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 }