diff -r fd16c54261b3 -r 90ce3da70b43 jdk/test/java/io/RandomAccessFile/OpenSync.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/io/RandomAccessFile/OpenSync.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2001 Sun Microsystems, Inc.  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.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* @test
+ * @summary Unit test for RandomAccessFile open-sync modes
+ */
+
+import java.io.*;
+
+
+public class OpenSync {
+
+    static PrintStream log = System.err;
+
+    public static void main(String[] args) throws Exception {
+
+        File blah = File.createTempFile("OpenSync", null);
+        blah.deleteOnExit();
+
+        String[] badModes = { "d", "s", "rd", "rs", "rwx", "foo" };
+        for (int i = 0; i < badModes.length; i++) {
+            String mode = badModes[i];
+            try {
+                new RandomAccessFile(blah, mode);
+            } catch (IllegalArgumentException x) {
+                log.println("Mode \"" + mode +"\": Thrown as expected: "
+                            + x.getClass().getName());
+                log.println("  " + x.getMessage());
+                continue;
+            }
+            throw new Exception("Exception not thrown for illegal mode "
+                                + mode);
+        }
+
+        new RandomAccessFile(blah, "rw").close();
+        new RandomAccessFile(blah, "r").close();
+
+        String hi = "Hello, world!";
+        RandomAccessFile raf = new RandomAccessFile(blah, "rws");
+        raf.writeUTF(hi);
+        raf.close();
+
+        raf = new RandomAccessFile(blah, "rwd");
+        if (!raf.readUTF().equals(hi))
+            throw new Exception("File content mismatch");
+        raf.close();
+
+    }
+
+}