[gedmurphy] 70488: [FLTMGR] - Plug in the dispatch routines. These are just pass through methods for now to get the filter up and running. - Implement the FastIo handlers. The majority of these cal...
4 Jan
2016
4 Jan
'16
12:50 p.m.
Author: gedmurphy
Date: Mon Jan 4 12:50:06 2016
New Revision: 70488
URL: http://svn.reactos.org/svn/reactos?rev=70488&view=rev
Log:
[FLTMGR]
- Plug in the dispatch routines. These are just pass through methods for now to get the
filter up and running.
- Implement the FastIo handlers. The majority of these call the FastIo routines of the
attached device object.
- Make sure we detach from devices that are being deleted in FastIoDetachDevice.
- Move the FastIoDetachDevice routine to a deferred call as it's too expensive to tie
up a FastIo request.
Modified:
trunk/reactos/drivers/fs_minifilter/fltmgr/Interface.c
Modified: trunk/reactos/drivers/fs_minifilter/fltmgr/Interface.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/fs_minifilter/fltm…
==============================================================================
--- trunk/reactos/drivers/fs_minifilter/fltmgr/Interface.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/fs_minifilter/fltmgr/Interface.c [iso-8859-1] Mon Jan 4
12:50:06 2016
@@ -36,6 +36,12 @@
_In_ PDEVICE_OBJECT SourceDevice,
_In_ PDEVICE_OBJECT Targetevice,
_Out_ PDEVICE_OBJECT *AttachedToDeviceObject
+);
+
+static
+VOID
+FltpCleanupDeviceObject(
+ _In_ PDEVICE_OBJECT DeviceObject
);
static
@@ -94,8 +100,6 @@
/* The file system we're attached to */
PDEVICE_OBJECT AttachedToDeviceObject;
- // Pointer to the real (disk) device object that is associated with
- // the file system device object we are attached to
/* The storage stack(disk) accociated with the file system device object we're
attached to */
PDEVICE_OBJECT StorageStackDeviceObject;
@@ -106,7 +110,13 @@
} FLTMGR_DEVICE_EXTENSION, *PFLTMGR_DEVICE_EXTENSION;
-
+typedef struct _DETATCH_DEVICE_WORK_ITEM
+{
+ WORK_QUEUE_ITEM WorkItem;
+ PDEVICE_OBJECT SourceDevice;
+ PDEVICE_OBJECT TargetDevice;
+
+} DETATCH_DEVICE_WORK_ITEM, *PDETATCH_DEVICE_WORK_ITEM;
/* DISPATCH ROUTINES **********************************************/
@@ -139,10 +149,15 @@
FltpDispatch(_In_ PDEVICE_OBJECT DeviceObject,
_Inout_ PIRP Irp)
{
- UNREFERENCED_PARAMETER(DeviceObject);
- UNREFERENCED_PARAMETER(Irp);
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ DeviceExtension = DeviceObject->DeviceExtension;
__debugbreak();
- return STATUS_SUCCESS;
+ FLT_ASSERT(DeviceExtension &&
+ DeviceExtension->AttachedToDeviceObject);
+
+ /* Just pass the IRP down the stack */
+ IoSkipCurrentIrpStackLocation(Irp);
+ return IoCallDriver(DeviceExtension->AttachedToDeviceObject, Irp);
}
NTSTATUS
@@ -150,10 +165,15 @@
FltpCreate(_In_ PDEVICE_OBJECT DeviceObject,
_Inout_ PIRP Irp)
{
- UNREFERENCED_PARAMETER(DeviceObject);
- UNREFERENCED_PARAMETER(Irp);
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ DeviceExtension = DeviceObject->DeviceExtension;
__debugbreak();
- return STATUS_SUCCESS;
+ FLT_ASSERT(DeviceExtension &&
+ DeviceExtension->AttachedToDeviceObject);
+
+ /* Just pass the IRP down the stack */
+ IoSkipCurrentIrpStackLocation(Irp);
+ return IoCallDriver(DeviceExtension->AttachedToDeviceObject, Irp);
}
NTSTATUS
@@ -161,16 +181,1025 @@
FltpFsControl(_In_ PDEVICE_OBJECT DeviceObject,
_Inout_ PIRP Irp)
{
- UNREFERENCED_PARAMETER(DeviceObject);
- UNREFERENCED_PARAMETER(Irp);
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ DeviceExtension = DeviceObject->DeviceExtension;
__debugbreak();
- return STATUS_SUCCESS;
+ FLT_ASSERT(DeviceExtension &&
+ DeviceExtension->AttachedToDeviceObject);
+ /* Just pass the IRP down the stack */
+ IoSkipCurrentIrpStackLocation(Irp);
+ return IoCallDriver(DeviceExtension->AttachedToDeviceObject, Irp);
+}
+
+
+
+/* FASTIO ROUTINES ************************************************/
+
+BOOLEAN
+FltpFastIoCheckIfPossible(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ ULONG Length,
+ _In_ BOOLEAN Wait,
+ _In_ ULONG LockKey,
+ _In_ BOOLEAN CheckForReadOperation,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoCheckIfPossible)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoCheckIfPossible(FileObject,
+ FileOffset,
+ Length,
+ Wait,
+ LockKey,
+ CheckForReadOperation,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoRead(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ ULONG Length,
+ _In_ BOOLEAN Wait,
+ _In_ ULONG LockKey,
+ _Out_ PVOID Buffer,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoRead)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoRead(FileObject,
+ FileOffset,
+ Length,
+ Wait,
+ LockKey,
+ Buffer,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoWrite(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ ULONG Length,
+ _In_ BOOLEAN Wait,
+ _In_ ULONG LockKey,
+ _In_ PVOID Buffer,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoWrite)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoWrite(FileObject,
+ FileOffset,
+ Length,
+ Wait,
+ LockKey,
+ Buffer,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoQueryBasicInfo(_In_ PFILE_OBJECT FileObject,
+ _In_ BOOLEAN Wait,
+ _Out_ PFILE_BASIC_INFORMATION Buffer,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoQueryBasicInfo)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoQueryBasicInfo(FileObject,
+ Wait,
+ Buffer,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoQueryStandardInfo(_In_ PFILE_OBJECT FileObject,
+ _In_ BOOLEAN Wait,
+ _Out_ PFILE_STANDARD_INFORMATION Buffer,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoQueryStandardInfo)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoQueryStandardInfo(FileObject,
+ Wait,
+ Buffer,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoLock(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ PLARGE_INTEGER Length,
+ _In_ PEPROCESS ProcessId,
+ _In_ ULONG Key,
+ _In_ BOOLEAN FailImmediately,
+ _In_ BOOLEAN ExclusiveLock,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoLock)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoLock(FileObject,
+ FileOffset,
+ Length,
+ ProcessId,
+ Key,
+ FailImmediately,
+ ExclusiveLock,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoUnlockSingle(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ PLARGE_INTEGER Length,
+ _In_ PEPROCESS ProcessId,
+ _In_ ULONG Key,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoUnlockSingle)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoUnlockSingle(FileObject,
+ FileOffset,
+ Length,
+ ProcessId,
+ Key,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoUnlockAll(_In_ PFILE_OBJECT FileObject,
+ _In_ PEPROCESS ProcessId,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoUnlockAll)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoUnlockAll(FileObject,
+ ProcessId,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoUnlockAllByKey(_In_ PFILE_OBJECT FileObject,
+ _In_ PVOID ProcessId,
+ _In_ ULONG Key,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoUnlockAllByKey)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoUnlockAllByKey(FileObject,
+ ProcessId,
+ Key,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoDeviceControl(_In_ PFILE_OBJECT FileObject,
+ _In_ BOOLEAN Wait,
+ _In_opt_ PVOID InputBuffer,
+ _In_ ULONG InputBufferLength,
+ _Out_opt_ PVOID OutputBuffer,
+ _In_ ULONG OutputBufferLength,
+ _In_ ULONG IoControlCode,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the request, send it down the slow path */
+ return FALSE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoDeviceControl)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoDeviceControl(FileObject,
+ Wait,
+ InputBuffer,
+ InputBufferLength,
+ OutputBuffer,
+ OutputBufferLength,
+ IoControlCode,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+VOID
+NTAPI
+FltpFastIoDetatchDeviceWorker(_In_ PVOID Parameter)
+{
+ PDETATCH_DEVICE_WORK_ITEM DetatchDeviceWorkItem = Parameter;
+
+ /* Run any cleanup routines */
+ FltpCleanupDeviceObject(DetatchDeviceWorkItem->SourceDevice);
+
+ /* Detatch from the target device */
+ IoDetachDevice(DetatchDeviceWorkItem->TargetDevice);
+
+ /* Delete the source */
+ IoDeleteDevice(DetatchDeviceWorkItem->SourceDevice);
+
+ /* Free the pool we allocated in FltpFastIoDetachDevice */
+ ExFreePoolWithTag(DetatchDeviceWorkItem, 0x1234);
+}
+
+VOID
+FltpFastIoDetachDevice(_In_ PDEVICE_OBJECT SourceDevice,
+ _In_ PDEVICE_OBJECT TargetDevice)
+{
+ PDETATCH_DEVICE_WORK_ITEM DetatchDeviceWorkItem;
+
+ PAGED_CODE();
+
+ /*
+ * Detatching and deleting devices is a lot of work and takes too long
+ * to be a worthwhile FastIo candidate, so we defer this call to speed
+ * it up. There's no return value so we're okay to do this.
+ */
+
+ /* Allocate the work item and it's corresponding data */
+ DetatchDeviceWorkItem = ExAllocatePoolWithTag(NonPagedPool,
+ sizeof(DETATCH_DEVICE_WORK_ITEM),
+ 0x1234);
+ if (DetatchDeviceWorkItem)
+ {
+ /* Initialize the work item */
+ ExInitializeWorkItem(&DetatchDeviceWorkItem->WorkItem,
+ FltpFastIoDetatchDeviceWorker,
+ DetatchDeviceWorkItem);
+
+ /* Queue the work item and return the call */
+ ExQueueWorkItem(&DetatchDeviceWorkItem->WorkItem,
+ DelayedWorkQueue);
+ }
+ else
+ {
+ /* We failed to defer, just cleanup here */
+ FltpCleanupDeviceObject(SourceDevice);
+ IoDetachDevice(TargetDevice);
+ IoDeleteDevice(SourceDevice);
+ }
+
+}
+
+BOOLEAN
+FltpFastIoQueryNetworkOpenInfo(_In_ PFILE_OBJECT FileObject,
+ _In_ BOOLEAN Wait,
+ _Out_ PFILE_NETWORK_OPEN_INFORMATION Buffer,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoQueryNetworkOpenInfo)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoQueryNetworkOpenInfo(FileObject,
+ Wait,
+ Buffer,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoMdlRead(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ ULONG Length,
+ _In_ ULONG LockKey,
+ _Out_ PMDL *MdlChain,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->MdlRead)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->MdlRead(FileObject,
+ FileOffset,
+ Length,
+ LockKey,
+ MdlChain,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoMdlReadComplete(_In_ PFILE_OBJECT FileObject,
+ _In_ PMDL MdlChain,
+ _In_ PDEVICE_OBJECT DeviceObject)
+
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the request, send it down the slow path */
+ return FALSE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->MdlReadComplete)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->MdlReadComplete(FileObject,
+ MdlChain,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoPrepareMdlWrite(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ ULONG Length,
+ _In_ ULONG LockKey,
+ _Out_ PMDL *MdlChain,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the call */
+ IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
+ IoStatus->Information = 0;
+ return TRUE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->PrepareMdlWrite)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->PrepareMdlWrite(FileObject,
+ FileOffset,
+ Length,
+ LockKey,
+ MdlChain,
+ IoStatus,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoMdlWriteComplete(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ PMDL MdlChain,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the request, send it down the slow path */
+ return FALSE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->MdlWriteComplete)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->MdlWriteComplete(FileObject,
+ FileOffset,
+ MdlChain,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoReadCompressed(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ ULONG Length,
+ _In_ ULONG LockKey,
+ _Out_ PVOID Buffer,
+ _Out_ PMDL *MdlChain,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _Out_ PCOMPRESSED_DATA_INFO CompressedDataInfo,
+ _In_ ULONG CompressedDataInfoLength,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the request, send it down the slow path */
+ return FALSE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoReadCompressed)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoReadCompressed(FileObject,
+ FileOffset,
+ Length,
+ LockKey,
+ Buffer,
+ MdlChain,
+ IoStatus,
+ CompressedDataInfo,
+ CompressedDataInfoLength,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoWriteCompressed(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ ULONG Length,
+ _In_ ULONG LockKey,
+ _In_ PVOID Buffer,
+ _Out_ PMDL *MdlChain,
+ _Out_ PIO_STATUS_BLOCK IoStatus,
+ _In_ PCOMPRESSED_DATA_INFO CompressedDataInfo,
+ _In_ ULONG CompressedDataInfoLength,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ /* Fail the request, send it down the slow path */
+ return FALSE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoWriteCompressed)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->FastIoWriteCompressed(FileObject,
+ FileOffset,
+ Length,
+ LockKey,
+ Buffer,
+ MdlChain,
+ IoStatus,
+ CompressedDataInfo,
+ CompressedDataInfoLength,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoMdlReadCompleteCompressed(_In_ PFILE_OBJECT FileObject,
+ _In_ PMDL MdlChain,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ return FALSE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->MdlReadCompleteCompressed)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->MdlReadCompleteCompressed(FileObject,
+ MdlChain,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoMdlWriteCompleteCompressed(_In_ PFILE_OBJECT FileObject,
+ _In_ PLARGE_INTEGER FileOffset,
+ _In_ PMDL MdlChain,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ return FALSE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->MdlWriteCompleteCompressed)
+ {
+ /* Forward the call onto the device we attached to */
+ return FastIoDispatch->MdlWriteCompleteCompressed(FileObject,
+ FileOffset,
+ MdlChain,
+ AttachedDeviceObject);
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
+}
+
+BOOLEAN
+FltpFastIoQueryOpen(_Inout_ PIRP Irp,
+ _Out_ PFILE_NETWORK_OPEN_INFORMATION NetworkInformation,
+ _In_ PDEVICE_OBJECT DeviceObject)
+{
+ PFLTMGR_DEVICE_EXTENSION DeviceExtension;
+ PDEVICE_OBJECT AttachedDeviceObject;
+ PFAST_IO_DISPATCH FastIoDispatch;
+ BOOLEAN Success;
+
+ PAGED_CODE();
+
+ /* If it doesn't have a device extension, then it's not our device object */
+ if (DeviceObject->DeviceExtension == NULL)
+ {
+ return FALSE;
+ }
+
+ DeviceExtension = DeviceObject->DeviceExtension;
+ FLT_ASSERT(DeviceExtension->AttachedToDeviceObject);
+
+ /* Get the device that we attached to */
+ AttachedDeviceObject = DeviceExtension->AttachedToDeviceObject;
+ FastIoDispatch = AttachedDeviceObject->DriverObject->FastIoDispatch;
+
+ /* Make sure our FastIo table is valid */
+ if (FastIoDispatch && FastIoDispatch->FastIoQueryOpen)
+ {
+ PIO_STACK_LOCATION StackPtr = IoGetCurrentIrpStackLocation(Irp);
+
+ /* Update the stack to contain the correct device for the next filter */
+ StackPtr->DeviceObject = AttachedDeviceObject;
+
+ /* Now forward the call */
+ Success = FastIoDispatch->FastIoQueryOpen(Irp,
+ NetworkInformation,
+ AttachedDeviceObject);
+
+ /* Restore the DeviceObject as we found it */
+ StackPtr->DeviceObject = DeviceObject;
+ return Success;
+ }
+
+ /* We failed to handle the request, send it down the slow path */
+ FLT_ASSERT(FALSE);
+ return FALSE;
}
/* FUNCTIONS **********************************************/
+static
VOID
FltpCleanupDeviceObject(_In_ PDEVICE_OBJECT DeviceObject)
{
@@ -555,7 +1584,8 @@
AttachedDevice = IoGetAttachedDeviceReference(DeviceObject);
/* Loop through all attached devices until we reach the bottom (file system driver)
*/
- while (AttachedDevice->DriverObject != DriverData.DriverObject)
+ while (AttachedDevice == NULL ||
+ AttachedDevice->DriverObject != DriverData.DriverObject)
{
/* Get the attached device */
LowestDevice = IoGetLowerDeviceObject(AttachedDevice);
@@ -682,7 +1712,7 @@
/* Register for notifications when a new file system is loaded. This also enumerates
any existing file systems */
Status = IoRegisterFsRegistrationChange(DriverObject, FltpFsNotification);
- FLT_ASSERT(Status != STATUS_DEVICE_ALREADY_ATTACHED); // Windows checks for this, but
I'm not sure how that can happen??
+ FLT_ASSERT(Status != STATUS_DEVICE_ALREADY_ATTACHED); // Windows checks for this,
I'm not sure how it can happen. Needs investigation??
if (!NT_SUCCESS(Status)) goto Cleanup;
/* IoRegisterFsRegistrationChange isn't notified about the raw file systems, so
we attach to them manually */
@@ -762,29 +1792,30 @@
/* Fill out the FastIo table */
RtlZeroMemory(FastIoDispatch, sizeof(FAST_IO_DISPATCH));
FastIoDispatch->SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
- FastIoDispatch->FastIoCheckIfPossible = (PFAST_IO_CHECK_IF_POSSIBLE)NULL;
- FastIoDispatch->FastIoRead = (PFAST_IO_READ)NULL;
- FastIoDispatch->FastIoWrite = (PFAST_IO_WRITE)NULL;
- FastIoDispatch->FastIoQueryBasicInfo = (PFAST_IO_QUERY_BASIC_INFO)NULL;
- FastIoDispatch->FastIoQueryStandardInfo = (PFAST_IO_QUERY_STANDARD_INFO)NULL;
- FastIoDispatch->FastIoLock = (PFAST_IO_LOCK)NULL;
- FastIoDispatch->FastIoUnlockSingle = (PFAST_IO_UNLOCK_SINGLE)NULL;
- FastIoDispatch->FastIoUnlockAll = (PFAST_IO_UNLOCK_ALL)NULL;
- FastIoDispatch->FastIoUnlockAllByKey = (PFAST_IO_UNLOCK_ALL_BY_KEY)NULL;
- FastIoDispatch->FastIoDeviceControl = (PFAST_IO_DEVICE_CONTROL)NULL;
- FastIoDispatch->FastIoDetachDevice = (PFAST_IO_DETACH_DEVICE)NULL;
- FastIoDispatch->FastIoQueryNetworkOpenInfo =
(PFAST_IO_QUERY_NETWORK_OPEN_INFO)NULL;
- FastIoDispatch->MdlRead = (PFAST_IO_MDL_READ)NULL;
- FastIoDispatch->MdlReadComplete = (PFAST_IO_MDL_READ_COMPLETE)NULL;
- FastIoDispatch->PrepareMdlWrite = (PFAST_IO_PREPARE_MDL_WRITE)NULL;
- FastIoDispatch->MdlWriteComplete = (PFAST_IO_MDL_WRITE_COMPLETE)NULL;
- FastIoDispatch->FastIoReadCompressed = (PFAST_IO_READ_COMPRESSED)NULL;
- FastIoDispatch->FastIoWriteCompressed = (PFAST_IO_WRITE_COMPRESSED)NULL;
- FastIoDispatch->MdlReadCompleteCompressed =
(PFAST_IO_MDL_READ_COMPLETE_COMPRESSED)NULL;
- FastIoDispatch->MdlWriteCompleteCompressed =
(PFAST_IO_MDL_WRITE_COMPLETE_COMPRESSED)NULL;
- FastIoDispatch->FastIoQueryOpen = (PFAST_IO_QUERY_OPEN)NULL;
-
- /* Store the FastIo table address for easy reference */
+ FastIoDispatch->FastIoCheckIfPossible =
(PFAST_IO_CHECK_IF_POSSIBLE)FltpFastIoCheckIfPossible;
+ FastIoDispatch->FastIoRead = (PFAST_IO_READ)FltpFastIoRead;
+ FastIoDispatch->FastIoWrite = (PFAST_IO_WRITE)FltpFastIoWrite;
+ FastIoDispatch->FastIoQueryBasicInfo =
(PFAST_IO_QUERY_BASIC_INFO)FltpFastIoQueryBasicInfo;
+ FastIoDispatch->FastIoQueryStandardInfo =
(PFAST_IO_QUERY_STANDARD_INFO)FltpFastIoQueryStandardInfo;
+ FastIoDispatch->FastIoLock = (PFAST_IO_LOCK)FltpFastIoLock;
+ FastIoDispatch->FastIoUnlockSingle =
(PFAST_IO_UNLOCK_SINGLE)FltpFastIoUnlockSingle;
+ FastIoDispatch->FastIoUnlockAll = (PFAST_IO_UNLOCK_ALL)FltpFastIoUnlockAll;
+ FastIoDispatch->FastIoUnlockAllByKey =
(PFAST_IO_UNLOCK_ALL_BY_KEY)FltpFastIoUnlockAllByKey;
+ FastIoDispatch->FastIoDeviceControl =
(PFAST_IO_DEVICE_CONTROL)FltpFastIoDeviceControl;
+ FastIoDispatch->FastIoDetachDevice =
(PFAST_IO_DETACH_DEVICE)FltpFastIoDetachDevice;
+ FastIoDispatch->FastIoQueryNetworkOpenInfo =
(PFAST_IO_QUERY_NETWORK_OPEN_INFO)FltpFastIoQueryNetworkOpenInfo;
+ FastIoDispatch->MdlRead = (PFAST_IO_MDL_READ)FltpFastIoMdlRead;
+ FastIoDispatch->MdlReadComplete =
(PFAST_IO_MDL_READ_COMPLETE)FltpFastIoMdlReadComplete;
+ FastIoDispatch->PrepareMdlWrite =
(PFAST_IO_PREPARE_MDL_WRITE)FltpFastIoPrepareMdlWrite;
+ FastIoDispatch->MdlWriteComplete =
(PFAST_IO_MDL_WRITE_COMPLETE)FltpFastIoMdlWriteComplete;
+ FastIoDispatch->FastIoReadCompressed =
(PFAST_IO_READ_COMPRESSED)FltpFastIoReadCompressed;
+ FastIoDispatch->FastIoWriteCompressed =
(PFAST_IO_WRITE_COMPRESSED)FltpFastIoWriteCompressed;
+ FastIoDispatch->MdlReadCompleteCompressed =
(PFAST_IO_MDL_READ_COMPLETE_COMPRESSED)FltpFastIoMdlReadCompleteCompressed;
+ FastIoDispatch->MdlWriteCompleteCompressed =
(PFAST_IO_MDL_WRITE_COMPLETE_COMPRESSED)FltpFastIoMdlWriteCompleteCompressed;
+ FastIoDispatch->FastIoQueryOpen = (PFAST_IO_QUERY_OPEN)FltpFastIoQueryOpen;
+
+ /* Store the FastIo table for internal and our access */
+ DriverObject->FastIoDispatch = FastIoDispatch;
DriverData.FastIoDispatch = FastIoDispatch;
/* Initialize the callback table */
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gedmurphy＠svn.reactos.org