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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* questions.
*/
/* @test
@bug 4759207 4403166 4165006 4403166 6182812 6274272 7160013
@summary Test to see if win32 path length can be greater than 260
*/
import java.io.*;
import java.nio.file.Files;
public class MaxPathLength {
private static String sep = File.separator;
private static String pathComponent = sep +
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
private static String fileName =
"areallylongfilenamethatsforsur";
private static boolean isWindows = false;
private final static int MAX_LENGTH = 256;
private static int counter = 0;
public static void main(String[] args) throws Exception {
String osName = System.getProperty("os.name");
if (osName.startsWith("Windows")) {
isWindows = true;
}
for (int i = 4; i < 7; i++) {
String name = fileName;
while (name.length() < MAX_LENGTH) {
testLongPath (i, name, false);
testLongPath (i, name, true);
name = getNextName(name);
}
}
// test long paths on windows
// And these long pathes cannot be handled on Solaris and Mac platforms
if (isWindows) {
String name = fileName;
while (name.length() < MAX_LENGTH) {
testLongPath (20, name, false);
testLongPath (20, name, true);
name = getNextName(name);
}
}
}
private static String getNextName(String fName) {
return (fName.length() < MAX_LENGTH/2) ? fName + fName
: fName + "A";
}
static void testLongPath(int max, String fn,
boolean tryAbsolute) throws Exception {
String[] created = new String[max];
String pathString = ".";
for (int i = 0; i < max -1; i++) {
pathString = pathString + pathComponent + (counter++);
created[max - 1 -i] = pathString;
}
File dirFile = new File(pathString);
File f = new File(pathString + sep + fn);
String tPath = f.getPath();
if (tryAbsolute) {
tPath = f.getCanonicalPath();
}
created[0] = tPath;
//for getCanonicalPath testing on win32
File fu = new File(pathString + sep + fn.toUpperCase());
if (dirFile.exists()) {
System.err.println("Warning: Test directory structure exists already!");
return;
}
try {
Files.createDirectories(dirFile.toPath());
if (tryAbsolute)
dirFile = new File(dirFile.getCanonicalPath());
if (!dirFile.isDirectory())
throw new RuntimeException ("File.isDirectory() failed");
f = new File(tPath);
if (!f.createNewFile()) {
throw new RuntimeException ("File.createNewFile() failed");
}
if (!f.exists())
throw new RuntimeException ("File.exists() failed");
if (!f.isFile())
throw new RuntimeException ("File.isFile() failed");
if (!f.canRead())
throw new RuntimeException ("File.canRead() failed");
if (!f.canWrite())
throw new RuntimeException ("File.canWrite() failed");
if (!f.delete())
throw new RuntimeException ("File.delete() failed");
FileOutputStream fos = new FileOutputStream(f);
fos.write(1);
fos.close();
if (f.length() != 1)
throw new RuntimeException ("File.length() failed");
long time = System.currentTimeMillis();
if (!f.setLastModified(time))
throw new RuntimeException ("File.setLastModified() failed");
if (f.lastModified() == 0) {
throw new RuntimeException ("File.lastModified() failed");
}
String[] list = dirFile.list();
if (list == null || !fn.equals(list[0])) {
throw new RuntimeException ("File.list() failed");
}
File[] flist = dirFile.listFiles();
if (flist == null || !fn.equals(flist[0].getName()))
throw new RuntimeException ("File.listFiles() failed");
if (isWindows &&
!fu.getCanonicalPath().equals(f.getCanonicalPath()))
throw new RuntimeException ("getCanonicalPath() failed");
char[] cc = tPath.toCharArray();
cc[cc.length-1] = 'B';
File nf = new File(new String(cc));
if (!f.renameTo(nf)) {
/*there is a known issue that renameTo fails if
(1)the path is a UNC path and
(2)the path length is bigger than 1092
so don't stop if above are true
*/
String abPath = f.getAbsolutePath();
if (!abPath.startsWith("\\\\") ||
abPath.length() < 1093) {
throw new RuntimeException ("File.renameTo() failed for lenth="
+ abPath.length());
}
} else {
if (!nf.canRead())
throw new RuntimeException ("Renamed file is not readable");
if (!nf.canWrite())
throw new RuntimeException ("Renamed file is not writable");
if (nf.length() != 1)
throw new RuntimeException ("Renamed file's size is not correct");
if (!nf.renameTo(f)) {
created[0] = nf.getPath();
}
/* add a script to test these two if we got a regression later
if (!f.setReadOnly())
throw new RuntimeException ("File.setReadOnly() failed");
f.deleteOnExit();
*/
}
} finally {
// Clean up
for (int i = 0; i < max; i++) {
Files.deleteIfExists((new File(created[i])).toPath());
}
}
}
}