1 /* 2 * Copyright (c) 2015, 2016, 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 8139133 26 * @summary Verify ability to set time attributes of socket files with no device 27 * @requires os.family == "linux" 28 */ 29 30 import java.io.File; 31 import java.io.InputStream; 32 import java.io.IOException; 33 import java.nio.file.FileSystem; 34 import java.nio.file.FileSystems; 35 import java.nio.file.Files; 36 import java.nio.file.Path; 37 import java.nio.file.Paths; 38 import java.nio.file.StandardWatchEventKinds; 39 import java.nio.file.WatchKey; 40 import java.nio.file.WatchService; 41 import java.nio.file.attribute.BasicFileAttributeView; 42 import java.nio.file.attribute.BasicFileAttributes; 43 import java.nio.file.attribute.FileTime; 44 45 public class UnixSocketFile { 46 private static final String TEST_SUB_DIR = "UnixSocketFile"; 47 private static final String SOCKET_FILE_NAME = "mysocket"; 48 private static final String CMD_BASE = "nc -lU"; 49 50 public static void main(String[] args) 51 throws InterruptedException, IOException { 52 53 // Use 'which' to verify that 'nc' is available and skip the test 54 // if it is not. 55 Process proc = Runtime.getRuntime().exec("which nc"); 56 InputStream stdout = proc.getInputStream(); 57 int b = stdout.read(); 58 proc.destroy(); 59 if (b == -1) { 60 System.err.println("Netcat command unavailable; skipping test."); 61 return; 62 } 63 64 // Create a new sub-directory of the nominal test directory in which 65 // 'nc' will create the socket file. 66 String testSubDir = System.getProperty("test.dir", ".") 67 + File.separator + TEST_SUB_DIR; 68 Path socketTestDir = Paths.get(testSubDir); 69 Files.createDirectory(socketTestDir); 70 71 // Set the path of the socket file. 72 String socketFilePath = testSubDir + File.separator 73 + SOCKET_FILE_NAME; 74 75 // Create a process which executes the nc (netcat) utility to create 76 // a socket file at the indicated location. 77 FileSystem fs = FileSystems.getDefault(); 78 try (WatchService ws = fs.newWatchService()) { 79 // Watch the test sub-directory to receive notification when an 80 // entry, i.e., the socket file, is added to the sub-directory. 81 WatchKey wk = socketTestDir.register(ws, 82 StandardWatchEventKinds.ENTRY_CREATE); 83 84 // Execute the 'nc' command. 85 proc = Runtime.getRuntime().exec(CMD_BASE + " " + socketFilePath); 86 87 // Wait until the socket file is created. 88 WatchKey key = ws.take(); 89 if (key != wk) { 90 throw new RuntimeException("Unknown entry created - expected: " 91 + wk.watchable() + ", actual: " + key.watchable()); 92 } 93 wk.cancel(); 94 } 95 96 // Verify that the socket file in fact exists. 97 Path socketPath = fs.getPath(socketFilePath); 98 if (!Files.exists(socketPath)) { 99 throw new RuntimeException("Socket file " + socketFilePath 100 + " was not created by \"nc\" command."); 101 } 102 103 // Retrieve the most recent access and modification times of the 104 // socket file; print the values. 105 BasicFileAttributeView attributeView = Files.getFileAttributeView( 106 socketPath, BasicFileAttributeView.class); 107 BasicFileAttributes oldAttributes = attributeView.readAttributes(); 108 FileTime oldAccessTime = oldAttributes.lastAccessTime(); 109 FileTime oldModifiedTime = oldAttributes.lastModifiedTime(); 110 System.out.println("Old times: " + oldAccessTime 111 + " " + oldModifiedTime); 112 113 // Calculate the time to which the access and modification times of the 114 // socket file will be changed. 115 FileTime newFileTime = 116 FileTime.fromMillis(oldAccessTime.toMillis() + 1066); 117 118 try { 119 // Set the access and modification times of the socket file. 120 attributeView.setTimes(newFileTime, newFileTime, null); 121 122 // Retrieve the updated access and modification times of the 123 // socket file; print the values. 124 FileTime newAccessTime = null; 125 FileTime newModifiedTime = null; 126 BasicFileAttributes newAttributes = attributeView.readAttributes(); 127 newAccessTime = newAttributes.lastAccessTime(); 128 newModifiedTime = newAttributes.lastModifiedTime(); 129 System.out.println("New times: " + newAccessTime + " " 130 + newModifiedTime); 131 132 // Verify that the updated times have the expected values. 133 if ((newAccessTime != null && !newAccessTime.equals(newFileTime)) 134 || (newModifiedTime != null 135 && !newModifiedTime.equals(newFileTime))) { 136 throw new RuntimeException("Failed to set correct times."); 137 } 138 } finally { 139 // Destry the process running netcat and delete the socket file. 140 proc.destroy(); 141 Files.delete(socketPath); 142 } 143 } 144 }