IoAssignResources Source code

NTSTATUS __stdcall IoAssignResources(PUNICODE_STRING RegistryPath, PUNICODE_STRING DriverClassName, PDRIVER_OBJECT DriverObject, PDEVICE_OBJECT DeviceObject, PIO_RESOURCE_REQUIREMENTS_LIST RequestedResources, PCM_RESOURCE_LIST *AllocatedResources)
{
  __int16 v6; // bx@1
  PDEVICE_NODE DeviceNode; // eax@2
  char *DriverName; // eax@9
  PDEVICE_NODE v9; // eax@11
  PUNICODE_STRING InstancePath; // eax@12
  PUNICODE_STRING ServiceName; // eax@14
  PDEVICE_NODE ParentDeviceNode; // eax@16
  USHORT *Length; // eax@17

  v6 = 0;
  if ( DeviceObject )
  {
    DeviceNode = DeviceObject->DeviceObjectExtension->DeviceNode;
    if ( DeviceNode )
    {
      if ( !(BYTE2(DeviceNode->Flags) & 2) )
      {
        if ( DriverObject )
        {
          IoAddTriageDumpDataBlock(DriverObject, DriverObject->Size);
          if ( DriverObject->DriverName.Length )
          {
            IoAddTriageDumpDataBlock(&DriverObject->DriverName, 2);
            IoAddTriageDumpDataBlock(DriverObject->DriverName.Buffer, DriverObject->DriverName.Length);
          }
          v6 = 0;
        }
        IoAddTriageDumpDataBlock(DeviceObject, DeviceObject->Size);
        if ( DeviceObject->DriverObject )
        {
          IoAddTriageDumpDataBlock(DeviceObject->DriverObject, DeviceObject->DriverObject->Size);
          DriverName = &DeviceObject->DriverObject->DriverName;
          if ( *DriverName != v6 )
          {
            IoAddTriageDumpDataBlock(DriverName, 2);
            IoAddTriageDumpDataBlock(
              DeviceObject->DriverObject->DriverName.Buffer,
              DeviceObject->DriverObject->DriverName.Length);
          }
        }
        v9 = DeviceObject->DeviceObjectExtension->DeviceNode;
        if ( v9 )
        {
          IoAddTriageDumpDataBlock(v9, 292);
          InstancePath = &DeviceObject->DeviceObjectExtension->DeviceNode->InstancePath;
          if ( InstancePath->Length )
          {
            IoAddTriageDumpDataBlock(InstancePath, 2);
            IoAddTriageDumpDataBlock(
              DeviceObject->DeviceObjectExtension->DeviceNode->InstancePath.Buffer,
              DeviceObject->DeviceObjectExtension->DeviceNode->InstancePath.Length);
          }
          ServiceName = &DeviceObject->DeviceObjectExtension->DeviceNode->ServiceName;
          if ( ServiceName->Length )
          {
            IoAddTriageDumpDataBlock(ServiceName, 2);
            IoAddTriageDumpDataBlock(
              DeviceObject->DeviceObjectExtension->DeviceNode->ServiceName.Buffer,
              DeviceObject->DeviceObjectExtension->DeviceNode->ServiceName.Length);
          }
          ParentDeviceNode = DeviceObject->DeviceObjectExtension->DeviceNode->Parent;
          if ( ParentDeviceNode )
          {
            Length = &ParentDeviceNode->ServiceName.Length;
            if ( *Length )
            {
              IoAddTriageDumpDataBlock(Length, 2);
              IoAddTriageDumpDataBlock(
                DeviceObject->DeviceObjectExtension->DeviceNode->Parent->ServiceName.Buffer,
                DeviceObject->DeviceObjectExtension->DeviceNode->Parent->ServiceName.Length);
            }
          }
        }
        KeBugCheckEx(202u, 2u, DeviceObject, 0, 0);
      }
    }
  }
  if ( RequestedResources && (!RequestedResources->AlternativeLists || !RequestedResources->List[0].Count) )
    RequestedResources = 0;
  if ( AllocatedResources )
    *AllocatedResources = 0;
  return IopLegacyResourceAllocation(2, DriverObject, DeviceObject, RequestedResources, AllocatedResources);
}