1 /*
  2  * Copyright (c) 2002, 2020, 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  * @author kladko, Martin Buchholz
 29  */
 30 
 31 import java.io.File;
 32 
 33 public class ExitValue
 34 {
 35 
 36     public static String join(String separator, String[] elts) {
 37         String result = elts[0];
 38         for (int i = 1; i < elts.length; ++i)
 39             result = result + separator + elts[i];
 40         return result;
 41     }
 42 
 43     public static void checkExitValue(String[] commandArgs,
 44                                       int expectedExitValue)
 45         throws Exception
 46     {
 47         if (! (new File(commandArgs[0]).exists()))
 48             return;
 49 
 50         System.out.println("Running command: " + join(" ", commandArgs));
 51         Process proc = Runtime.getRuntime().exec(commandArgs);
 52         int val;
 53         byte[] buf = new byte[4096];
 54         int n = proc.getErrorStream().read(buf);
 55         if (n > 0)
 56             throw new Exception
 57                 ("Unexpected stderr: "
 58                  + new String(buf, 0, n, "ASCII"));
 59         if ((val = proc.waitFor()) != expectedExitValue)
 60             throw new Exception
 61                 ("waitFor() returned unexpected value " + val);
 62         if ((val = proc.exitValue()) != expectedExitValue)
 63             throw new Exception
 64                 ("exitValue() returned unexpected value " + val);
 65     }
 66 
 67     public static void checkPosixShellExitValue(String posixShellProgram,
 68                                                 int expectedExitValue)
 69         throws Exception
 70     {
 71         checkExitValue(new String[] { UnixCommands.sh(), "-c", posixShellProgram },
 72                        expectedExitValue);
 73     }
 74 
 75     static final int EXIT_CODE = 5;
 76 
 77     public static void main(String[] args) throws Exception {
 78         if (! UnixCommands.isUnix) {
 79             System.out.println("For UNIX only");
 80             return;
 81         }
 82         UnixCommands.ensureCommandsAvailable("sh", "true", "kill");
 83 
 84         String java = join(File.separator, new String []
 85             { System.getProperty("java.home"), "bin", "java" });
 86 
 87         checkExitValue(new String[]
 88             { java,
 89               "-classpath", System.getProperty("test.classes", "."),
 90               "ExitValue$Run", String.valueOf(EXIT_CODE)
 91             }, EXIT_CODE);
 92 
 93         checkExitValue(new String[] { UnixCommands.findCommand("true") }, 0);
 94 
 95         checkPosixShellExitValue("exit", 0);
 96 
 97         checkPosixShellExitValue("exit 7", 7);
 98 
 99         int sigoffset = 128;
100         checkPosixShellExitValue(UnixCommands.kill() + " -9 $$", sigoffset+9);
101     }
102 
103     public static class Run {
104         public static void main (String[] argv) {
105             System.exit(Integer.parseInt(argv[0]));
106         }
107     }
108 }