FULL PRODUCT VERSION :
Java(TM) SE Runtime Environment (build 1.6.0_29-b11)
Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Linux 2.6.18-128.el5 #1 SMP Wed Dec 17 11:41:38 EST 2008 x86_64 x86_64 x86_64 GNU/Linux


A DESCRIPTION OF THE PROBLEM :
In previous versions of Java it was possible to read files with a path full path length greater than 2048, 1.6 u 24 for example.
 However in update 1.6 update 29 if you attempt to read a file using a java.io.FileInputStream with a path greater than 2048 characters a java.io.FileNotFoundException is thrown.
  Interestingly a new File().exists() returns true, its just when you attempt to open the file does the error occur. I have also attempted to open the file using a java.io.RandomAccessFile and the FileNotFoundException is still thrown.


REGRESSION. Last worked in version 6u29

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a file and directory structure with a length greater than 2048 characters. For example.
/pe_unix_1/itest_templates/DeepDirectoriesAndLongNames/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/1234567890/1234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/test.file

Then attempt to open and read the file using a java.io.FileInputStream.




EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I would expect that the file would be read successfully.
ACTUAL -
A java.io.FileNotFoundException is thrown and the file is not read.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.io.FileNotFoundException: /pe_unix_1/itest_templates/DeepDirectoriesAndLongNames/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/IAmAVeryLongDirectoryNameHeldWithinAVeryDeepPathOfDirectoriesForTesting1/1234567890/1234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/123456789012345678901234567890123456789012345678901234567890/test.file (File name too long)
        at java.io.FileInputStream.open(Native Method)
        at java.io.FileInputStream.<init>(FileInputStream.java:120)
        at FilePathLengthTest.main(FilePathLengthTest.java:21)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;



/**
 * Simple class used to test the maximum allowed path length for a file.
 * It seems that between java 1.6 u 24 and java 1.6 u 29 the max path length was lowered to 2048 when opening a FileInputStream.
 *
 */
public class FilePathLengthTest {

public static void main(String args[]) {
String path = args[0];
File file = new File(path);
if(file.exists()) {
try {
BufferedReader fs =new BufferedReader( new InputStreamReader(new FileInputStream(file)));
String line= "";
while((line = fs.readLine())!=null) {
System.out.println("reading line : "+line);
}
fs.close();

} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
if(file.isFile()) {

}
} else {
System.out.println(path + " does not exist");
}

}

}
---------- END SOURCE ----------