From 40c97121419916d24f6ff17422847d52b5ddef72 Mon Sep 17 00:00:00 2001
From: Mark Jansen <learn0more@gmail.com>
Date: Sun, 18 Dec 2016 21:02:47 +0100
Subject: [PATCH] [SDK][KERNEL32] Add defines for PEB.AppCompatFlags

---
 reactos/dll/win32/kernel32/client/path.c |  2 +-
 reactos/sdk/include/ndk/pstypes.h        | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/reactos/dll/win32/kernel32/client/path.c b/reactos/dll/win32/kernel32/client/path.c
index 882d432..30199b2 100644
--- a/reactos/dll/win32/kernel32/client/path.c
+++ b/reactos/dll/win32/kernel32/client/path.c
@@ -1861,7 +1861,7 @@ GetShortPathNameW(IN LPCWSTR lpszLongPath,
     if (GetFileAttributesW(lpszLongPath) == INVALID_FILE_ATTRIBUTES)
     {
         /* Windows checks for an application compatibility flag to allow this */
-        if (!(NtCurrentPeb()) || !(NtCurrentPeb()->AppCompatFlags.LowPart & 1))
+        if (!(NtCurrentPeb()) || !(NtCurrentPeb()->AppCompatFlags.LowPart & GetShortPathNameNT4))
         {
             /* It doesn't, so fail */
             ReturnLength = 0;
diff --git a/reactos/sdk/include/ndk/pstypes.h b/reactos/sdk/include/ndk/pstypes.h
index 48ea19c..b5e924c 100644
--- a/reactos/sdk/include/ndk/pstypes.h
+++ b/reactos/sdk/include/ndk/pstypes.h
@@ -735,6 +735,31 @@ typedef struct _Wx86ThreadState
 } Wx86ThreadState, *PWx86ThreadState;
 #endif
 
+//
+// PEB.AppCompatFlags
+// Tag FLAG_MASK_KERNEL
+//
+typedef enum _APPCOMPAT_FLAGS
+{
+    GetShortPathNameNT4 = 0x1,
+    GetDiskFreeSpace2GB = 0x8,
+    FTMFromCurrentAPI = 0x20,
+    DisallowCOMBindingNotifications = 0x40,
+    Ole32ValidatePointers = 0x80,
+    DisableCicero = 0x100,
+    Ole32EnableAsyncDocFile = 0x200,
+    EnableLegacyExceptionHandlinginOLE = 0x400,
+    DisableAdvanceRPCClientHardening = 0x800,
+    DisableMaybeNULLSizeisConsistencycheck = 0x1000,
+    DisableAdvancedRPCrangeCheck = 0x4000,
+    EnableLegacyExceptionHandlingInRPC = 0x8000,
+    EnableLegacyNTFSFlagsForDocfileOpens = 0x10000,
+    DisableNDRIIDConsistencyCheck = 0x20000,
+    UserDisableForwarderPatch = 0x40000,
+    DisableNewWMPAINTDispatchInOLE = 0x100000,
+    DoNotAddToCache = 0x80000000,
+} APPCOMPAT_FLAGS;
+
 
 //
 // Process Environment Block (PEB)
-- 
2.7.0.windows.2