--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/tools/jar/UpdateJar.java	Thu Jun 28 22:44:21 2012 -0700
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ * 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.
+ */
+
+/**
+ * @test
+ * @bug 7175845
+ * @summary jar -uf should not change file permission
+ */
+
+import java.io.*;
+import java.nio.file.*;
+import java.nio.file.attribute.*;
+import java.util.Set;
+import sun.tools.jar.Main;
+
+public class UpdateJar {
+
+    private static void cleanup(String... fnames) throws Throwable {
+        for (String fname : fnames) {
+            Files.deleteIfExists(Paths.get(fname));
+        }
+    }
+
+    public static void realMain(String[] args) throws Throwable {
+        if (!System.getProperty("os.name").startsWith("Windows")) {
+            String jar = "testUpdateJar.jar";
+            String e0  = "testUpdateJar_entry0.txt";
+            String e1  = "testUpdateJar_entry1.txt";
+            cleanup(jar, e0, e1);
+            try {
+                try (FileOutputStream fos0 = new FileOutputStream(e0);
+                     FileOutputStream fos1 = new FileOutputStream(e1)) {
+                    fos0.write(0);
+                    fos1.write(0);
+                }
+                String[] jarArgs = new String[] {"cfM0", jar, e0};
+                if (!new Main(System.out, System.err, "jar").run(jarArgs)) {
+                    fail("Could not create jar file.");
+                }
+                Set<PosixFilePermission> pm = Files.getPosixFilePermissions(Paths.get(jar));
+                jarArgs = new String[] {"uf", jar, e1};
+                if (!new Main(System.out, System.err, "jar").run(jarArgs)) {
+                    fail("Could not create jar file.");
+                }
+                equal(pm, Files.getPosixFilePermissions(Paths.get(jar)));
+            } finally {
+                cleanup(jar, e0, e1);
+            }
+        }
+    }
+
+    //--------------------- Infrastructure ---------------------------
+    static volatile int passed = 0, failed = 0;
+    static void pass() {passed++;}
+    static void fail() {failed++; Thread.dumpStack();}
+    static void fail(String msg) {System.out.println(msg); fail();}
+    static void unexpected(Throwable t) {failed++; t.printStackTrace();}
+    static void check(boolean cond) {if (cond) pass(); else fail();}
+    static void equal(Object x, Object y) {
+        if (x == null ? y == null : x.equals(y)) pass();
+        else fail(x + " not equal to " + y);}
+    public static void main(String[] args) throws Throwable {
+        try {realMain(args);} catch (Throwable t) {unexpected(t);}
+        System.out.println("\nPassed = " + passed + " failed = " + failed);
+        if (failed > 0) throw new AssertionError("Some tests failed");}
+}