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Refactor working with a locked file

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This commit is contained in:
Peter Knut
2024-10-07 22:20:32 +02:00
committed by Jakub Vrana
parent d8a9a3db8d
commit 43e3fe375d
1 changed files with 8 additions and 8 deletions
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16
adminer/include/functions.inc.php
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@@ -799,15 +799,15 @@ function get_temp_dir() {
* @return resource or null for error
*/
function file_open_lock($filename) {
$fp = @fopen($filename, "r+"); // @ - may not exist
if (!$fp) { // c+ is available since PHP 5.2.6
$fp = @fopen($filename, "w"); // @ - may not be writable
if (!$fp) {
return;
}
chmod($filename, 0660);
$fp = @fopen($filename, "c+"); // @ - may not be writable
if (!$fp) {
return;
}
chmod($filename, 0660);
if (!flock($fp, LOCK_EX)) {
fclose($fp);
return;
}
flock($fp, LOCK_EX);
return $fp;
}