MaxPathLength.java revision 6073:cea72c2bf071
1/* 2 * Copyright (c) 2002, 2012, 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 4759207 4403166 4165006 4403166 6182812 6274272 26 @summary Test to see if win32 path length can be greater than 260 27 */ 28 29import java.io.*; 30 31public class MaxPathLength { 32 private static String sep = File.separator; 33 private static String pathComponent = sep + 34 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"; 35 private static String fileName = 36 "areallylongfilenamethatsforsur"; 37 private static boolean isWindows = false; 38 39 public static void main(String[] args) throws Exception { 40 String osName = System.getProperty("os.name"); 41 if (osName.startsWith("Windows")) { 42 isWindows = true; 43 } 44 45 for (int i = 4; i < 7; i++) { 46 String name = fileName; 47 while (name.length() < 256) { 48 testLongPath (i, name, false); 49 testLongPath (i, name, true); 50 name += "A"; 51 } 52 } 53 54 // test long paths on windows 55 if (isWindows) { 56 String name = fileName; 57 while (name.length() < 256) { 58 testLongPath (20, name, false); 59 testLongPath (20, name, true); 60 name += "A"; 61 } 62 } 63 } 64 65 static void testLongPath(int max, String fn, 66 boolean tryAbsolute) throws Exception { 67 String[] created = new String[max]; 68 String pathString = "."; 69 for (int i = 0; i < max -1; i++) { 70 pathString = pathString + pathComponent; 71 created[max - 1 -i] = pathString; 72 73 } 74 File dirFile = new File(pathString); 75 File f = new File(pathString + sep + fn); 76 77 String tPath = f.getPath(); 78 if (tryAbsolute) { 79 tPath = f.getCanonicalPath(); 80 } 81 created[0] = tPath; 82 83 //for getCanonicalPath testing on win32 84 File fu = new File(pathString + sep + fn.toUpperCase()); 85 86 if (dirFile.exists()) { 87 System.err.println("Warning: Test directory structure exists already!"); 88 return; 89 } 90 boolean couldMakeTestDirectory = dirFile.mkdirs(); 91 if (!couldMakeTestDirectory) { 92 throw new RuntimeException ("Could not create test directory structure"); 93 } 94 try { 95 if (tryAbsolute) 96 dirFile = new File(dirFile.getCanonicalPath()); 97 if (!dirFile.isDirectory()) 98 throw new RuntimeException ("File.isDirectory() failed"); 99 f = new File(tPath); 100 if (!f.createNewFile()) { 101 throw new RuntimeException ("File.createNewFile() failed"); 102 } 103 if (!f.exists()) 104 throw new RuntimeException ("File.exists() failed"); 105 if (!f.isFile()) 106 throw new RuntimeException ("File.isFile() failed"); 107 if (!f.canRead()) 108 throw new RuntimeException ("File.canRead() failed"); 109 if (!f.canWrite()) 110 throw new RuntimeException ("File.canWrite() failed"); 111 if (!f.delete()) 112 throw new RuntimeException ("File.delete() failed"); 113 FileOutputStream fos = new FileOutputStream(f); 114 fos.write(1); 115 fos.close(); 116 if (f.length() != 1) 117 throw new RuntimeException ("File.length() failed"); 118 long time = System.currentTimeMillis(); 119 if (!f.setLastModified(time)) 120 throw new RuntimeException ("File.setLastModified() failed"); 121 if (f.lastModified() == 0) { 122 throw new RuntimeException ("File.lastModified() failed"); 123 } 124 String[] list = dirFile.list(); 125 if (list == null || !fn.equals(list[0])) { 126 throw new RuntimeException ("File.list() failed"); 127 } 128 129 File[] flist = dirFile.listFiles(); 130 if (flist == null || !fn.equals(flist[0].getName())) 131 throw new RuntimeException ("File.listFiles() failed"); 132 133 if (isWindows && 134 !fu.getCanonicalPath().equals(f.getCanonicalPath())) 135 throw new RuntimeException ("getCanonicalPath() failed"); 136 137 char[] cc = tPath.toCharArray(); 138 cc[cc.length-1] = 'B'; 139 File nf = new File(new String(cc)); 140 if (!f.renameTo(nf)) { 141 /*there is a known issue that renameTo fails if 142 (1)the path is a UNC path and 143 (2)the path length is bigger than 1092 144 so don't stop if above are true 145 */ 146 String abPath = f.getAbsolutePath(); 147 if (!abPath.startsWith("\\\\") || 148 abPath.length() < 1093) { 149 throw new RuntimeException ("File.renameTo() failed for lenth=" 150 + abPath.length()); 151 } 152 return; 153 } 154 if (!nf.canRead()) 155 throw new RuntimeException ("Renamed file is not readable"); 156 if (!nf.canWrite()) 157 throw new RuntimeException ("Renamed file is not writable"); 158 if (nf.length() != 1) 159 throw new RuntimeException ("Renamed file's size is not correct"); 160 nf.renameTo(f); 161 /* add a script to test these two if we got a regression later 162 if (!f.setReadOnly()) 163 throw new RuntimeException ("File.setReadOnly() failed"); 164 f.deleteOnExit(); 165 */ 166 } finally { 167 // Clean up 168 for (int i = 0; i < max; i++) { 169 pathString = created[i]; 170 // Only works with completex canonical paths 171 File df = new File(pathString); 172 pathString = df.getCanonicalPath(); 173 df = new File(pathString); 174 if (!df.delete()) 175 System.out.printf("Delete failed->%s\n", pathString); 176 } 177 } 178 } 179} 180