如何让两个应用程序都可以createfile一个packet驱动程序的句柄？

我有两个应用程序都要用到packet驱动程序，可是一个应用程序createfile成功了之后，另外一个就失败了，
请问有什么最简洁的方法可以让两个应用程序都可以createfile呢？

IoCreateDevice
NTSTATUS
  IoCreateDevice(
  IN PDRIVER_OBJECT  DriverObject,
  IN ULONG  DeviceExtensionSize,
  IN PUNICODE_STRING  DeviceName  OPTIONAL,
  IN DEVICE_TYPE  DeviceType,
  IN ULONG  DeviceCharacteristics,
  IN BOOLEAN  Exclusive,
  OUT PDEVICE_OBJECT  *DeviceObject
  );
将倒数第二个参数Exclusive置为FALSE即可。

Exclusive
Indicates whether the device object represents an exclusive device. That is, only one handle at a time can send I/O requests to the corresponding device object. If the underlying device supports overlapped I/O, multiple threads of the same process can send requests through a single handle.