1 /*
   2  * Copyright (c) 1998, 2008, 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 4091757 6652379
  26    @summary Basic test for setLastModified method
  27  */
  28 
  29 import java.io.*;
  30 import java.nio.ByteBuffer;
  31 import java.nio.channels.FileChannel;
  32 
  33 
  34 public class SetLastModified {
  35 
  36     private static void ck(File f, long nt, long rt) throws Exception {
  37         if (rt == nt) return;
  38         if ((rt / 10 == nt / 10)
  39             || (rt / 100 == nt / 100)
  40             || (rt / 1000 == nt / 1000)
  41             || (rt / 10000 == (nt / 10000))) {
  42             System.err.println(f + ": Time set to " + nt
  43                                + ", rounded down by filesystem to " + rt);
  44             return;
  45         }
  46         if ((rt / 10 == (nt + 5) / 10)
  47             || (rt / 100 == (nt + 50) / 100)
  48             || (rt / 1000 == (nt + 500) / 1000)
  49             || (rt / 10000 == ((nt + 5000) / 10000))) {
  50             System.err.println(f + ": Time set to " + nt
  51                                + ", rounded up by filesystem to " + rt);
  52             return;
  53         }
  54         throw new Exception(f + ": Time set to " + nt
  55                             + ", then read as " + rt);
  56     }
  57 
  58     public static void main(String[] args) throws Exception {
  59         File d = new File(System.getProperty("test.dir", "."));
  60         File d2 = new File(d, "x.SetLastModified.dir");
  61         File f = new File(d2, "x.SetLastModified");
  62         long ot, t;
  63 
  64         /* New time: One week ago */
  65         long nt = System.currentTimeMillis() - 1000 * 60 * 60 * 24 * 7;
  66 
  67         if (f.exists()) f.delete();
  68         if (d2.exists()) d2.delete();
  69         if (!d2.mkdir()) {
  70             throw new Exception("Can't create test directory " + d2);
  71         }
  72 
  73         boolean threw = false;
  74         try {
  75             d2.setLastModified(-nt);
  76         } catch (IllegalArgumentException x) {
  77             threw = true;
  78         }
  79         if (!threw)
  80             throw new Exception("setLastModified succeeded with a negative time");
  81 
  82         ot = d2.lastModified();
  83         if (ot != 0) {
  84             if (d2.setLastModified(nt)) {
  85                 ck(d2, nt, d2.lastModified());
  86                 d2.setLastModified(ot);
  87             } else {
  88                 System.err.println("Warning: setLastModified on directories "
  89                                    + "not supported");
  90             }
  91         }
  92 
  93         if (f.exists()) {
  94             if (!f.delete())
  95                 throw new Exception("Can't delete test file " + f);
  96         }
  97         if (f.setLastModified(nt))
  98             throw new Exception("Succeeded on non-existent file: " + f);
  99 
 100         // set/check last modified on files of size 1, 1GB+1, 2GB+1, ..
 101         // On Windows we only test with a tiny file as that platform doesn't
 102         // support sparse files by default and so the test takes too long.
 103         final long G = 1024L * 1024L * 1024L;
 104         final long MAX_POSITION =
 105             System.getProperty("os.name").startsWith("Windows") ? 0L : 3L*G;
 106         long pos = 0L;
 107         while (pos <= MAX_POSITION) {
 108             try (FileChannel fc = new FileOutputStream(f).getChannel()) {
 109                 fc.position(pos).write(ByteBuffer.wrap("x".getBytes()));
 110             }
 111             ot = f.lastModified();
 112             System.out.format("check with file size: %d\n", f.length());
 113             if (!f.setLastModified(nt))
 114                 throw new Exception("setLastModified failed on file: " + f);
 115             ck(f, nt, f.lastModified());
 116             pos += G;
 117         }
 118 
 119         if (!f.delete()) throw new Exception("Can't delete test file " + f);
 120         if (!d2.delete()) throw new Exception("Can't delete test directory " + d2);
 121     }
 122 
 123 }