[wdmaudiodev] regedit does not show entries even though ZwCreateKey returns success
- From: Surabhi Ghaisas <ghaisas.surabhi@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Wed, 7 Mar 2012 09:03:16 +0530
Hi,
I am working on a wavert miniport driver . I need to register for Friendly
name and pull mode event notification from driver instead of inf. I have
written code below for the same. All the calls are returning status
success, but if i search for guid corresponding to pull mode or even the
friendly name i have registered in registry (opened with regedit) i am not
finding any entries. Same thing when done for inf, i see entries in
registry. Have i missed any setting in code below?
WCHAR PKEY_AudioEndpoint_Supports_EventDriven_Mode[] = L
"{1DA5D803-D492-4EDD-8C23-E0C0FFEE7F0E},7";
WCHAR PKEY_AudioEndpoint_Association[] = L
"{1DA5D803-D492-4EDD-8C23-E0C0FFEE7F0E},2";
RtlInitUnicodeString (&ValueName, L"CLSID");
RtlInitUnicodeString (&ValueName1, L"FriendlyName");
RtlInitUnicodeString (&ValueName2, PKEY_AudioEndpoint_Association);
RtlInitUnicodeString (&ValueName3,
PKEY_AudioEndpoint_Supports_EventDriven_Mode);
ntStatus = IoRegisterDeviceInterface(pSstPdo,
&KSCATEGORY_AUDIO,
&FriendlyName,
&ustrTopoAudio);
if(!NT_SUCCESS(ntStatus))
{
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "Failed to register topology miniport
under KSCATEGORY_AUDIO\n");
ASSERT(FALSE);
}
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "ustrTopoAudio %wZ\n",&ustrTopoAudio);
ntStatus = IoOpenDeviceInterfaceRegistryKey (&ustrTopoAudio,
KEY_ALL_ACCESS, &hKey);
if(!NT_SUCCESS(ntStatus))
{
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "IoOpenDeviceInterfaceRegistryKey failed
0x%x\n",ntStatus);
ASSERT(FALSE);
}
ntStatus = ZwSetValueKey (hKey, &ValueName, 0, REG_SZ, strCLSIDProxy,
sizeof(strCLSIDProxy));
if(!NT_SUCCESS(ntStatus))
{
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "ZwSetValueKey failed 0x%x\n",ntStatus);
ASSERT(FALSE);
}
ntStatus = ZwSetValueKey (hKey, &ValueName1, 0, REG_SZ,
FriendlyName.Buffer, FriendlyName.Length + sizeof(UNICODE_NULL));
if(!NT_SUCCESS(ntStatus))
{
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "ZwSetValueKey failed 0x%x\n",ntStatus);
ASSERT(FALSE);
}
RtlInitUnicodeString (&ObjectName, L"MSFEP");
InitializeObjectAttributes(&InitializedAttributes,
&ObjectName,
OBJ_OPENIF|OBJ_CASE_INSENSITIVE,
hKey,
NULL);
ntStatus = ZwCreateKey(&KeyHandle,
KEY_ALL_ACCESS,
&InitializedAttributes,
0,
NULL,
REG_OPTION_NON_VOLATILE,
&Disposition);
if(!NT_SUCCESS(ntStatus))
{
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "ZwCreateKey failed 0x%x\n",ntStatus);
ASSERT(FALSE);
}
RtlInitUnicodeString (&ObjectName1, L"0");
InitializeObjectAttributes(&InitializedAttributes,
&ObjectName1,
OBJ_OPENIF|OBJ_CASE_INSENSITIVE,
KeyHandle,
NULL);
ntStatus =ZwCreateKey(&KeyHandle1,
KEY_ALL_ACCESS,
&InitializedAttributes,
0,
NULL,
REG_OPTION_NON_VOLATILE,
&Disposition);
if(!NT_SUCCESS(ntStatus))
{
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "ZwCreateKey failed 0x%x\n",ntStatus);
ASSERT(FALSE);
}
ntStatus = ZwSetValueKey(KeyHandle1, &ValueName2, 0, REG_NONE,
&strKSNODETYPE_ANY, sizeof(strKSNODETYPE_ANY));
if(!NT_SUCCESS(ntStatus))
{
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "ZwSetValueKey for endpoint association
failed 0x%x\n",ntStatus);
ASSERT(FALSE);
}
ntStatus = ZwSetValueKey(KeyHandle1, &ValueName3, 0, REG_DWORD, &value,
sizeof(value));
if(!NT_SUCCESS(ntStatus))
{
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "ZwSetValueKey for event driven support
failed 0x%x\n",ntStatus);
ASSERT(FALSE);
}
ntStatus = IoSetDeviceInterfaceState(&ustrTopoAudio,TRUE);
if(!NT_SUCCESS(ntStatus))
{
DbgPrintEx( DPFLTR_IHVAUDIO_ID, 0, "IoSetDeviceInterfaceState failed 0x%x\n"
,ntStatus);
ASSERT(FALSE);
}
if(KeyHandle)
ZwClose (KeyHandle);
if(KeyHandle1)
ZwClose (KeyHandle1);
if(hKey)
ZwClose (hKey);
Appreciat your response.
Regards,
Sag
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