1 /*
  2  * Copyright (c) 2002, 2023, 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
 26  * @bug 4680945 4873419
 27  * @summary Check process exit code
 28  * @requires vm.flagless
 29  * @author kladko, Martin Buchholz
 30  */
 31 
 32 import java.io.File;
 33 
 34 public class ExitValue
 35 {
 36 
 37     public static String join(String separator, String[] elts) {
 38         String result = elts[0];
 39         for (int i = 1; i < elts.length; ++i)
 40             result = result + separator + elts[i];
 41         return result;
 42     }
 43 
 44     public static void checkExitValue(String[] commandArgs,
 45                                       int expectedExitValue)
 46         throws Exception
 47     {
 48         if (! (new File(commandArgs[0]).exists()))
 49             return;
 50 
 51         System.out.println("Running command: " + join(" ", commandArgs));
 52         Process proc = Runtime.getRuntime().exec(commandArgs);
 53         int val;
 54         byte[] buf = new byte[4096];
 55         int n = proc.getErrorStream().read(buf);
 56         if (n > 0)
 57             throw new Exception
 58                 ("Unexpected stderr: "
 59                  + new String(buf, 0, n, "ASCII"));
 60         if ((val = proc.waitFor()) != expectedExitValue)
 61             throw new Exception
 62                 ("waitFor() returned unexpected value " + val);
 63         if ((val = proc.exitValue()) != expectedExitValue)
 64             throw new Exception
 65                 ("exitValue() returned unexpected value " + val);
 66     }
 67 
 68     public static void checkPosixShellExitValue(String posixShellProgram,
 69                                                 int expectedExitValue)
 70         throws Exception
 71     {
 72         checkExitValue(new String[] { UnixCommands.sh(), "-c", posixShellProgram },
 73                        expectedExitValue);
 74     }
 75 
 76     static final int EXIT_CODE = 5;
 77 
 78     public static void main(String[] args) throws Exception {
 79         if (! UnixCommands.isUnix) {
 80             System.out.println("For UNIX only");
 81             return;
 82         }
 83         UnixCommands.ensureCommandsAvailable("sh", "true", "kill");
 84 
 85         String java = join(File.separator, new String []
 86             { System.getProperty("java.home"), "bin", "java" });
 87 
 88         checkExitValue(new String[]
 89             { java,
 90               "-classpath", System.getProperty("test.classes", "."),
 91               "ExitValue$Run", String.valueOf(EXIT_CODE)
 92             }, EXIT_CODE);
 93 
 94         checkExitValue(new String[] { UnixCommands.findCommand("true") }, 0);
 95 
 96         checkPosixShellExitValue("exit", 0);
 97 
 98         checkPosixShellExitValue("exit 7", 7);
 99 
100         int sigoffset = 128;
101         checkPosixShellExitValue(UnixCommands.kill() + " -9 $$", sigoffset+9);
102     }
103 
104     public static class Run {
105         public static void main (String[] argv) {
106             System.exit(Integer.parseInt(argv[0]));
107         }
108     }
109 }