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65 lines
2.7 KiB
Java
65 lines
2.7 KiB
Java
/*
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* Copyright (c) 2025, 2026, 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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/**
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* @test id=posix_spawn
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* @summary Check that we don't leak FDs to child processes
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* @requires os.family != "windows"
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* @library /test/lib
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* @run main/othervm/native -Djdk.lang.Process.launchMechanism=posix_spawn -agentlib:FDLeaker FDLeakTest
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*/
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/**
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* @test id=fork
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* @summary Check that we don't leak FDs to child processes
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* @requires os.family != "windows"
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* @library /test/lib
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* @run main/othervm/native -Djdk.lang.Process.launchMechanism=fork -agentlib:FDLeaker FDLeakTest
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*/
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import jdk.test.lib.process.ProcessTools;
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public class FDLeakTest {
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// This test has two native parts:
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// - a library invoked with -agentlib that ensures that, in the parent JVM, we open
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// a native fd without setting FD_CLOEXEC (libFDLeaker.c). This is necessary because
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// there is no way to do this from Java: if Java functions correctly, all files the
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// user could open via its APIs should be marked with FD_CLOEXEC.
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// - a small native executable that tests - without using /proc - whether any file
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// descriptors other than stdin/out/err are open.
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//
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// What should happen: In the child process, between the initial fork and the exec of
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// the target binary, we should close all filedescriptors that are not stdin/out/err.
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// If that works, the child process should not see any other file descriptors save
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// those three.
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public static void main(String[] args) throws Exception {
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ProcessBuilder pb = ProcessTools.createNativeTestProcessBuilder("FDLeakTester");
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pb.inheritIO();
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Process p = pb.start();
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p.waitFor();
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if (p.exitValue() != 0) {
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throw new RuntimeException("Failed");
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}
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}
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}
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