diff options
author | igerasim <none@none> | 2014-11-07 01:51:06 +0300 |
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committer | igerasim <none@none> | 2014-11-07 01:51:06 +0300 |
commit | 1fd3e516e7bbab4bdcdfa20352bdf203bd369249 (patch) | |
tree | 31cd5c1382c56ea7cb2b7faf81af4b365def1439 /test/java/nio/channels | |
parent | 88ae82db5ffcc1663b0bc8d95f7ad4c99c94e593 (diff) |
8054029: (fc) FileChannel.size() returns 0 for block devices on Linux
Reviewed-by: alanb
Diffstat (limited to 'test/java/nio/channels')
-rw-r--r-- | test/java/nio/channels/FileChannel/BlockDeviceSize.java | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/test/java/nio/channels/FileChannel/BlockDeviceSize.java b/test/java/nio/channels/FileChannel/BlockDeviceSize.java new file mode 100644 index 000000000..aafe4192d --- /dev/null +++ b/test/java/nio/channels/FileChannel/BlockDeviceSize.java @@ -0,0 +1,62 @@ +/* + * 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."); + } + } +} |