[fireball] 53781: [NTDLL/LDR] - Properly wrap potentially unsafe buffer usage into SEH. Spotted by Pierre.

Author: fireball
Date: Tue Sep 20 21:04:33 2011
New Revision: 53781

URL: http://svn.reactos.org/svn/reactos?rev=53781&view=rev
Log:
[NTDLL/LDR]
- Properly wrap potentially unsafe buffer usage into SEH. Spotted by Pierre.

Modified:
    trunk/reactos/dll/ntdll/ldr/ldrapi.c

Modified: trunk/reactos/dll/ntdll/ldr/ldrapi.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/ntdll/ldr/ldrapi.c?rev=...
==============================================================================
--- trunk/reactos/dll/ntdll/ldr/ldrapi.c [iso-8859-1] (original)
+++ trunk/reactos/dll/ntdll/ldr/ldrapi.c [iso-8859-1] Tue Sep 20 21:04:33 2011
@@ -911,7 +911,7 @@
 NTAPI
 LdrQueryProcessModuleInformationEx(IN ULONG ProcessId,
                                    IN ULONG Reserved,
-                                   IN PRTL_PROCESS_MODULES ModuleInformation,
+                                   OUT PRTL_PROCESS_MODULES ModuleInformation,
                                    IN ULONG Size,
                                    OUT PULONG ReturnedSize OPTIONAL)
 {
@@ -929,21 +929,21 @@
     /* Acquire loader lock */
     RtlEnterCriticalSection(NtCurrentPeb()->LoaderLock);

-    /* Check if we were given enough space */
-    if (Size < UsedSize)
-    {
-        Status = STATUS_INFO_LENGTH_MISMATCH;
-    }
-    else
-    {
-        ModuleInformation->NumberOfModules = 0;
-        ModulePtr = &ModuleInformation->Modules[0];
-        Status = STATUS_SUCCESS;
-    }
-
-    /* Traverse the list of modules */
     _SEH2_TRY
     {
+        /* Check if we were given enough space */
+        if (Size < UsedSize)
+        {
+            Status = STATUS_INFO_LENGTH_MISMATCH;
+        }
+        else
+        {
+            ModuleInformation->NumberOfModules = 0;
+            ModulePtr = &ModuleInformation->Modules[0];
+            Status = STATUS_SUCCESS;
+        }
+
+        /* Traverse the list of modules */
         ModuleListHead = &NtCurrentPeb()->Ldr->InLoadOrderModuleList;
         Entry = ModuleListHead->Flink;