From 3d046e0ed2a8aa0a380fe6c008c6bc207d53ec9e Mon Sep 17 00:00:00 2001
From: Victor Perevertkin <victor.perevertkin@reactos.org>
Date: Sat, 16 Nov 2019 23:52:03 +0300
Subject: [PATCH] [NTOS:IO] Fix result length for DevicePropertyRemovalPolicy
 request in IoGetDeviceProperty. Classpnp expects it to be
 sizeof(DEVICE_REMOVAL_POLICY) see ClasspInitializeHotplugInfo in classpnp.sys

CORE-6264
---
 ntoskrnl/io/pnpmgr/pnpmgr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ntoskrnl/io/pnpmgr/pnpmgr.c b/ntoskrnl/io/pnpmgr/pnpmgr.c
index 56b3561fefe..b08f63eb289 100644
--- a/ntoskrnl/io/pnpmgr/pnpmgr.c
+++ b/ntoskrnl/io/pnpmgr/pnpmgr.c
@@ -4240,6 +4240,7 @@ IoGetDeviceProperty(IN PDEVICE_OBJECT DeviceObject,
     GUID BusTypeGuid;
     POBJECT_NAME_INFORMATION ObjectNameInfo = NULL;
     BOOLEAN NullTerminate = FALSE;
+    DEVICE_REMOVAL_POLICY Policy;
 
     DPRINT("IoGetDeviceProperty(0x%p %d)\n", DeviceObject, DeviceProperty);
 
@@ -4357,7 +4358,9 @@ IoGetDeviceProperty(IN PDEVICE_OBJECT DeviceObject,
             break;
 
         case DevicePropertyRemovalPolicy:
-            PIP_RETURN_DATA(sizeof(UCHAR), &DeviceNode->RemovalPolicy);
+
+            Policy = DeviceNode->RemovalPolicy;
+            PIP_RETURN_DATA(sizeof(Policy), &Policy);
 
         /* Handle the registry-based properties */
         case DevicePropertyUINumber: