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[VIDEOPRT] Create and setup new registry key only for non-legacy drivers

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CORE-17734
This commit is contained in:
Hervé Poussineau 2021-08-18 19:27:33 +02:00
parent 4d0cc20681
commit 92d0dd3633
1 changed files with 59 additions and 0 deletions
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59
win32ss/drivers/videoprt/registry.c
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@ -302,6 +302,9 @@ IntSetupDeviceSettingsKey(
OBJECT_ATTRIBUTES ObjectAttributes;
NTSTATUS Status;
if (!DeviceExtension->PhysicalDeviceObject)
return STATUS_SUCCESS;
/* Open the software key: HKLM\System\CurrentControlSet\Control\Class\<ClassGUID>\<n> */
Status = IoOpenDeviceRegistryKey(DeviceExtension->PhysicalDeviceObject,
PLUGPLAY_REGKEY_DRIVER,
@ -353,6 +356,52 @@ IntSetupDeviceSettingsKey(
return STATUS_SUCCESS;
}
NTSTATUS
IntDuplicateUnicodeString(
IN ULONG Flags,
IN PCUNICODE_STRING SourceString,
OUT PUNICODE_STRING DestinationString)
{
if (SourceString == NULL ||
DestinationString == NULL ||
SourceString->Length > SourceString->MaximumLength ||
(SourceString->Length == 0 && SourceString->MaximumLength > 0 && SourceString->Buffer == NULL) ||
Flags == RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING ||
Flags >= 4)
{
return STATUS_INVALID_PARAMETER;
}
if ((SourceString->Length == 0) &&
(Flags != (RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE |
RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING)))
{
DestinationString->Length = 0;
DestinationString->MaximumLength = 0;
DestinationString->Buffer = NULL;
}
else
{
USHORT DestMaxLength = SourceString->Length;
if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
DestMaxLength += sizeof(UNICODE_NULL);
DestinationString->Buffer = ExAllocatePoolWithTag(PagedPool, DestMaxLength, TAG_VIDEO_PORT);
if (DestinationString->Buffer == NULL)
return STATUS_NO_MEMORY;
RtlCopyMemory(DestinationString->Buffer, SourceString->Buffer, SourceString->Length);
DestinationString->Length = SourceString->Length;
DestinationString->MaximumLength = DestMaxLength;
if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
DestinationString->Buffer[DestinationString->Length / sizeof(WCHAR)] = 0;
}
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
IntCreateNewRegistryPath(
@ -372,6 +421,16 @@ IntCreateNewRegistryPath(
OBJECT_ATTRIBUTES ObjectAttributes;
PWCHAR InstanceIdBuffer;
if (!DeviceExtension->PhysicalDeviceObject)
{
Status = IntDuplicateUnicodeString(RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE,
&DeviceExtension->RegistryPath,
&DeviceExtension->NewRegistryPath);
if (!NT_SUCCESS(Status))
ERR_(VIDEOPRT, "IntDuplicateUnicodeString() failed with status 0x%lx\n", Status);
return Status;
}
/* Open the hardware key: HKLM\System\CurrentControlSet\Enum\... */
Status = IoOpenDeviceRegistryKey(DeviceExtension->PhysicalDeviceObject,
PLUGPLAY_REGKEY_DEVICE,