patch by Filip Navara:
[reactos.git] / reactos / ntoskrnl / io / pnpmgr.c
index 8f4b8d8..d706ba0 100644 (file)
@@ -1,34 +1,21 @@
-/* $Id: pnpmgr.c,v 1.31 2004/08/01 21:57:34 navaraf Exp $
+/* $Id$
  *
- * COPYRIGHT:      See COPYING in the top level directory
- * PROJECT:        ReactOS kernel
- * FILE:           ntoskrnl/io/pnpmgr/pnpmgr.c
- * PURPOSE:        Initializes the PnP manager
- * PROGRAMMER:     Casper S. Hornstrup (chorns@users.sourceforge.net)
- * UPDATE HISTORY:
- *  16/04/2001 CSH Created
+ * COPYRIGHT:       See COPYING in the top level directory
+ * PROJECT:         ReactOS kernel
+ * FILE:            ntoskrnl/io/pnpmgr.c
+ * PURPOSE:         Initializes the PnP manager
+ * 
+ * PROGRAMMERS:     Casper S. Hornstrup (chorns@users.sourceforge.net)
  */
 
 /* INCLUDES ******************************************************************/
 
-#include <ddk/ntddk.h>
-#include <reactos/bugcodes.h>
-#include <internal/io.h>
-#include <internal/po.h>
-#include <internal/ldr.h>
-#include <internal/module.h>
-
-#include <ole32/guiddef.h>
-//#include <ddk/pnpfuncs.h>
-#ifdef DEFINE_GUID
-DEFINE_GUID(GUID_CLASS_COMPORT,          0x86e0d1e0L, 0x8089, 0x11d0, 0x9c, 0xe4, 0x08, 0x00, 0x3e, 0x30, 0x1f, 0x73);
-DEFINE_GUID(GUID_SERENUM_BUS_ENUMERATOR, 0x4D36E978L, 0xE325, 0x11CE, 0xBF, 0xC1, 0x08, 0x00, 0x2B, 0xE1, 0x03, 0x18);
-#endif // DEFINE_GUID
+#include <ntoskrnl.h>
+#include <ddk/wdmguid.h>
 
 #define NDEBUG
 #include <internal/debug.h>
 
-
 /* GLOBALS *******************************************************************/
 
 PDEVICE_NODE IopRootDeviceNode;
@@ -40,17 +27,6 @@ PDRIVER_OBJECT IopRootDriverObject;
 
 /* FUNCTIONS *****************************************************************/
 
-/*
- * @unimplemented
- */
-VOID
-STDCALL
-IoAdjustPagingPathCount(
-  IN PLONG Count,
-  IN BOOLEAN Increment)
-{
-}
-
 /*
  * @unimplemented
  */
@@ -60,6 +36,7 @@ IoInvalidateDeviceRelations(
   IN PDEVICE_OBJECT DeviceObject,
   IN DEVICE_RELATION_TYPE Type)
 {
+  CHECKPOINT1;
 }
 
 PDEVICE_NODE FASTCALL
@@ -84,26 +61,18 @@ IoGetDeviceProperty(
   PDEVICE_NODE DeviceNode = IopGetDeviceNode(DeviceObject);
   ULONG Length;
   PVOID Data;
+  PWSTR Ptr;
 
-  DPRINT("IoGetDeviceProperty called\n");
+  DPRINT("IoGetDeviceProperty(%x %d)\n", DeviceObject, DeviceProperty);
 
-  if (DeviceNode == NULL ||
-      DeviceNode->BusInformation == NULL ||
-      DeviceNode->CapabilityFlags == NULL)
-  {
+  if (DeviceNode == NULL)
     return STATUS_INVALID_DEVICE_REQUEST;
-  }
 
-  /*
-   * Used IRPs:
-   *  IRP_MN_QUERY_ID
-   *  IRP_MN_QUERY_BUS_INFORMATION
-   */
   switch (DeviceProperty)
   {
     case DevicePropertyBusNumber:
       Length = sizeof(ULONG);
-      Data = &DeviceNode->BusInformation->BusNumber;
+      Data = &DeviceNode->ChildBusNumber;
       break;
 
     /* Complete, untested */
@@ -113,46 +82,167 @@ IoGetDeviceProperty(
         return STATUS_BUFFER_TOO_SMALL;
       swprintf((PWSTR)PropertyBuffer,
         L"{%08lX-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
-        DeviceNode->BusInformation->BusTypeGuid.Data1,
-        DeviceNode->BusInformation->BusTypeGuid.Data2,
-        DeviceNode->BusInformation->BusTypeGuid.Data3,
-        DeviceNode->BusInformation->BusTypeGuid.Data4[0],
-        DeviceNode->BusInformation->BusTypeGuid.Data4[1],
-        DeviceNode->BusInformation->BusTypeGuid.Data4[2],
-        DeviceNode->BusInformation->BusTypeGuid.Data4[3],
-        DeviceNode->BusInformation->BusTypeGuid.Data4[4],
-        DeviceNode->BusInformation->BusTypeGuid.Data4[5],
-        DeviceNode->BusInformation->BusTypeGuid.Data4[6],
-        DeviceNode->BusInformation->BusTypeGuid.Data4[7]);
+        DeviceNode->BusTypeGuid.Data1,
+        DeviceNode->BusTypeGuid.Data2,
+        DeviceNode->BusTypeGuid.Data3,
+        DeviceNode->BusTypeGuid.Data4[0],
+        DeviceNode->BusTypeGuid.Data4[1],
+        DeviceNode->BusTypeGuid.Data4[2],
+        DeviceNode->BusTypeGuid.Data4[3],
+        DeviceNode->BusTypeGuid.Data4[4],
+        DeviceNode->BusTypeGuid.Data4[5],
+        DeviceNode->BusTypeGuid.Data4[6],
+        DeviceNode->BusTypeGuid.Data4[7]);
       return STATUS_SUCCESS;
 
     case DevicePropertyLegacyBusType:
       Length = sizeof(INTERFACE_TYPE);
-      Data = &DeviceNode->BusInformation->LegacyBusType;
+      Data = &DeviceNode->ChildInterfaceType;
       break;
 
     case DevicePropertyAddress:
       Length = sizeof(ULONG);
-      Data = &DeviceNode->CapabilityFlags->Address;
+      Data = &DeviceNode->Address;
       break;
 
-    case DevicePropertyUINumber:
-      Length = sizeof(ULONG);
-      Data = &DeviceNode->CapabilityFlags->UINumber;
-      break;
+//    case DevicePropertyUINumber:
+//      if (DeviceNode->CapabilityFlags == NULL)
+//         return STATUS_INVALID_DEVICE_REQUEST;
+//      Length = sizeof(ULONG);
+//      Data = &DeviceNode->CapabilityFlags->UINumber;
+//      break;
 
-    case DevicePropertyBootConfiguration:
-    case DevicePropertyBootConfigurationTranslated:
-    case DevicePropertyClassGuid:
     case DevicePropertyClassName:
-    case DevicePropertyCompatibleIDs:
-    case DevicePropertyDeviceDescription:
+    case DevicePropertyClassGuid:
     case DevicePropertyDriverKeyName:
-    case DevicePropertyEnumeratorName: 
+    case DevicePropertyManufacturer:
     case DevicePropertyFriendlyName:
     case DevicePropertyHardwareID:
+    case DevicePropertyCompatibleIDs:
+    case DevicePropertyDeviceDescription:
     case DevicePropertyLocationInformation:
-    case DevicePropertyManufacturer:
+    case DevicePropertyUINumber:
+      {
+        LPWSTR RegistryPropertyName, KeyNameBuffer;
+        UNICODE_STRING KeyName, ValueName;
+        OBJECT_ATTRIBUTES ObjectAttributes;
+        KEY_VALUE_PARTIAL_INFORMATION *ValueInformation;
+        ULONG ValueInformationLength;
+        HANDLE KeyHandle;
+        NTSTATUS Status;
+
+        switch (DeviceProperty)
+        {
+          case DevicePropertyClassName:
+            RegistryPropertyName = L"Class"; break;
+          case DevicePropertyClassGuid:
+            RegistryPropertyName = L"ClassGuid"; break;
+          case DevicePropertyDriverKeyName:
+            RegistryPropertyName = L"Driver"; break;
+          case DevicePropertyManufacturer:
+            RegistryPropertyName = L"Mfg"; break;
+          case DevicePropertyFriendlyName:
+            RegistryPropertyName = L"FriendlyName"; break;
+          case DevicePropertyHardwareID:
+            RegistryPropertyName = L"HardwareID"; break;
+          case DevicePropertyCompatibleIDs:
+            RegistryPropertyName = L"CompatibleIDs"; break;
+          case DevicePropertyDeviceDescription:
+            RegistryPropertyName = L"DeviceDesc"; break;
+          case DevicePropertyLocationInformation:
+            RegistryPropertyName = L"LocationInformation"; break;
+          case DevicePropertyUINumber:
+            RegistryPropertyName = L"UINumber"; break;
+          default:
+            RegistryPropertyName = NULL; break;
+        }
+
+        KeyNameBuffer = ExAllocatePool(PagedPool,
+          (49 * sizeof(WCHAR)) + DeviceNode->InstancePath.Length);
+       
+       DPRINT("KeyNameBuffer: %x, value %S\n", 
+               KeyNameBuffer, RegistryPropertyName);
+
+        if (KeyNameBuffer == NULL)
+          return STATUS_INSUFFICIENT_RESOURCES;
+
+        wcscpy(KeyNameBuffer, L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
+        wcscat(KeyNameBuffer, DeviceNode->InstancePath.Buffer);
+        RtlInitUnicodeString(&KeyName, KeyNameBuffer);
+        InitializeObjectAttributes(&ObjectAttributes, &KeyName,
+                                   OBJ_CASE_INSENSITIVE, NULL, NULL);
+
+        Status = ZwOpenKey(&KeyHandle, KEY_READ, &ObjectAttributes);
+        ExFreePool(KeyNameBuffer);
+        if (!NT_SUCCESS(Status))
+          return Status;
+
+        RtlInitUnicodeString(&ValueName, RegistryPropertyName);
+        ValueInformationLength = FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION,
+                                 Data[0]) + BufferLength;
+        ValueInformation = ExAllocatePool(PagedPool, ValueInformationLength);
+        if (ValueInformation == NULL)
+        {
+          ZwClose(KeyHandle);
+          return STATUS_INSUFFICIENT_RESOURCES;
+        }
+
+        Status = ZwQueryValueKey(KeyHandle, &ValueName,
+                                 KeyValuePartialInformation, ValueInformation,
+                                 ValueInformationLength,
+                                 &ValueInformationLength);
+        *ResultLength = ValueInformation->DataLength;
+        ZwClose(KeyHandle);
+
+        if (ValueInformation->DataLength > BufferLength)
+          Status = STATUS_BUFFER_TOO_SMALL;
+
+        if (!NT_SUCCESS(Status))
+        {
+          ExFreePool(ValueInformation);
+          return Status;
+        }
+
+        /* FIXME: Verify the value (NULL-terminated, correct format). */
+
+        RtlCopyMemory(PropertyBuffer, ValueInformation->Data,
+                      ValueInformation->DataLength);
+        ExFreePool(ValueInformation);
+
+        return STATUS_SUCCESS;
+      }
+
+    case DevicePropertyBootConfiguration:
+      Length = 0;
+      if (DeviceNode->BootResources->Count != 0)
+      {
+       Length = CM_RESOURCE_LIST_SIZE(DeviceNode->BootResources);
+      }
+      Data = &DeviceNode->BootResources;
+      break;
+
+    /* FIXME: use a translated boot configuration instead */
+    case DevicePropertyBootConfigurationTranslated:
+      Length = 0;
+      if (DeviceNode->BootResources->Count != 0)
+      {
+       Length = CM_RESOURCE_LIST_SIZE(DeviceNode->BootResources);
+      }
+      Data = &DeviceNode->BootResources;
+      break;
+
+    case DevicePropertyEnumeratorName:
+      Ptr = wcschr(DeviceNode->InstancePath.Buffer, L'\\');
+      if (Ptr != NULL)
+      {
+       Length = (ULONG)((ULONG_PTR)Ptr - (ULONG_PTR)DeviceNode->InstancePath.Buffer) + sizeof(WCHAR);
+      }
+      else
+      {
+       Length = 0;
+       Data = NULL;
+      }
+
     case DevicePropertyPhysicalDeviceObjectName:
       return STATUS_NOT_IMPLEMENTED;
 
@@ -165,6 +255,13 @@ IoGetDeviceProperty(
     return STATUS_BUFFER_TOO_SMALL;
   RtlCopyMemory(PropertyBuffer, Data, Length);
 
+  /* Terminate the string */
+  if (DeviceProperty == DevicePropertyEnumeratorName)
+  {
+    Ptr = (PWSTR)PropertyBuffer;
+    Ptr[(Length / sizeof(WCHAR)) - 1] = 0;
+  }
+
   return STATUS_SUCCESS;
 }
 
@@ -178,25 +275,156 @@ IoInvalidateDeviceState(
 {
 }
 
-/*
- * @unimplemented
+/**
+ * @name IoOpenDeviceRegistryKey
+ *
+ * Open a registry key unique for a specified driver or device instance.
+ *
+ * @param DeviceObject   Device to get the registry key for.
+ * @param DevInstKeyType Type of the key to return.
+ * @param DesiredAccess  Access mask (eg. KEY_READ | KEY_WRITE).
+ * @param DevInstRegKey  Handle to the opened registry key on 
+ *                       successful return.
+ *
+ * @return Status.
+ *
+ * @implemented
  */
 NTSTATUS
 STDCALL
 IoOpenDeviceRegistryKey(
-  IN PDEVICE_OBJECT DeviceObject,
-  IN ULONG DevInstKeyType,
-  IN ACCESS_MASK DesiredAccess,
-  OUT PHANDLE DevInstRegKey)
+   IN PDEVICE_OBJECT DeviceObject,
+   IN ULONG DevInstKeyType,
+   IN ACCESS_MASK DesiredAccess,
+   OUT PHANDLE DevInstRegKey)
 {
-  return STATUS_NOT_IMPLEMENTED;
+   static WCHAR RootKeyName[] =
+      L"\\Registry\\Machine\\System\\CurrentControlSet\\";
+   static WCHAR ProfileKeyName[] =
+      L"Hardware Profiles\\Current\\System\\CurrentControlSet\\";
+   static WCHAR ClassKeyName[] = L"Control\\Class\\";
+   static WCHAR EnumKeyName[] = L"Enum\\";
+   static WCHAR DeviceParametersKeyName[] = L"Device Parameters\\";
+   ULONG KeyNameLength;
+   LPWSTR KeyNameBuffer;
+   UNICODE_STRING KeyName;
+   ULONG DriverKeyLength;
+   OBJECT_ATTRIBUTES ObjectAttributes;
+   PDEVICE_NODE DeviceNode = NULL;
+   NTSTATUS Status;
+
+   if ((DevInstKeyType & (PLUGPLAY_REGKEY_DEVICE | PLUGPLAY_REGKEY_DRIVER)) == 0)
+      return STATUS_INVALID_PARAMETER;
+
+   /*
+    * Calculate the length of the base key name. This is the full
+    * name for driver key or the name excluding "Device Parameters"
+    * subkey for device key.
+    */
+
+   KeyNameLength = sizeof(RootKeyName);
+   if (DevInstKeyType & PLUGPLAY_REGKEY_CURRENT_HWPROFILE)
+      KeyNameLength += sizeof(ProfileKeyName) - sizeof(UNICODE_NULL);
+   if (DevInstKeyType & PLUGPLAY_REGKEY_DRIVER)
+   {
+      KeyNameLength += sizeof(ClassKeyName) - sizeof(UNICODE_NULL);
+      Status = IoGetDeviceProperty(DeviceObject, DevicePropertyDriverKeyName,
+                                   0, NULL, &DriverKeyLength);
+      if (Status != STATUS_BUFFER_TOO_SMALL)
+         return Status;
+      KeyNameLength += DriverKeyLength;
+   }
+   else
+   {
+      DeviceNode = IopGetDeviceNode(DeviceObject);
+      KeyNameLength += sizeof(EnumKeyName) - sizeof(UNICODE_NULL) +
+                       DeviceNode->InstancePath.Length;
+   }
+
+   /*
+    * Now allocate the buffer for the key name...
+    */
+
+   KeyNameBuffer = ExAllocatePool(PagedPool, KeyNameLength);
+   if (KeyNameBuffer == NULL)
+      return STATUS_INSUFFICIENT_RESOURCES;
+
+   KeyName.Length = 0;
+   KeyName.MaximumLength = KeyNameLength;
+   KeyName.Buffer = KeyNameBuffer;
+
+   /*
+    * ...and build the key name.
+    */
+
+   KeyName.Length += sizeof(RootKeyName) - sizeof(UNICODE_NULL);
+   RtlCopyMemory(KeyNameBuffer, RootKeyName, KeyName.Length);
+
+   if (DevInstKeyType & PLUGPLAY_REGKEY_CURRENT_HWPROFILE)
+      RtlAppendUnicodeToString(&KeyName, ProfileKeyName);
+  
+   if (DevInstKeyType & PLUGPLAY_REGKEY_DRIVER)
+   {
+      RtlAppendUnicodeToString(&KeyName, ClassKeyName);
+      Status = IoGetDeviceProperty(DeviceObject, DevicePropertyDriverKeyName,
+                                   DriverKeyLength, KeyNameBuffer +
+                                   (KeyName.Length / sizeof(WCHAR)),
+                                   &DriverKeyLength);
+      if (!NT_SUCCESS(Status))
+      {
+         ExFreePool(KeyNameBuffer);
+         return Status;
+      }
+      KeyName.Length += DriverKeyLength - sizeof(UNICODE_NULL);
+   }
+   else
+   {
+      RtlAppendUnicodeToString(&KeyName, EnumKeyName);
+      Status = RtlAppendUnicodeStringToString(&KeyName, &DeviceNode->InstancePath);
+      if (DeviceNode->InstancePath.Length == 0)
+      {
+         ExFreePool(KeyNameBuffer);
+         return Status;
+      }
+   }
+
+   /*
+    * Open the base key.
+    */
+
+   InitializeObjectAttributes(&ObjectAttributes, &KeyName,
+                              OBJ_CASE_INSENSITIVE, NULL, NULL);
+   Status = ZwOpenKey(DevInstRegKey, DesiredAccess, &ObjectAttributes);
+   ExFreePool(KeyNameBuffer);
+
+   /*
+    * For driver key we're done now. Also if the base key doesn't
+    * exist we can bail out with error...
+    */
+
+   if ((DevInstKeyType & PLUGPLAY_REGKEY_DRIVER) || !NT_SUCCESS(Status))
+      return Status;
+
+   /*
+    * Let's go further. For device key we must open "Device Parameters"
+    * subkey and create it if it doesn't exist yet.
+    */
+
+   RtlInitUnicodeString(&KeyName, DeviceParametersKeyName);
+   InitializeObjectAttributes(&ObjectAttributes, &KeyName,
+                              OBJ_CASE_INSENSITIVE, *DevInstRegKey, NULL);
+   Status = ZwCreateKey(DevInstRegKey, DesiredAccess, &ObjectAttributes,
+                        0, NULL, REG_OPTION_NON_VOLATILE, NULL);
+   ZwClose(ObjectAttributes.RootDirectory);
+
+   return Status;
 }
 
 /*
  * @unimplemented
  */
-STDCALL
 VOID
+STDCALL
 IoRequestDeviceEject(
     IN PDEVICE_OBJECT PhysicalDeviceObject
     )
@@ -207,7 +435,7 @@ IoRequestDeviceEject(
 
 BOOLEAN
 IopCreateUnicodeString(
-  PUNICODE_STRING      Destination,
+  PUNICODE_STRING Destination,
   PWSTR Source,
   POOL_TYPE PoolType)
 {
@@ -245,7 +473,7 @@ IopGetSystemPowerDeviceObject(PDEVICE_OBJECT *DeviceObject)
   if (PopSystemPowerDeviceNode)
   {
     KeAcquireSpinLock(&IopDeviceTreeLock, &OldIrql);
-    *DeviceObject = PopSystemPowerDeviceNode->Pdo;
+    *DeviceObject = PopSystemPowerDeviceNode->PhysicalDeviceObject;
     KeReleaseSpinLock(&IopDeviceTreeLock, OldIrql);
 
     return STATUS_SUCCESS;
@@ -254,7 +482,7 @@ IopGetSystemPowerDeviceObject(PDEVICE_OBJECT *DeviceObject)
   return STATUS_UNSUCCESSFUL;
 }
 
-/**********************************************************************
+/*
  * DESCRIPTION
  *     Creates a device node
  *
@@ -280,7 +508,7 @@ IopCreateDeviceNode(PDEVICE_NODE ParentNode,
   DPRINT("ParentNode %x PhysicalDeviceObject %x\n",
     ParentNode, PhysicalDeviceObject);
 
-  Node = (PDEVICE_NODE)ExAllocatePool(PagedPool, sizeof(DEVICE_NODE));
+  Node = (PDEVICE_NODE)ExAllocatePool(NonPagedPool, sizeof(DEVICE_NODE));
   if (!Node)
     {
       return STATUS_INSUFFICIENT_RESOURCES;
@@ -302,7 +530,7 @@ IopCreateDeviceNode(PDEVICE_NODE ParentNode,
       IopDeviceNodeSetFlag(Node, DNF_LEGACY_DRIVER);
     }
 
-  Node->Pdo = PhysicalDeviceObject;
+  Node->PhysicalDeviceObject = PhysicalDeviceObject;
 
   PhysicalDeviceObject->DeviceObjectExtension->DeviceNode = Node;
 
@@ -330,13 +558,13 @@ IopFreeDeviceNode(PDEVICE_NODE DeviceNode)
   KIRQL OldIrql;
 
   /* All children must be deleted before a parent is deleted */
-  assert(!DeviceNode->Child);
+  ASSERT(!DeviceNode->Child);
 
   KeAcquireSpinLock(&IopDeviceTreeLock, &OldIrql);
 
-  assert(DeviceNode->Pdo);
+  ASSERT(DeviceNode->PhysicalDeviceObject);
 
-  ObDereferenceObject(DeviceNode->Pdo);
+  ObDereferenceObject(DeviceNode->PhysicalDeviceObject);
 
   /* Unlink from parent if it exists */
 
@@ -363,41 +591,24 @@ IopFreeDeviceNode(PDEVICE_NODE DeviceNode)
 
   RtlFreeUnicodeString(&DeviceNode->ServiceName);
 
-  if (DeviceNode->CapabilityFlags)
+  if (DeviceNode->ResourceList)
   {
-    ExFreePool(DeviceNode->CapabilityFlags);
+    ExFreePool(DeviceNode->ResourceList);
   }
 
-  if (DeviceNode->CmResourceList)
+  if (DeviceNode->ResourceListTranslated)
   {
-    ExFreePool(DeviceNode->CmResourceList);
+    ExFreePool(DeviceNode->ResourceListTranslated);
   }
 
-  if (DeviceNode->BootResourcesList)
+  if (DeviceNode->ResourceRequirements)
   {
-    ExFreePool(DeviceNode->BootResourcesList);
+    ExFreePool(DeviceNode->ResourceRequirements);
   }
 
-  if (DeviceNode->ResourceRequirementsList)
+  if (DeviceNode->BootResources)
   {
-    ExFreePool(DeviceNode->ResourceRequirementsList);
-  }
-
-  RtlFreeUnicodeString(&DeviceNode->DeviceID);
-
-  RtlFreeUnicodeString(&DeviceNode->InstanceID);
-
-  RtlFreeUnicodeString(&DeviceNode->HardwareIDs);
-
-  RtlFreeUnicodeString(&DeviceNode->CompatibleIDs);
-
-  RtlFreeUnicodeString(&DeviceNode->DeviceText);
-
-  RtlFreeUnicodeString(&DeviceNode->DeviceTextLocation);
-
-  if (DeviceNode->BusInformation)
-  {
-    ExFreePool(DeviceNode->BusInformation);
+    ExFreePool(DeviceNode->BootResources);
   }
 
   ExFreePool(DeviceNode);
@@ -423,22 +634,22 @@ IopInitiatePnpIrp(
 
   KeInitializeEvent(
     &Event,
-         NotificationEvent,
-         FALSE);
-
-  /* PNP IRPs are always initialized with a status code of
-     STATUS_NOT_IMPLEMENTED */
-  IoStatusBlock->Status = STATUS_NOT_IMPLEMENTED;
-  IoStatusBlock->Information = 0;
+    NotificationEvent,
+    FALSE);
 
   Irp = IoBuildSynchronousFsdRequest(
     IRP_MJ_PNP,
     TopDeviceObject,
-         NULL,
-         0,
-         NULL,
-         &Event,
-         IoStatusBlock);
+    NULL,
+    0,
+    NULL,
+    &Event,
+    IoStatusBlock);
+
+  /* PNP IRPs are always initialized with a status code of
+     STATUS_NOT_IMPLEMENTED */
+  Irp->IoStatus.Status = STATUS_NOT_IMPLEMENTED;
+  Irp->IoStatus.Information = 0;
 
   IrpSp = IoGetNextIrpStackLocation(Irp);
   IrpSp->MinorFunction = MinorFunction;
@@ -469,52 +680,6 @@ IopInitiatePnpIrp(
 }
 
 
-NTSTATUS
-IopQueryCapabilities(
-  PDEVICE_OBJECT Pdo,
-  PDEVICE_CAPABILITIES *Capabilities)
-{
-  IO_STATUS_BLOCK IoStatusBlock;
-  PDEVICE_CAPABILITIES Caps;
-  IO_STACK_LOCATION Stack;
-  NTSTATUS Status;
-
-  DPRINT("Sending IRP_MN_QUERY_CAPABILITIES to device stack\n");
-
-  *Capabilities = NULL;
-
-  Caps = ExAllocatePool(PagedPool, sizeof(DEVICE_CAPABILITIES));
-  if (!Caps)
-  {
-    return STATUS_INSUFFICIENT_RESOURCES;
-  }
-
-  RtlZeroMemory(Caps, sizeof(DEVICE_CAPABILITIES));
-  Caps->Size = sizeof(DEVICE_CAPABILITIES);
-  Caps->Version = 1;
-  Caps->Address = -1;
-  Caps->UINumber = -1;
-
-  Stack.Parameters.DeviceCapabilities.Capabilities = Caps;
-
-  Status = IopInitiatePnpIrp(
-    Pdo,
-    &IoStatusBlock,
-    IRP_MN_QUERY_CAPABILITIES,
-    &Stack);
-  if (NT_SUCCESS(Status))
-  {
-    *Capabilities = Caps;
-  }
-  else
-  {
-    DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-  }
-
-  return Status;
-}
-
-
 NTSTATUS
 IopTraverseDeviceTreeNode(
   PDEVICETREE_TRAVERSE_CONTEXT Context)
@@ -580,7 +745,8 @@ IopTraverseDeviceTree(
 
 
 static NTSTATUS
-IopCreateDeviceKeyPath(PWSTR Path)
+IopCreateDeviceKeyPath(PWSTR Path,
+                      PHANDLE Handle)
 {
   OBJECT_ATTRIBUTES ObjectAttributes;
   WCHAR KeyBuffer[MAX_PATH];
@@ -590,22 +756,23 @@ IopCreateDeviceKeyPath(PWSTR Path)
   PWCHAR Current;
   PWCHAR Next;
 
+  *Handle = NULL;
+
   if (_wcsnicmp(Path, L"\\Registry\\", 10) != 0)
     {
       return STATUS_INVALID_PARAMETER;
     }
 
   wcsncpy (KeyBuffer, Path, MAX_PATH-1);
-  RtlInitUnicodeString (&KeyName, KeyBuffer);
 
   /* Skip \\Registry\\ */
-  Current = KeyName.Buffer;
-  Current = wcschr (Current, '\\') + 1;
-  Current = wcschr (Current, '\\') + 1;
+  Current = KeyBuffer;
+  Current = wcschr (Current, L'\\') + 1;
+  Current = wcschr (Current, L'\\') + 1;
 
-  do
-   {
-      Next = wcschr (Current, '\\');
+  while (TRUE)
+    {
+      Next = wcschr (Current, L'\\');
       if (Next == NULL)
        {
          /* The end */
@@ -615,6 +782,7 @@ IopCreateDeviceKeyPath(PWSTR Path)
          *Next = 0;
        }
 
+      RtlInitUnicodeString (&KeyName, KeyBuffer);
       InitializeObjectAttributes (&ObjectAttributes,
                                  &KeyName,
                                  OBJ_CASE_INSENSITIVE,
@@ -623,7 +791,7 @@ IopCreateDeviceKeyPath(PWSTR Path)
 
       DPRINT("Create '%S'\n", KeyName.Buffer);
 
-      Status = NtCreateKey (&KeyHandle,
+      Status = ZwCreateKey (&KeyHandle,
                            KEY_ALL_ACCESS,
                            &ObjectAttributes,
                            0,
@@ -632,20 +800,95 @@ IopCreateDeviceKeyPath(PWSTR Path)
                            NULL);
       if (!NT_SUCCESS (Status))
        {
-         DPRINT ("NtCreateKey() failed with status %x\n", Status);
+         DPRINT ("ZwCreateKey() failed with status %x\n", Status);
          return Status;
        }
 
-      NtClose (KeyHandle);
-
-      if (Next != NULL)
+      if (Next == NULL)
        {
+         *Handle = KeyHandle;
+         return STATUS_SUCCESS;
+       }
+      else
+       {
+         ZwClose (KeyHandle);
          *Next = L'\\';
        }
 
       Current = Next + 1;
     }
-   while (Next != NULL);
+
+  return STATUS_UNSUCCESSFUL;
+}
+
+
+static NTSTATUS
+IopSetDeviceInstanceData(HANDLE InstanceKey,
+                        PDEVICE_NODE DeviceNode)
+{
+  OBJECT_ATTRIBUTES ObjectAttributes;
+  UNICODE_STRING KeyName;
+  HANDLE LogConfKey;
+  ULONG ResCount;
+  ULONG ListSize;
+  NTSTATUS Status;
+
+  DPRINT("IopSetDeviceInstanceData() called\n");
+
+  /* Create the 'LogConf' key */
+  RtlInitUnicodeString(&KeyName,
+                      L"LogConf");
+  InitializeObjectAttributes(&ObjectAttributes,
+                            &KeyName,
+                            OBJ_CASE_INSENSITIVE,
+                            InstanceKey,
+                            NULL);
+  Status = ZwCreateKey(&LogConfKey,
+                      KEY_ALL_ACCESS,
+                      &ObjectAttributes,
+                      0,
+                      NULL,
+                      0,
+                      NULL);
+  if (NT_SUCCESS(Status))
+  {
+    /* Set 'BootConfig' value */
+    if (DeviceNode->BootResources != NULL)
+    {
+      ResCount = DeviceNode->BootResources->Count;
+      if (ResCount != 0)
+      {
+       ListSize = CM_RESOURCE_LIST_SIZE(DeviceNode->BootResources);
+
+       RtlInitUnicodeString(&KeyName,
+                            L"BootConfig");
+       Status = ZwSetValueKey(LogConfKey,
+                              &KeyName,
+                              0,
+                              REG_RESOURCE_LIST,
+                              &DeviceNode->BootResources,
+                              ListSize);
+      }
+    }
+
+    /* Set 'BasicConfigVector' value */
+    if (DeviceNode->ResourceRequirements != NULL &&
+       DeviceNode->ResourceRequirements->ListSize != 0)
+    {
+      RtlInitUnicodeString(&KeyName,
+                          L"BasicConfigVector");
+      Status = ZwSetValueKey(LogConfKey,
+                            &KeyName,
+                            0,
+                            REG_RESOURCE_REQUIREMENTS_LIST,
+                            &DeviceNode->ResourceRequirements,
+                            DeviceNode->ResourceRequirements->ListSize);
+    }
+
+    ZwClose(LogConfKey);
+  }
+
+  DPRINT("IopSetDeviceInstanceData() done\n");
 
   return STATUS_SUCCESS;
 }
@@ -684,9 +927,12 @@ IopActionInterrogateDeviceStack(
    PWSTR Ptr;
    USHORT Length;
    USHORT TotalLength;
+   HANDLE InstanceKey = NULL;
+   UNICODE_STRING ValueName;
+   DEVICE_CAPABILITIES DeviceCapabilities;
 
    DPRINT("IopActionInterrogateDeviceStack(%p, %p)\n", DeviceNode, Context);
-   DPRINT("PDO %x\n", DeviceNode->Pdo);
+   DPRINT("PDO %x\n", DeviceNode->PhysicalDeviceObject);
 
    ParentDeviceNode = (PDEVICE_NODE)Context;
 
@@ -722,15 +968,14 @@ IopActionInterrogateDeviceStack(
 
    Stack.Parameters.QueryId.IdType = BusQueryDeviceID;
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_ID,
       &Stack);
    if (NT_SUCCESS(Status))
    {
-      RtlInitUnicodeString(
-         &DeviceNode->DeviceID,
-         (PWSTR)IoStatusBlock.Information);
+      /* Copy the device id string */
+      wcscpy(InstancePath, (PWSTR)IoStatusBlock.Information);
 
       /*
        * FIXME: Check for valid characters, if there is invalid characters
@@ -740,22 +985,21 @@ IopActionInterrogateDeviceStack(
    else
    {
       DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-      RtlInitUnicodeString(&DeviceNode->DeviceID, NULL);
    }
 
    DPRINT("Sending IRP_MN_QUERY_ID.BusQueryInstanceID to device stack\n");
 
    Stack.Parameters.QueryId.IdType = BusQueryInstanceID;
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_ID,
       &Stack);
    if (NT_SUCCESS(Status))
    {
-      RtlInitUnicodeString(
-      &DeviceNode->InstanceID,
-      (PWSTR)IoStatusBlock.Information);
+      /* Append the instance id string */
+      wcscat(InstancePath, L"\\");
+      wcscat(InstancePath, (PWSTR)IoStatusBlock.Information);
 
       /*
        * FIXME: Check for valid characters, if there is invalid characters
@@ -765,14 +1009,92 @@ IopActionInterrogateDeviceStack(
    else
    {
       DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-      RtlInitUnicodeString(&DeviceNode->InstanceID, NULL);
+   }
+
+   RtlZeroMemory(&DeviceCapabilities, sizeof(DEVICE_CAPABILITIES));
+   DeviceCapabilities.Size = sizeof(DEVICE_CAPABILITIES);
+   DeviceCapabilities.Version = 1;
+   DeviceCapabilities.Address = -1;
+   DeviceCapabilities.UINumber = -1;
+
+   Stack.Parameters.DeviceCapabilities.Capabilities = &DeviceCapabilities;
+   Status = IopInitiatePnpIrp(
+      DeviceNode->PhysicalDeviceObject,
+      &IoStatusBlock,
+      IRP_MN_QUERY_CAPABILITIES,
+      &Stack);
+   if (NT_SUCCESS(Status))
+   {
+   }
+   else
+   {
+      DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
+   }
+
+   DeviceNode->CapabilityFlags = *(PULONG)((ULONG_PTR)&DeviceCapabilities + 4);
+   DeviceNode->Address = DeviceCapabilities.Address;
+
+   if (!DeviceCapabilities.UniqueID)
+   {
+      DPRINT("Instance ID is not unique\n");
+      /* FIXME: Add information from parent bus driver to InstancePath */
+   }
+
+   if (!IopCreateUnicodeString(&DeviceNode->InstancePath, InstancePath, PagedPool))
+   {
+      DPRINT("No resources\n");
+      /* FIXME: Cleanup and disable device */
+   }
+
+   DPRINT("InstancePath is %S\n", DeviceNode->InstancePath.Buffer);
+
+   /*
+    * Create registry key for the instance id, if it doesn't exist yet
+    */
+   KeyBuffer = ExAllocatePool(
+      PagedPool,
+      (49 * sizeof(WCHAR)) + DeviceNode->InstancePath.Length);
+   wcscpy(KeyBuffer, L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
+   wcscat(KeyBuffer, DeviceNode->InstancePath.Buffer);
+   Status = IopCreateDeviceKeyPath(KeyBuffer,
+                                  &InstanceKey);
+   ExFreePool(KeyBuffer);
+   if (!NT_SUCCESS(Status))
+   {
+      DPRINT1("Failed to create the instance key! (Status %lx)\n", Status);
+   }
+
+
+   {
+      /* Set 'Capabilities' value */
+      RtlInitUnicodeString(&ValueName,
+                          L"Capabilities");
+      Status = ZwSetValueKey(InstanceKey,
+                            &ValueName,
+                            0,
+                            REG_DWORD,
+                            (PVOID)&DeviceNode->CapabilityFlags,
+                            sizeof(ULONG));
+
+      /* Set 'UINumber' value */
+      if (DeviceCapabilities.UINumber != (ULONG)-1)
+      {
+         RtlInitUnicodeString(&ValueName,
+                             L"UINumber");
+         Status = ZwSetValueKey(InstanceKey,
+                               &ValueName,
+                               0,
+                               REG_DWORD,
+                               &DeviceCapabilities.UINumber,
+                               sizeof(ULONG));
+      }
    }
 
    DPRINT("Sending IRP_MN_QUERY_ID.BusQueryHardwareIDs to device stack\n");
 
    Stack.Parameters.QueryId.IdType = BusQueryHardwareIDs;
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_ID,
       &Stack);
@@ -796,21 +1118,29 @@ IopActionInterrogateDeviceStack(
       DPRINT("TotalLength: %hu\n", TotalLength);
       DPRINT("\n");
 
-      DeviceNode->HardwareIDs.Length = TotalLength * sizeof(WCHAR);
-      DeviceNode->HardwareIDs.MaximumLength = DeviceNode->HardwareIDs.Length + sizeof(WCHAR);
-      DeviceNode->HardwareIDs.Buffer = (PWSTR)IoStatusBlock.Information;
+      RtlInitUnicodeString(&ValueName,
+                          L"HardwareID");
+      Status = ZwSetValueKey(InstanceKey,
+                            &ValueName,
+                            0,
+                            REG_MULTI_SZ,
+                            (PVOID)IoStatusBlock.Information,
+                            (TotalLength + 1) * sizeof(WCHAR));
+      if (!NT_SUCCESS(Status))
+       {
+          DPRINT1("ZwSetValueKey() failed (Status %lx)\n", Status);
+       }
    }
    else
    {
       DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-      RtlInitUnicodeString(&DeviceNode->HardwareIDs, NULL);
    }
 
    DPRINT("Sending IRP_MN_QUERY_ID.BusQueryCompatibleIDs to device stack\n");
 
    Stack.Parameters.QueryId.IdType = BusQueryCompatibleIDs;
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_ID,
       &Stack);
@@ -834,43 +1164,52 @@ IopActionInterrogateDeviceStack(
       DPRINT("TotalLength: %hu\n", TotalLength);
       DPRINT("\n");
 
-      DeviceNode->CompatibleIDs.Length = TotalLength * sizeof(WCHAR);
-      DeviceNode->CompatibleIDs.MaximumLength = DeviceNode->CompatibleIDs.Length + sizeof(WCHAR);
-      DeviceNode->CompatibleIDs.Buffer = (PWSTR)IoStatusBlock.Information;
+      RtlInitUnicodeString(&ValueName,
+                          L"CompatibleIDs");
+      Status = ZwSetValueKey(InstanceKey,
+                            &ValueName,
+                            0,
+                            REG_MULTI_SZ,
+                            (PVOID)IoStatusBlock.Information,
+                            (TotalLength + 1) * sizeof(WCHAR));
+      if (!NT_SUCCESS(Status))
+       {
+          DPRINT1("ZwSetValueKey() failed (Status %lx)\n", Status);
+       }
    }
    else
    {
       DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-      RtlInitUnicodeString(&DeviceNode->CompatibleIDs, NULL);
    }
 
-   Status = IopQueryCapabilities(DeviceNode->Pdo, &DeviceNode->CapabilityFlags);
-   if (NT_SUCCESS(Status))
-   {
-   }
-   else
-   {
-   }
 
    DPRINT("Sending IRP_MN_QUERY_DEVICE_TEXT.DeviceTextDescription to device stack\n");
 
    Stack.Parameters.QueryDeviceText.DeviceTextType = DeviceTextDescription;
    Stack.Parameters.QueryDeviceText.LocaleId = 0; /* FIXME */
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_DEVICE_TEXT,
       &Stack);
    if (NT_SUCCESS(Status))
    {
-      RtlInitUnicodeString(
-         &DeviceNode->DeviceText,
-         (PWSTR)IoStatusBlock.Information);
+      RtlInitUnicodeString(&ValueName,
+                          L"DeviceDesc");
+      Status = ZwSetValueKey(InstanceKey,
+                            &ValueName,
+                            0,
+                            REG_SZ,
+                            (PVOID)IoStatusBlock.Information,
+                            (wcslen((PWSTR)IoStatusBlock.Information) + 1) * sizeof(WCHAR));
+      if (!NT_SUCCESS(Status))
+       {
+          DPRINT1("ZwSetValueKey() failed (Status %lx)\n", Status);
+       }
    }
    else
    {
       DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-      RtlInitUnicodeString(&DeviceNode->DeviceText, NULL);
    }
 
    DPRINT("Sending IRP_MN_QUERY_DEVICE_TEXT.DeviceTextLocation to device stack\n");
@@ -878,112 +1217,112 @@ IopActionInterrogateDeviceStack(
    Stack.Parameters.QueryDeviceText.DeviceTextType = DeviceTextLocationInformation;
    Stack.Parameters.QueryDeviceText.LocaleId = 0; // FIXME
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_DEVICE_TEXT,
       &Stack);
    if (NT_SUCCESS(Status))
    {
-      RtlInitUnicodeString(
-         &DeviceNode->DeviceTextLocation,
-         (PWSTR)IoStatusBlock.Information);
+      DPRINT("LocationInformation: %S\n", (PWSTR)IoStatusBlock.Information);
+      RtlInitUnicodeString(&ValueName,
+                          L"LocationInformation");
+      Status = ZwSetValueKey(InstanceKey,
+                            &ValueName,
+                            0,
+                            REG_SZ,
+                            (PVOID)IoStatusBlock.Information,
+                            (wcslen((PWSTR)IoStatusBlock.Information) + 1) * sizeof(WCHAR));
+      if (!NT_SUCCESS(Status))
+       {
+          DPRINT1("ZwSetValueKey() failed (Status %lx)\n", Status);
+       }
    }
    else
    {
       DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-      RtlInitUnicodeString(&DeviceNode->DeviceTextLocation, NULL);
    }
 
    DPRINT("Sending IRP_MN_QUERY_BUS_INFORMATION to device stack\n");
 
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_BUS_INFORMATION,
       NULL);
    if (NT_SUCCESS(Status))
    {
-      DeviceNode->BusInformation =
+      PPNP_BUS_INFORMATION BusInformation =
          (PPNP_BUS_INFORMATION)IoStatusBlock.Information;
+
+      DeviceNode->ChildBusNumber = BusInformation->BusNumber;
+      DeviceNode->ChildInterfaceType = BusInformation->LegacyBusType;
+      memcpy(&DeviceNode->BusTypeGuid,
+             &BusInformation->BusTypeGuid,
+             sizeof(GUID));
+      ExFreePool(BusInformation);
    }
    else
    {
       DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-      DeviceNode->BusInformation = NULL;
+
+      DeviceNode->ChildBusNumber = -1;
+      DeviceNode->ChildInterfaceType = -1;
+      memset(&DeviceNode->BusTypeGuid,
+             0,
+             sizeof(GUID));
    }
 
    DPRINT("Sending IRP_MN_QUERY_RESOURCES to device stack\n");
 
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_RESOURCES,
       NULL);
    if (NT_SUCCESS(Status))
    {
-      DeviceNode->BootResourcesList =
+      DeviceNode->BootResources =
          (PCM_RESOURCE_LIST)IoStatusBlock.Information;
       DeviceNode->Flags |= DNF_HAS_BOOT_CONFIG;
    }
    else
    {
       DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-      DeviceNode->BootResourcesList = NULL;
+      DeviceNode->BootResources = NULL;
    }
 
    DPRINT("Sending IRP_MN_QUERY_RESOURCE_REQUIREMENTS to device stack\n");
 
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_RESOURCE_REQUIREMENTS,
       NULL);
    if (NT_SUCCESS(Status))
    {
-      DeviceNode->ResourceRequirementsList =
+      DeviceNode->ResourceRequirements =
          (PIO_RESOURCE_REQUIREMENTS_LIST)IoStatusBlock.Information;
    }
    else
    {
       DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
-      DeviceNode->ResourceRequirementsList = NULL;
+      DeviceNode->ResourceRequirements = NULL;
    }
 
-   /*
-    * Assemble the instance path for the device
-    */
-
-   wcscpy(InstancePath, DeviceNode->DeviceID.Buffer);
-   wcscat(InstancePath, L"\\");
-   wcscat(InstancePath, DeviceNode->InstanceID.Buffer);
-
-   if (!DeviceNode->CapabilityFlags->UniqueID)
-   {
-      DPRINT("Instance ID is not unique\n");
-      /* FIXME: Add information from parent bus driver to InstancePath */
-   }
 
-   if (!IopCreateUnicodeString(&DeviceNode->InstancePath, InstancePath, PagedPool))
+   if (InstanceKey != NULL)
    {
-      DPRINT("No resources\n");
-      /* FIXME: Cleanup and disable device */
+      IopSetDeviceInstanceData(InstanceKey, DeviceNode);
    }
 
-   DPRINT("InstancePath is %S\n", DeviceNode->InstancePath.Buffer);
+   ZwClose(InstanceKey);
 
-   /*
-    * Create registry key for the instance id, if it doesn't exist yet
-    */
-
-   KeyBuffer = ExAllocatePool(
-      PagedPool,
-      (49 * sizeof(WCHAR)) + DeviceNode->InstancePath.Length);
-   wcscpy(KeyBuffer, L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
-   wcscat(KeyBuffer, DeviceNode->InstancePath.Buffer);
-   IopCreateDeviceKeyPath(KeyBuffer);
-   ExFreePool(KeyBuffer);
    DeviceNode->Flags |= DNF_PROCESSED;
 
+   /* Report the device to the user-mode pnp manager */
+   IopQueueTargetDeviceEvent(&GUID_DEVICE_ARRIVAL,
+                             &DeviceNode->InstancePath);
+
    return STATUS_SUCCESS;
 }
 
@@ -1043,6 +1382,13 @@ IopActionConfigureChildServices(
 
    if (!IopDeviceNodeHasFlag(DeviceNode, DNF_DISABLED))
    {
+      WCHAR RegKeyBuffer[MAX_PATH];
+      UNICODE_STRING RegKey;
+      
+      RegKey.Length = 0;
+      RegKey.MaximumLength = sizeof(RegKeyBuffer);
+      RegKey.Buffer = RegKeyBuffer;
+      
       /*
        * Retrieve configuration from Enum key
        */
@@ -1056,8 +1402,11 @@ IopActionConfigureChildServices(
       QueryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
       QueryTable[0].EntryContext = Service;
 
-      Status = RtlQueryRegistryValues(RTL_REGISTRY_ENUM,
-         DeviceNode->InstancePath.Buffer, QueryTable, NULL, NULL);
+      RtlAppendUnicodeToString(&RegKey, L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
+      RtlAppendUnicodeStringToString(&RegKey, &DeviceNode->InstancePath);
+
+      Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
+         RegKey.Buffer, QueryTable, NULL, NULL);
 
       if (!NT_SUCCESS(Status))
       {
@@ -1212,7 +1561,6 @@ IopActionInitAllServices(
  * parent node. This function just calls IopActionInitChildServices with
  * BootDrivers = TRUE.
  */
-
 NTSTATUS
 IopActionInitBootServices(
    PDEVICE_NODE DeviceNode,
@@ -1237,7 +1585,6 @@ IopActionInitBootServices(
  * Return Value
  *    Status
  */
-
 NTSTATUS
 IopInitializePnpServices(
    IN PDEVICE_NODE DeviceNode,
@@ -1291,7 +1638,7 @@ IopInvalidateDeviceRelations(
    Stack.Parameters.QueryDeviceRelations.Type = Type/*BusRelations*/;
 
    Status = IopInitiatePnpIrp(
-      DeviceNode->Pdo,
+      DeviceNode->PhysicalDeviceObject,
       &IoStatusBlock,
       IRP_MN_QUERY_DEVICE_RELATIONS,
       &Stack);
@@ -1386,17 +1733,20 @@ IopInvalidateDeviceRelations(
       NULL,
       NULL);
 
-   Status = NtOpenFile(
+   Status = ZwOpenFile(
       &Handle,
       FILE_ALL_ACCESS,
       &ObjectAttributes,
       &IoStatusBlock,
       0,
       0);
-   BootDrivers = NT_SUCCESS(Status) ? FALSE : TRUE;
-
-   NtClose(Handle);
+   if(NT_SUCCESS(Status))
+   {
+     BootDrivers = FALSE;
+     ZwClose(Handle);
+   }
+   else
+     BootDrivers = TRUE;
 
    /*
     * Initialize services for discovered children. Only boot drivers will
@@ -1424,6 +1774,14 @@ PnpInit(VOID)
 
    KeInitializeSpinLock(&IopDeviceTreeLock);
 
+   /* Initialize PnP-Event notification support */
+   Status = IopInitPlugPlayEvents();
+   if (!NT_SUCCESS(Status))
+   {
+      CPRINT("IopInitPlugPlayEvents() failed\n");
+      KEBUGCHECKEX(PHASE1_INITIALIZATION_FAILED, Status, 0, 0, 0);
+   }
+
    /*
     * Create root device node
     */
@@ -1450,11 +1808,23 @@ PnpInit(VOID)
       KEBUGCHECKEX(PHASE1_INITIALIZATION_FAILED, Status, 0, 0, 0);
    }
 
-   IopRootDeviceNode->Pdo->Flags |= DO_BUS_ENUMERATED_DEVICE;
+   if (!IopCreateUnicodeString(&IopRootDeviceNode->InstancePath,
+       L"HTREE\\Root\\0",
+       PagedPool))
+   {
+     CPRINT("Failed to create the instance path!\n");
+     KEBUGCHECKEX(PHASE1_INITIALIZATION_FAILED, STATUS_UNSUCCESSFUL, 0, 0, 0);
+   }
+
+   /* Report the device to the user-mode pnp manager */
+   IopQueueTargetDeviceEvent(&GUID_DEVICE_ARRIVAL,
+                             &IopRootDeviceNode->InstancePath);
+
+   IopRootDeviceNode->PhysicalDeviceObject->Flags |= DO_BUS_ENUMERATED_DEVICE;
    PnpRootDriverEntry(IopRootDriverObject, NULL);
    IopRootDriverObject->DriverExtension->AddDevice(
       IopRootDriverObject,
-      IopRootDeviceNode->Pdo);
+      IopRootDeviceNode->PhysicalDeviceObject);
 }
 
 /* EOF */