Bug #13320 Updated: shmget() fails if running two copies of php4 simultaniously as different users

ID: 13320 Updated by: yohgaki Reported By: rawb@rawb.org Old Status: Assigned Status: Closed Bug Type: Session related Operating System: Linux/Debian/unstable PHP Version: 4.0.6 Assigned To: yohgaki New Comment: Fixed in CVS. Now you can specify different save_path for each instance. Previous Comments: ------------------------------------------------------------------------ [2002-01-06 22:16:13] yohgaki@php.net I'll work on this one ;) This report is actually a dup of 13268, though. ------------------------------------------------------------------------ [2001-12-19 22:42:19] yohgaki@php.net This is expected. MM module will have problem you've mentioned. This behavior will not be changed at least anytime soon... -- Yasuo Ohgaki ------------------------------------------------------------------------ [2001-09-15 13:05:38] rawb@rawb.org Even with the session handler set to 'files', the mod_mm MINIT function gets called, putting a session_mm.sem in /tmp with permissions set to 600. This stops anyone else from running php (such as from the command line) at the same time. I see three possible fixes (but I don't know if these would work, otherwise I'd send you a patch): 1. Don't initialize the shared memory segment if the session save handler is set to anything but 'mm' 2. If the shared memory system fails, set a flag instead of erroring out, and have the rest of the shared memory system check this flag and let them error out when they try to use the shared memory system 3. (almost a kludge) Have the shared memory system look at either the $TMPDIR environment varible for where it should stick the segment, or have some other environment varible / configuration option that someone can set to put the session_mm.sem in someplace other than /tmp ------------------------------------------------------------------------ Edit this bug report at http://bugs.php.net/?id=13320&edit=1