119 lines
3.9 KiB
Java
119 lines
3.9 KiB
Java
/*
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* Copyright (c) 1997, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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@bug 4033560
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@summary 4033560 limited args of exec to 198 on Solaris. We check
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that we can actually exec more args than that.
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@requires vm.flagless
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@author Anand Palaniswamy
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@run main/othervm ExecWithLotsOfArgs
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*/
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.io.File;
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import java.io.IOException;
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public class ExecWithLotsOfArgs {
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public static class EchoingHelper {
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public static void main(String[] args) {
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for (int i = 0; i < args.length; i++) {
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System.out.println(args[i]);
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}
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}
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}
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public static void main(String[] args) throws Exception {
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String[] command = new String[300];
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int n = 0;
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/*
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* The Java program to exec. This is slightly fragile. Works
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* on Solaris and Win32.
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*/
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command[n++] = System.getProperty("java.home") + File.separator +
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"bin" + File.separator + "java";
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if (System.getProperty("java.class.path") != null) {
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command[n++] = "-classpath";
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command[n++] = System.getProperty("java.class.path");
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}
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/*
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* The class with main() that the exec'd VM will run.
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*/
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command[n++] = "ExecWithLotsOfArgs$EchoingHelper";
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/*
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* Make a long set of args n, n + 1, ... , 300.
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*/
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for (int i = n; i < command.length; i++) {
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command[i] = new String(new Integer(i).toString());
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}
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/*
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* Do the exec.
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*/
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Process p = null;
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p = Runtime.getRuntime().exec(command);
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BufferedReader in = new BufferedReader
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(new InputStreamReader(p.getInputStream()));
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/*
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* Read back all the strings and that the same were returned.
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*/
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String s;
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int count = n;
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while ((s = in.readLine()) != null) {
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if (count >= command.length) {
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failed("Was expecting " + (command.length - 2) +
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" strings to be echo'ed back, but got " +
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(count - 1) + " instead");
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}
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if (!s.equals(command[count])) {
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failed("Exec'd process returned \"" +
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s + "\", was expecting \"" +
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command[count] + "\"");
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}
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count++;
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}
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/*
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* Did we read anything at all?
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*/
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if (count == n) {
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/* Try reading the error stream to see if we got any diagnostics */
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in = new BufferedReader(new InputStreamReader(p.getErrorStream()));
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while ((s = in.readLine()) != null) {
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System.err.println("Error output: " + s);
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}
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failed("Exec'd process didn't writing anything to its stdout");
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}
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}
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private static void failed(String s) {
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throw new RuntimeException("Failed: " + s);
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}
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}
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