84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
//
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// addDevice.c
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//
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#include "pch.h"
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NTSTATUS
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P5AddDevice(
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT Pdo
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)
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/*++
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Routine Description:
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This is the WDM AddDevice routine for parport devices.
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Arguments:
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DriverObject - Driver Object
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Pdo - PDO
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Return Value:
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STATUS_SUCCESS - on SUCCESS
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Error Status - otherwise
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--*/
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{
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NTSTATUS status = STATUS_SUCCESS;
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PDEVICE_OBJECT fdo = NULL;
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PDEVICE_OBJECT lowerDevObj = NULL;
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PFDO_EXTENSION fdx = NULL;
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BOOLEAN haveDeviceInterface = FALSE;
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__try {
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fdo = PptBuildFdo( DriverObject, Pdo );
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if( !fdo ) {
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status = STATUS_UNSUCCESSFUL;
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__leave;
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}
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fdx = fdo->DeviceExtension;
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status = IoRegisterDeviceInterface( Pdo, &GUID_PARALLEL_DEVICE, NULL, &fdx->DeviceInterface);
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if( status != STATUS_SUCCESS ) {
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__leave;
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}
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haveDeviceInterface = TRUE;
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lowerDevObj = IoAttachDeviceToDeviceStack( fdo, Pdo );
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if( !lowerDevObj ) {
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status = STATUS_UNSUCCESSFUL;
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__leave;
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}
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fdx->ParentDeviceObject = lowerDevObj;
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KeInitializeEvent( &fdx->FdoThreadEvent, NotificationEvent, FALSE );
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// legacy drivers may use this count
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IoGetConfigurationInformation()->ParallelCount++;
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// done initializing - tell IO system we are ready to receive IRPs
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fdo->Flags &= ~DO_DEVICE_INITIALIZING;
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DD((PCE)fdx,DDT,"P5AddDevice - SUCCESS\n");
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}
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__finally {
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if( status != STATUS_SUCCESS ) {
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if( haveDeviceInterface ) {
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RtlFreeUnicodeString( &fdx->DeviceInterface );
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}
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if( fdo ) {
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IoDeleteDevice( fdo );
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}
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}
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}
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return status;
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}
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