From d0da55a42739c54833b6cf3d02c874d65e605e2c Mon Sep 17 00:00:00 2001
From: Eric Kohl <eric.kohl@reactos.org>
Date: Mon, 15 Nov 2004 11:41:33 +0000
Subject: [PATCH] Add support for FILE_AUTOGENERATED_DEVICE_NAME to
 IoCreateDevice.

svn path=/trunk/; revision=11664
---
 reactos/ntoskrnl/io/device.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/reactos/ntoskrnl/io/device.c b/reactos/ntoskrnl/io/device.c
index eba6c987cab..aa2cd61583f 100644
--- a/reactos/ntoskrnl/io/device.c
+++ b/reactos/ntoskrnl/io/device.c
@@ -1,4 +1,4 @@
-/* $Id: device.c,v 1.83 2004/11/06 04:12:59 ion Exp $
+/* $Id: device.c,v 1.84 2004/11/15 11:41:33 ekohl Exp $
  *
  * COPYRIGHT:      See COPYING in the top level directory
  * PROJECT:        ReactOS kernel
@@ -19,6 +19,8 @@
 
 #define TAG_DEVICE_EXTENSION   TAG('D', 'E', 'X', 'T')
 
+static ULONG IopDeviceObjectNumber = 0;
+
 /* PRIVATE FUNCTIONS **********************************************************/
 
 NTSTATUS FASTCALL
@@ -532,6 +534,8 @@ IoCreateDevice(
    BOOLEAN Exclusive,
    PDEVICE_OBJECT *DeviceObject)
 {
+   WCHAR AutoNameBuffer[20];
+   UNICODE_STRING AutoName;
    PDEVICE_OBJECT CreatedDeviceObject;
    PDEVOBJ_EXTENSION DeviceObjectExtension;
    OBJECT_ATTRIBUTES ObjectAttributes;
@@ -549,6 +553,16 @@ IoCreateDevice(
       DPRINT("IoCreateDevice(DriverObject %x)\n",DriverObject);
    }
    
+   if (DeviceCharacteristics & FILE_AUTOGENERATED_DEVICE_NAME)
+   {
+      swprintf(AutoNameBuffer,
+               L"\\Device\\%08lx",
+               InterlockedIncrement(&IopDeviceObjectNumber));
+      RtlInitUnicodeString(&AutoName,
+                           AutoNameBuffer);
+      DeviceName = &AutoName;
+   }
+   
    if (DeviceName != NULL)
    {
       InitializeObjectAttributes(&ObjectAttributes, DeviceName, 0, NULL, NULL);