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