[tfaber] 69883: [NTOS:KD] - Actually write back the response to the user buffer in KdpPrompt

Author: tfaber
Date: Sat Nov 14 08:55:46 2015
New Revision: 69883

URL: http://svn.reactos.org/svn/reactos?rev=69883&view=rev
Log:
[NTOS:KD]
- Actually write back the response to the user buffer in KdpPrompt

Modified:
    trunk/reactos/ntoskrnl/kd64/kdprint.c

Modified: trunk/reactos/ntoskrnl/kd64/kdprint.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/kd64/kdprint.c?re…
==============================================================================
--- trunk/reactos/ntoskrnl/kd64/kdprint.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/kd64/kdprint.c	[iso-8859-1] Sat Nov 14 08:55:46 2015
@@ -212,7 +212,7 @@
 NTAPI
 KdpPrompt(IN LPSTR PromptString,
           IN USHORT PromptLength,
-          OUT LPSTR ResponseString,
+          OUT PCHAR ResponseString,
           IN USHORT MaximumResponseLength,
           IN KPROCESSOR_MODE PreviousMode,
           IN PKTRAP_FRAME TrapFrame,
@@ -220,7 +220,8 @@
 {
     STRING PromptBuffer, ResponseBuffer;
     BOOLEAN Enable, Resend;
-    PVOID CapturedPrompt, CapturedResponse;
+    PVOID CapturedPrompt;
+    PCHAR SafeResponseString;
 
     /* Normalize the lengths */
     PromptLength = min(PromptLength,
@@ -250,8 +251,7 @@
             ProbeForWrite(ResponseString,
                           MaximumResponseLength,
                           1);
-            CapturedResponse = _alloca(MaximumResponseLength);
-            ResponseString = CapturedResponse;
+            SafeResponseString = _alloca(MaximumResponseLength);
         }
         _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
         {
@@ -259,12 +259,16 @@
             _SEH2_YIELD(return 0);
         }
         _SEH2_END;
+    }
+    else
+    {
+        SafeResponseString = ResponseString;
     }
 
     /* Setup the prompt and response  buffers */
     PromptBuffer.Buffer = PromptString;
     PromptBuffer.Length = PromptLength;
-    ResponseBuffer.Buffer = ResponseString;
+    ResponseBuffer.Buffer = SafeResponseString;
     ResponseBuffer.Length = 0;
     ResponseBuffer.MaximumLength = MaximumResponseLength;