[PATCH v2 1/7] ntdll: Introduce RtlSetLastWin32Error for unixlibs that additionally sets 32-bit error on wow64.

[Jacek Caban]

From: Jacek Caban

---
 dlls/ntdll/unix/env.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/dlls/ntdll/unix/env.c b/dlls/ntdll/unix/env.c
index 17450b5ab4c..105038a34cb 100644
--- a/dlls/ntdll/unix/env.c
+++ b/dlls/ntdll/unix/env.c
@@ -2390,3 +2390,19 @@ ULONG WINAPI RtlNtStatusToDosError( NTSTATUS status )

return map_status( status );
 }
+
+/**********************************************************************
+ *      RtlSetLastWin32Error  (ntdll.so)
+ */
+void WINAPI RtlSetLastWin32Error( DWORD err )
+{
+    TEB *teb = NtCurrentTeb();
+#ifdef _WIN64
+    if (teb->WowTebOffset)
+    {
+        TEB32 *teb32 = (TEB32 *)((char *)teb + teb->WowTebOffset);
+        teb32->LastErrorValue = err;
+    }
+#endif
+    teb->LastErrorValue = err;
+}