1 /*
   2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /* @test
  25  * @bug 8020669
  26  * @summary j.n.f.Files.readAllBytes() should read from special files (like
  27  *  /proc/self/stat under Linux), even though OS reports them to be zero sized
  28  */
  29 
  30 import java.io.IOException;
  31 import java.nio.file.*;
  32 
  33 public class ReadAllBytesProc {
  34 
  35     private static final String specFile = "/proc/self/stat";
  36 
  37     public static void main(String[] args) {
  38         try {
  39             Path path = Paths.get(specFile);
  40             byte[] data = Files.readAllBytes(path);
  41             if (data.length == 0)
  42                 throw new RuntimeException("Failed to read content of '" + specFile + "'");
  43         } catch (IOException ex) {
  44             System.err.println("Cannot perform test on this platform");
  45         }
  46     }
  47 }