Bug #51227 [NEW]: You cannot delete a locked file on Windows

From: Date: Sun, 07 Mar 2010 02:05:18 +0000
Subject: Bug #51227 [NEW]: You cannot delete a locked file on Windows
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-148348@lists.php.net to get a copy of this message
From:             
Operating system: Windows
PHP version:      5.2.13
Package:          Streams related
Bug Type:         Bug
Bug description:You cannot delete a locked file on Windows

Description:
------------
A script creates files. To make sure that no "reader" is accessing the file
while 
the script is changing its content (think of a cache!), you will use
flock() to 
secure the progress.

Tested with PHP Version 5.2.12 (CGI/FastCGI), latest Zend Server release.

Test script:
---------------
<?php
// Set a plain text header
header('Content-Type: text/plain; charset=iso-8859-1');
header('X-Content-Type-Options: nosniff');

$tempFile = tempnam(sys_get_temp_dir(), 'lTest');
if ($tempFile === FALSE)
{
	die('Temp file creation failed!');
}
else
{
	echo 'Our temp file will be: ' . $tempFile . PHP_EOL;
}

$fh = fopen($tempFile, 'w');
if ($fh === FALSE)
{
	die('Cannot get file handler!');
}

$lock = flock($fh, LOCK_EX);
if ($lock === FALSE)
{
	die('Cannot get file lock!');
}

unlink($tempFile);

clearstatcache();
if (file_exists($tempFile) === TRUE)
{
	die('I was unable to delete the file!');
}

$lock = flock($fh, LOCK_UN);
if ($lock === FALSE)
{
	die('Unable to release lock!');
}

fclose($fh);

echo 'Successful! We created a temp file, which we deleted, while the file
was locked!' . PHP_EOL;

Expected result:
----------------
I expect that it will work in Windows, like it is working on Linux.
If this isn't possible, it should be documented.

Actual result:
--------------
It will work fine on Linux, but on Windows it will raise a "SHARING
VIOLATION" 
(trace it in "Process Monitor" from SysInternals).

-- 
Edit bug report at http://bugs.php.net/bug.php?id=51227&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=51227&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=51227&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=51227&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=51227&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51227&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=51227&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=51227&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=51227&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=51227&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=51227&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=51227&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=51227&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=51227&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=51227&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51227&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51227&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=51227&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=51227&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=51227&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=51227&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=51227&r=mysqlcfg



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