Runtime/exec/Duped.java

	Duped.java revision 0
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk/*
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * Copyright 1999-2001 Sun Microsystems, Inc.  All Rights Reserved.
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk *
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * This code is free software; you can redistribute it and/or modify it
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * under the terms of the GNU General Public License version 2 only, as
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * published by the Free Software Foundation.
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk *
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * This code is distributed in the hope that it will be useful, but WITHOUT
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * version 2 for more details (a copy is included in the LICENSE file that
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * accompanied this code).
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk *
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * You should have received a copy of the GNU General Public License version
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * 2 along with this work; if not, write to the Free Software Foundation,
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk *
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * CA 95054 USA or visit www.sun.com if you need additional information or
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk * have any questions.
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk */
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk/* @test
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk   @bug 4180429
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk   @summary Lossage in dup2 if System.in is closed.
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk   @run main/othervm Duped
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk */
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenkimport java.io.BufferedReader;
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenkimport java.io.PrintStream;
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenkimport java.io.InputStreamReader;
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenkimport java.io.File;
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenkpublic class Duped {
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk    public static class Echo {
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        public static void main(String args[]) throws Exception {
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            StringBuffer s = new StringBuffer();
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            int c;
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            while ((System.in.available() != 0)
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk                           && ((c = System.in.read()) != -1))
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk                s.append((char)c);
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            System.out.println(s);
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        }
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk    }
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk    public static void main(String[] args) throws Exception {
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        String command =
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            System.getProperty("java.home") +
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            File.separator +
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            "bin" +
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            File.separator +
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            "java -classpath " +
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            System.getProperty("java.class.path") +
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            " Duped$Echo";
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        if (args.length == 1 && args[0].equals("-dont")) {
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            /*
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk             * To quickly check that this test is working when it is
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk             * supposed to, just run it with -dont and it shouldn't
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk             * complain at all.
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk             */
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        } else {
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            /*
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk             * In normal runs we just close in, and that causes
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk             * lossage on fork.
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk             */
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            System.in.close();
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        }
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        Process p = Runtime.getRuntime().exec(command);
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        PrintStream out = new PrintStream(p.getOutputStream());
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        out.println(HELLO);
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        out.close();
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        BufferedReader in =
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            new BufferedReader(new InputStreamReader(p.getInputStream()));
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        String read = in.readLine();
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        if (!HELLO.equals(read)) {
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk            throw new Exception("Failed, read ``" + read + "''");
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk        }
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk    }
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk    static final String HELLO = "Hello, world!";
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk}
c1350cf5bc50458ba79cc93ff9e0e5fe3f1aeeb0jeff.schenk