63 lines
2.4 KiB
Java
63 lines
2.4 KiB
Java
/*
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* Copyright (c) 2014, 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 8054029
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* @summary Block devices should not report size=0 on Linux
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*/
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import java.io.RandomAccessFile;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.nio.channels.FileChannel;
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import java.nio.file.AccessDeniedException;
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import java.nio.file.NoSuchFileException;
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import static java.nio.file.StandardOpenOption.*;
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public class BlockDeviceSize {
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private static final String BLK_FNAME = "/dev/sda1";
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private static final Path BLK_PATH = Paths.get(BLK_FNAME);
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public static void main(String[] args) throws Throwable {
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try (FileChannel ch = FileChannel.open(BLK_PATH, READ);
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RandomAccessFile file = new RandomAccessFile(BLK_FNAME, "r")) {
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long size1 = ch.size();
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long size2 = file.length();
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if (size1 != size2) {
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throw new RuntimeException("size differs when retrieved" +
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" in different ways: " + size1 + " != " + size2);
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}
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System.out.println("OK");
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} catch (NoSuchFileException nsfe) {
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System.err.println("File " + BLK_FNAME + " not found." +
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" Skipping test");
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} catch (AccessDeniedException ade) {
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System.err.println("Access to " + BLK_FNAME + " is denied." +
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" Run test as root.");
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}
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}
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}
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