#20863 [NEW]: md5_file() and exec() freeze

From: mike.duncan@sonopress.com Operating system: SuSE 7.3 Pro PHP version: 4CVS-2002-12-06 (stable) PHP Bug Type: Filesystem function related Bug description: md5_file() and exec() freeze Here is my src: -------------------- $files = array(); $dirs = array(); function getMD5OfFile($f) { return md5_file($f); //return exec("md5sum ".$f." | awk '{print $1}'"); } function getFiles($d) { global $files, $dirs; clearstatcache(); if($dir = @opendir($d)) { while(($file = @readdir($dir)) !== false) { if(($file != ".") && ($file != "..")) { if(is_dir($d."/".$file)) $dirs[] = $d."/".$file; elseif(is_file($d."/".$file) && (substr($file,0,1) != ".")) $files[] = $d."/".$file; } } } } /** Get files for directories **/ getFiles("/home/webdev"); while(($dir = array_shift($dirs)) !== null) { getFiles($dir); } /** Ouptut findings **/ while(($file = array_shift($files)) !== null) { echo $file.": ". getMD5FromFile($file) ."\n"; } ------------------ I first tried this with v4.2.1. What I am trying to do is get the MD5 for every file within the filesystem. Unfortunately this code freezes after about 20 or so files (md5_file() or exec() returns ok until then). If I uncomment the exec() return and comment the md5_file() return, the script hangs at exactly the same spot. If comment both out and run the script without md5'ing any files, I get a listing of all files (no problem). I have also tried replacing the md5_file() code with one that was listed here http://www.php.net/manual/en/function.md5-file.php that will read the file into a variable and do a md5() on that var. Unfortunately I got a FATAL: emalloc() error using that method. Finally, I tried getting the upgrading to v4.3.0-dev (latest snapshot from snaps) and got the same results. I cannot figure out why this hangs and does not bomb out. I think it has something to do with maybe a cache of some sort or the memory buffers are filling up. Maybe even something to with how I am traversing the array of directories? But then, why would it work without the md5 cals? I do not know, but I thought I would post it here and see what you guys think. TIA. -- Edit bug report at http://bugs.php.net/?id=20863&edit=1 -- Try a CVS snapshot: http://bugs.php.net/fix.php?id=20863&r=trysnapshot Fixed in CVS: http://bugs.php.net/fix.php?id=20863&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=20863&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=20863&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=20863&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=20863&r=support Expected behavior: http://bugs.php.net/fix.php?id=20863&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=20863&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=20863&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=20863&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=20863&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=20863&r=dst IIS Stability: http://bugs.php.net/fix.php?id=20863&r=isapi