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[NTOS]

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- implement PlugPlayControlGetInterfaceDeviceList class for NtPlugPlayControl

svn path=/trunk/; revision=65330
This commit is contained in:
Johannes Anderwald 2014-11-08 20:58:57 +00:00
parent 038c71e251
commit e713fbca92
1 changed files with 69 additions and 0 deletions
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69
reactos/ntoskrnl/io/pnpmgr/plugplay.c
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@ -208,6 +208,70 @@ IopCaptureUnicodeString(PUNICODE_STRING DstName, PUNICODE_STRING SrcName)
return Status;
}
static NTSTATUS
IopGetInterfaceDeviceList(PPLUGPLAY_CONTROL_INTERFACE_DEVICE_LIST_DATA DeviceList)
{
NTSTATUS Status;
UNICODE_STRING DeviceInstance;
PDEVICE_OBJECT DeviceObject = NULL;
ULONG BufferSize = 0;
GUID FilterGuid;
PZZWSTR SymbolicLinkList = NULL, LinkList;
ULONG TotalLength = 0;
_SEH2_TRY
{
ProbeForRead(DeviceList->FilterGuid, sizeof(GUID), sizeof(UCHAR));
RtlCopyMemory(&FilterGuid, DeviceList->FilterGuid, sizeof(GUID));
if (DeviceList->Buffer != NULL && DeviceList->BufferSize != 0)
{
BufferSize = DeviceList->BufferSize;
ProbeForWrite(DeviceList->Buffer, BufferSize, sizeof(UCHAR));
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
ExFreePool(DeviceInstance.Buffer);
_SEH2_YIELD(return _SEH2_GetExceptionCode());
}
_SEH2_END;
Status = IopCaptureUnicodeString(&DeviceInstance, &DeviceList->DeviceInstance);
if (NT_SUCCESS(Status))
{
/* Get the device object */
DeviceObject = IopGetDeviceObjectFromDeviceInstance(&DeviceInstance);
ExFreePool(DeviceInstance.Buffer);
}
Status = IoGetDeviceInterfaces(&FilterGuid, DeviceObject, DeviceList->Flags, &SymbolicLinkList);
ObDereferenceObject(DeviceObject);
if (!NT_SUCCESS(Status))
{
/* failed */
return Status;
}
LinkList = SymbolicLinkList;
while (*SymbolicLinkList != UNICODE_NULL)
{
TotalLength += (wcslen(SymbolicLinkList) + 1) * sizeof(WCHAR);
SymbolicLinkList += wcslen(SymbolicLinkList) + (sizeof(UNICODE_NULL) / sizeof(WCHAR));
}
TotalLength += sizeof(UNICODE_NULL);
if (BufferSize >= TotalLength)
{
RtlCopyMemory(DeviceList->Buffer, SymbolicLinkList, TotalLength * sizeof(WCHAR));
}
DeviceList->BufferSize = TotalLength;
ExFreePool(LinkList);
return STATUS_SUCCESS;
}
static NTSTATUS
IopGetDeviceProperty(PPLUGPLAY_CONTROL_PROPERTY_DATA PropertyData)
{
@ -865,6 +929,11 @@ NtPlugPlayControl(IN PLUGPLAY_CONTROL_CLASS PlugPlayControlClass,
return STATUS_INVALID_PARAMETER;
return IopRemovePlugPlayEvent();
case PlugPlayControlGetInterfaceDeviceList:
if (!Buffer || BufferLength < sizeof(PLUGPLAY_CONTROL_INTERFACE_DEVICE_LIST_DATA))
return STATUS_INVALID_PARAMETER;
return IopGetInterfaceDeviceList((PPLUGPLAY_CONTROL_INTERFACE_DEVICE_LIST_DATA)Buffer);
case PlugPlayControlProperty:
if (!Buffer || BufferLength < sizeof(PLUGPLAY_CONTROL_PROPERTY_DATA))
return STATUS_INVALID_PARAMETER;