| /* |
| * Copyright (c) 1997, 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 4033560 |
| @summary 4033560 limited args of exec to 198 on Solaris. We check |
| that we can actually exec more args than that. |
| @author Anand Palaniswamy |
| @run main/othervm ExecWithLotsOfArgs |
| */ |
| |
| import java.io.BufferedReader; |
| import java.io.InputStreamReader; |
| import java.io.File; |
| import java.io.IOException; |
| |
| public class ExecWithLotsOfArgs { |
| |
| public static class EchoingHelper { |
| public static void main(String[] args) { |
| for (int i = 0; i < args.length; i++) { |
| System.out.println(args[i]); |
| } |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| String[] command = new String[300]; |
| int n = 0; |
| |
| /* |
| * The Java program to exec. This is slightly fragile. Works |
| * on Solaris and Win32. |
| */ |
| command[n++] = System.getProperty("java.home") + File.separator + |
| "bin" + File.separator + "java"; |
| if (System.getProperty("java.class.path") != null) { |
| command[n++] = "-classpath"; |
| command[n++] = System.getProperty("java.class.path"); |
| } |
| |
| /* |
| * The class with main() that the exec'd VM will run. |
| */ |
| command[n++] = "ExecWithLotsOfArgs$EchoingHelper"; |
| |
| /* |
| * Make a long set of args n, n + 1, ... , 300. |
| */ |
| for (int i = n; i < command.length; i++) { |
| command[i] = new String(new Integer(i).toString()); |
| } |
| |
| /* |
| * Do the exec. |
| */ |
| Process p = null; |
| p = Runtime.getRuntime().exec(command); |
| BufferedReader in = new BufferedReader |
| (new InputStreamReader(p.getInputStream())); |
| |
| /* |
| * Read back all the strings and that the same were returned. |
| */ |
| String s; |
| int count = n; |
| while ((s = in.readLine()) != null) { |
| if (count >= command.length) { |
| failed("Was expecting " + (command.length - 2) + |
| " strings to be echo'ed back, but got " + |
| (count - 1) + " instead"); |
| } |
| if (!s.equals(command[count])) { |
| failed("Exec'd process returned \"" + |
| s + "\", was expecting \"" + |
| command[count] + "\""); |
| } |
| count++; |
| } |
| |
| /* |
| * Did we read anything at all? |
| */ |
| if (count == n) { |
| /* Try reading the error stream to see if we got any diagnostics */ |
| in = new BufferedReader(new InputStreamReader(p.getErrorStream())); |
| while ((s = in.readLine()) != null) { |
| System.err.println("Error output: " + s); |
| } |
| failed("Exec'd process didn't writing anything to its stdout"); |
| } |
| } |
| |
| private static void failed(String s) { |
| throw new RuntimeException("Failed: " + s); |
| } |
| } |