VOID
EvtDeviceCleanup(
_In_ WDFOBJECT Object
)
{
WDFDEVICE device = (WDFDEVICE) Object;
PDEVICE_CONTEXT deviceContext = GetDeviceContext(device);
NTSTATUS status;
WDFKEY key = NULL;
UNICODE_STRING pdoString = {0};
DECLARE_CONST_UNICODE_STRING(deviceSubkey, SERIAL_DEVICE_MAP);
if (deviceContext->CreatedLegacyHardwareKey == TRUE) {
RtlInitUnicodeString(&pdoString, deviceContext->PdoName);
status = WdfDeviceOpenDevicemapKey(device,
&deviceSubkey,
KEY_SET_VALUE,
WDF_NO_OBJECT_ATTRIBUTES,
&key);
if (!NT_SUCCESS(status)) {
Trace(TRACE_LEVEL_ERROR,
"Error: Failed to open DEVICEMAP\\SERIALCOMM key 0x%x", status);
goto exit;
}
status = WdfRegistryRemoveValue(key,
&pdoString);
if (!NT_SUCCESS(status)) {
Trace(TRACE_LEVEL_ERROR,
"Error: Failed to delete %S key, 0x%x", pdoString.Buffer, status);
goto exit;
}
status = WdfRegistryRemoveKey(key);
if (!NT_SUCCESS(status)) {
Trace(TRACE_LEVEL_ERROR,
"Error: Failed to delete %S, 0x%x", SERIAL_DEVICE_MAP, status);
goto exit;
}
}
exit:
if (key != NULL) {
WdfRegistryClose(key);
key = NULL;
}
return;
}
//.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- DriverParametersKeyDelete -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
//
NTSTATUS DriverParametersKeyDelete(
WDFDRIVER Driver,
DtString* pKeyName)
{
NTSTATUS NtStatus;
WDFKEY ParametersKey;
WDFKEY Key = NULL;
DT_ASSERT(KeGetCurrentIrql()<=PASSIVE_LEVEL);
// Open the drivers parameters key (under services)
NtStatus = WdfDriverOpenParametersRegistryKey(Driver, KEY_WRITE,
WDF_NO_OBJECT_ATTRIBUTES, &ParametersKey);
if (!NT_SUCCESS(NtStatus))
{
DtDbgOut(ERR, SAL, "WdfDriverOpenParametersRegistryKey failed. Error: 0x%x",
NtStatus);
return NtStatus;
}
// Open subkey
NtStatus = WdfRegistryOpenKey(ParametersKey, pKeyName, KEY_WRITE,
WDF_NO_OBJECT_ATTRIBUTES, &Key);
if (!NT_SUCCESS(NtStatus))
{
if (NtStatus == STATUS_OBJECT_NAME_NOT_FOUND)
DtDbgOut(MAX, SAL, "WdfRegistryOpenKey error:'STATUS_OBJECT_NAME_NOT_FOUND'");
else
DtDbgOut(ERR, SAL, "WdfRegistryOpenKey failed. Error: 0x%x", NtStatus);
}
if (NT_SUCCESS(NtStatus))
{
// Delete the key
NtStatus = WdfRegistryRemoveKey(Key);
if (!NT_SUCCESS(NtStatus))
DtDbgOut(ERR, SAL, "WdfRegistryRemoveKey failed. Error: 0x%x", NtStatus);
else
Key = NULL;
}
if (Key != NULL)
WdfRegistryClose(Key);
WdfRegistryClose(ParametersKey);
return NtStatus;
}
