IO))
@@ -3496,10 +3697,11 @@
}
/* Use the Current Byte OFfset */
- ByteOffset = &FileObject->CurrentByteOffset;
+ CapturedByteOffset = FileObject->CurrentByteOffset;
}
}
- else if (HandleInformation.GrantedAccess & FILE_APPEND_DATA)
+ else if ((ObjectHandleInfo.GrantedAccess & FILE_APPEND_DATA) &&
+ !(FileObject->Flags & FO_NAMED_PIPE))
{
/* a valid ByteOffset is required if asynch. op. */
if (!(FileObject->Flags & FO_SYNCHRONOUS_IO))
@@ -3510,8 +3712,8 @@
}
/* Give the drivers somethign to understand */
- ByteOffset->u.LowPart = FILE_WRITE_TO_END_OF_FILE;
- ByteOffset->u.HighPart = 0xffffffff;
+ CapturedByteOffset.u.LowPart = FILE_WRITE_TO_END_OF_FILE;
+ CapturedByteOffset.u.HighPart = 0xffffffff;
}
/* Check if we got an event */
@@ -3560,7 +3762,7 @@
DeviceObject,
Buffer,
Length,
- ByteOffset,
+ &CapturedByteOffset,
EventObject,
IoStatusBlock);
if (Irp == NULL)
@@ -3601,7 +3803,7 @@
/* Setup Stack Data */
StackPtr = IoGetNextIrpStackLocation(Irp);
StackPtr->FileObject = FileObject;
- StackPtr->Parameters.Write.Key = Key ? *Key : 0;
+ StackPtr->Parameters.Write.Key = CapturedKey;
if (FileObject->Flags & FO_WRITE_THROUGH) StackPtr->Flags =
SL_WRITE_THROUGH;
/* Call the Driver */
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