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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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63
test/jdk/java/nio/channels/FileChannel/Force.java Normal file
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/*
* Copyright (c) 2001, 2003, 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 4434115 4802789
* @summary Check for regressions in FileChannel.force
*/
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
public class Force {
public static void main(String[] args) throws Exception {
writeAfterForce();
forceReadableOnly();
}
// 4434115: FileChannel.write() fails when preceded by force() operation
private static void writeAfterForce() throws Exception {
byte[] srcData = new byte[20];
File blah = File.createTempFile("blah", null);
blah.deleteOnExit();
FileOutputStream fis = new FileOutputStream(blah);
FileChannel fc = fis.getChannel();
fc.write(ByteBuffer.wrap(srcData));
fc.force(false);
fc.write(ByteBuffer.wrap(srcData));
fc.close();
}
// 4802789: FileChannel.force(true) throws IOException (windows)
private static void forceReadableOnly() throws Exception {
File f = File.createTempFile("blah", null);
f.deleteOnExit();
FileInputStream fis = new FileInputStream(f);
FileChannel fc = fis.getChannel();
fc.force(true);
fc.close();
fis.close();
}
}