1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test Testexecstack.java
  26  * @summary Searches for all libraries in test VM and checks that they
  27  *          have the noexecstack bit set.
  28  * @requires (os.family == "linux")
  29  * @library /test/lib
  30  * @modules java.base/jdk.internal.misc
  31  * @build sun.hotspot.WhiteBox
  32  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  33  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  35  *                   TestCheckJDK
  36  */
  37 
  38 import jdk.test.lib.Asserts;
  39 import sun.hotspot.WhiteBox;
  40 
  41 import java.nio.file.Files;
  42 import java.nio.file.Path;
  43 import java.nio.file.Paths;
  44 
  45 public class TestCheckJDK {
  46     static boolean testPassed = true;
  47     private static final WhiteBox WB = WhiteBox.getWhiteBox();
  48 
  49     static void checkExecStack(Path file) {
  50         String filename = file.toString();
  51         if (filename.endsWith(".so")) {
  52             if (!WB.checkLibSpecifiesNoexecstack(filename)) {
  53                 System.out.println("Library does not have the noexecstack bit set: " + filename);
  54                 testPassed = false;
  55             }
  56         }
  57     }
  58 
  59     public static void main(String[] args) throws Throwable {
  60         String vmInstallDir = System.getProperty("java.home");
  61 
  62         Files.walk(Paths.get(vmInstallDir)).filter(Files::isRegularFile).forEach(TestCheckJDK::checkExecStack);
  63 
  64         Asserts.assertTrue(testPassed,
  65             "The tested VM contains libs that don't have the noexecstack " +
  66             "bit set. They must be linked with -z,noexecstack.");
  67     }
  68 }