--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.security.jgss/windows/native/libw2k_lsa_auth/WindowsDirectory.c	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2005, 2009, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#define UNICODE
+#include <jni.h>
+#include <windows.h>
+#include <stdlib.h>
+
+/*
+ * Class:     sun_security_krb5_Config
+ * Method:    getWindowsDirectory
+ * Signature: (Z)Ljava/lang/String;
+ */
+JNIEXPORT jstring JNICALL Java_sun_security_krb5_Config_getWindowsDirectory(
+        JNIEnv* env, jclass configClass, jboolean isSystem) {
+    TCHAR lpPath[MAX_PATH+1];
+    UINT len;
+    if (isSystem) {
+        len = GetSystemWindowsDirectory(lpPath, MAX_PATH);
+    } else {
+        len = GetWindowsDirectory(lpPath, MAX_PATH);
+    }
+    if (len) {
+        return (*env)->NewString(env, lpPath, len);
+    } else {
+        return NULL;
+    }
+}