98 lines
3.9 KiB
Java
98 lines
3.9 KiB
Java
/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 8181493
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* @summary Verify that nanosecond precision is maintained for file timestamps
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* @requires (os.family == "linux") | (os.family == "mac") | (os.family == "solaris")
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* @modules java.base/sun.nio.fs:+open
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*/
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import java.io.IOException;
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import java.lang.reflect.Method;
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import java.nio.file.Files;
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import java.nio.file.FileStore;
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import java.nio.file.Path;
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import java.nio.file.attribute.BasicFileAttributes;
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import java.nio.file.attribute.BasicFileAttributeView;
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import java.nio.file.attribute.FileTime;
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import java.util.Set;
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import java.util.concurrent.TimeUnit;
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public class SetTimesNanos {
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public static void main(String[] args) throws Exception {
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// Check whether futimens() system call is supported
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Class unixNativeDispatcherClass = Class.forName("sun.nio.fs.UnixNativeDispatcher");
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Method futimensSupported = unixNativeDispatcherClass.getDeclaredMethod("futimensSupported");
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futimensSupported.setAccessible(true);
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if (!(boolean)futimensSupported.invoke(null)) {
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System.err.println("futimens() system call not supported; skipping test");
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return;
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}
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Path dirPath = Path.of("test");
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Path dir = Files.createDirectory(dirPath);
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FileStore store = Files.getFileStore(dir);
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System.out.format("FileStore: \"%s\" on %s (%s)%n",
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dir, store.name(), store.type());
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Set<String> testedTypes = Set.of("apfs", "ext4", "xfs", "zfs");
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if (!testedTypes.contains(store.type())) {
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System.err.format("%s not in %s; skipping test", store.type(), testedTypes);
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return;
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}
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testNanos(dir);
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Path file = Files.createFile(dir.resolve("test.dat"));
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testNanos(file);
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}
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private static void testNanos(Path path) throws IOException {
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// Set modification and access times
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// Time stamp = "2017-01-01 01:01:01.123456789";
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long timeNanos = 1_483_261_261L*1_000_000_000L + 123_456_789L;
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FileTime pathTime = FileTime.from(timeNanos, TimeUnit.NANOSECONDS);
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BasicFileAttributeView view =
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Files.getFileAttributeView(path, BasicFileAttributeView.class);
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view.setTimes(pathTime, pathTime, null);
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// Read attributes
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BasicFileAttributes attrs =
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Files.readAttributes(path, BasicFileAttributes.class);
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// Check timestamps
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String[] timeNames = new String[] {"modification", "access"};
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FileTime[] times = new FileTime[] {attrs.lastModifiedTime(),
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attrs.lastAccessTime()};
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for (int i = 0; i < timeNames.length; i++) {
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long nanos = times[i].to(TimeUnit.NANOSECONDS);
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if (nanos != timeNanos) {
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throw new RuntimeException("Expected " + timeNames[i] +
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" timestamp to be '" + timeNanos + "', but was '" +
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nanos + "'");
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}
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}
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}
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}
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