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134 lines
3.3 KiB
C
134 lines
3.3 KiB
C
/*++
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Copyright (C) Microsoft Corporation, 1991 - 2005
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Module Name:
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dispatch.c
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Abstract:
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Code to support multiple dispatch tables.
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Environment:
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kernel mode only
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Notes:
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Revision History:
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--*/
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#include "classp.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, ClassInitializeDispatchTables)
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#endif
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DRIVER_DISPATCH ClassDispatchUnimplemented;
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//
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// Routines start
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//
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VOID
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ClassInitializeDispatchTables(
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PCLASS_DRIVER_EXTENSION DriverExtension
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)
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{
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ULONG idx;
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PAGED_CODE();
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//
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// Initialize the standard device dispatch table
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//
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for (idx = 0; idx <= IRP_MJ_MAXIMUM_FUNCTION; idx++) {
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DriverExtension->DeviceMajorFunctionTable[idx] = ClassDispatchUnimplemented;
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}
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_CREATE] = ClassCreateClose;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_CLOSE] = ClassCreateClose;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_READ] = ClassReadWrite;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_WRITE] = ClassReadWrite;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_DEVICE_CONTROL] = ClassDeviceControlDispatch;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_SCSI] = ClassInternalIoControl;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_SHUTDOWN] = ClassShutdownFlush;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_FLUSH_BUFFERS] = ClassShutdownFlush;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_PNP] = ClassDispatchPnp;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_POWER] = ClassDispatchPower;
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DriverExtension->DeviceMajorFunctionTable[IRP_MJ_SYSTEM_CONTROL] = ClassSystemControl;
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return;
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}
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NTSTATUS
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NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
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ClassGlobalDispatch(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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{
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PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
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PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation(Irp);
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// Code Analysis cannot analyze the code paths specific to clients.
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_Analysis_assume_(FALSE);
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return (commonExtension->DispatchTable[irpStack->MajorFunction])(DeviceObject, Irp);
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}
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NTSTATUS
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NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
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ClassDispatchUnimplemented(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This function is the default dispatch routine. Its
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responsibility is simply to set the status in the packet to indicate
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that the operation requested is invalid for this device type, and then
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complete the packet.
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Arguments:
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DeviceObject - Specifies the device object for which this request is
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bound. Ignored by this routine.
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Irp - Specifies the address of the I/O Request Packet (IRP) for this
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request.
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Return Value:
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The final status is always STATUS_INVALID_DEVICE_REQUEST.
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--*/
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{
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UNREFERENCED_PARAMETER( DeviceObject );
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//
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// Simply store the appropriate status, complete the request, and return
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// the same status stored in the packet.
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//
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if ((IoGetCurrentIrpStackLocation(Irp))->MajorFunction == IRP_MJ_POWER) {
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PoStartNextPowerIrp(Irp);
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}
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Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
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IoCompleteRequest( Irp, IO_NO_INCREMENT );
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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