1 /*

     2  * Copyright (c) 2019, 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 8181493

    26  * @summary Verify that nanosecond precision is maintained for file timestamps

    27  * @requires (os.family == "linux") | (os.family == "mac") | (os.family == "solaris")

    28  */

    29 

    30 import java.io.IOException;

    31 import java.nio.file.Files;

    32 import java.nio.file.FileStore;

    33 import java.nio.file.Path;

    34 import java.nio.file.attribute.BasicFileAttributes;

    35 import java.nio.file.attribute.BasicFileAttributeView;

    36 import java.nio.file.attribute.FileTime;

    37 import java.time.Instant;

    38 import java.time.ZoneId;

    39 import java.time.ZoneOffset;

    40 import java.time.format.DateTimeFormatter;

    41 import java.util.Arrays;

    42 import java.util.concurrent.TimeUnit;

    43 

    44 public class SetTimesNanos {

    45     public static void main(String[] args) throws IOException,

    46         InterruptedException {

    47 

    48         Path dirPath = Path.of("test");

    49         Path dir = Files.createDirectory(dirPath);

    50         FileStore store = Files.getFileStore(dir);

    51         System.out.format("FileStore: %s on %s (%s)%n", dir, store.name(),

    52             store.type());

    53         if (System.getProperty("os.name").toLowerCase().startsWith("mac") &&

    54             store.type().equalsIgnoreCase("hfs")) {

    55             System.err.println

    56                 ("HFS on macOS does not have nsec timestamps: skipping test");

    57             return;

    58         }

    59         testNanos(dir);

    60 

    61         Path file = Files.createFile(dir.resolve("test.dat"));

    62         testNanos(file);

    63     }

    64 

    65     private static void testNanos(Path path) throws IOException {

    66         // Set modification and access times

    67         // Time stamp = "2017-01-01 01:01:01.123456789";

    68         long timeNanos = 1_483_261_261L*1_000_000_000L + 123_456_789L;

    69         FileTime pathTime = FileTime.from(timeNanos, TimeUnit.NANOSECONDS);

    70         BasicFileAttributeView view =

    71             Files.getFileAttributeView(path, BasicFileAttributeView.class);

    72         view.setTimes(pathTime, pathTime, null);

    73 

    74         // Read attributes

    75         BasicFileAttributes attrs =

    76             Files.readAttributes(path, BasicFileAttributes.class);

    77 

    78         // Check timestamps

    79         String[] timeNames = new String[] {"modification", "access"};

    80         FileTime[] times = new FileTime[] {attrs.lastModifiedTime(),

    81             attrs.lastAccessTime()};

    82         for (int i = 0; i < timeNames.length; i++) {

    83             long nanos = times[i].to(TimeUnit.NANOSECONDS);

    84             if (nanos != timeNanos) {

    85                 throw new RuntimeException("Expected " + timeNames[i] +

    86                     " timestamp to be '" + timeNanos + "', but was '" +

    87                     nanos + "'");

    88             }

    89         }

    90     }

    91 }