--- old/src/java.base/unix/native/libjava/jni_util_md.c	2014-10-06 03:11:09.104983069 -0700
+++ new/src/java.base/unix/native/libjava/jni_util_md.c	2014-10-06 03:11:08.789983895 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2014, 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
@@ -23,6 +23,7 @@
  * questions.
  */
 
+#include <errno.h>
 #include <string.h>
 
 #include "jni.h"
@@ -51,3 +52,17 @@
     }
 }
 
+size_t
+getLastErrorString(char *buf, size_t len)
+{
+    if (errno == 0 || len < 1) return 0;
+
+    const char *err = strerror(errno);
+    size_t n = strlen(err);
+    if (n >= len)
+        n = len - 1;
+
+    strncpy(buf, err, n);
+    buf[n] = '\0';
+    return n;
+}