$fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
+ $stat_h = fstat($fp);
+ $stat_f = stat(LOCK_DIRECTORY . "/$filename");
+
+ if ($stat_h["ino"] != $stat_f["ino"] || $stat_h["dev"] != $stat_f["dev"]) {
+ return false;
+ }
+
if (function_exists('posix_getpid')) {
fwrite($fp, posix_getpid() . "\n");
}