#35894 [Fbk->Opn]: php-imap doesn't trap USR2 when mailbox is locked

ID: 35894 User updated by: jik at kamens dot brookline dot ma dot us Reported By: jik at kamens dot brookline dot ma dot us -Status: Feedback +Status: Open Bug Type: IMAP related Operating System: Linux PHP Version: 5.1.1 New Comment: There's a patch which makes this problem go away at http://stuff.mit.edu/~jik/php-5.1.1-imap-usr2.patch.txt. However, rather than using the #if statement I used to figure out whether to enable the relevant code, you may want to insert a check for the function arm_signal in the c-client library in the configure script, define a cpp symbol if the function exists, and use my code if that cpp symbol is defined. Previous Comments: ------------------------------------------------------------------------ [2006-01-04 19:59:55] tony2001@php.net >Did you run the script twice at the same time as I said in my report? Yes. And the mailbox is not empty. ------------------------------------------------------------------------ [2006-01-04 19:53:02] jik at kamens dot brookline dot ma dot us Also, let me remind you that it won't happen if the mailbox file is empty; it needs to have messages in it, or c-client won't lock it. ------------------------------------------------------------------------ [2006-01-04 19:52:09] jik at kamens dot brookline dot ma dot us Did you run the script twice at the same time as I said in my report? That's the only way you're going to be able to reproduce it, since it requires contention from two different processes. ------------------------------------------------------------------------ [2006-01-04 19:51:27] jik at kamens dot brookline dot ma dot us $ ls -l /var/mail/jik; php /tmp/imap_open.php /var/mail/jik & php /tmp/imap_open.php /var/mail/jik -rw------- 1 jik mail 871 Jan 4 13:44 /var/mail/jik [1] 31702 starting to open mailbox starting to open mailbox successfully opened mailbox PHP Notice: Unknown: Trying to get mailbox lock from process 31702 (errflg=1) in Unknown on line 0 [1]+ User defined signal 2 php /tmp/imap_open.php /var/mail/jik $ New version of the script: <?php print "starting to open mailbox\n"; imap_open($argv[1], "", ""); print "successfully opened mailbox\n"; ?> I don't know why you can't reproduce it; it reproduces easily for me, as shown above. The c-client documentation and source code make it clear that this is going on, so unless you can confirm that PHP is installing a USR2 handle when locking mailboxes, I'm pretty sure it's a problem. ------------------------------------------------------------------------ [2006-01-04 19:33:42] tony2001@php.net Can't reproduce. I don't see any error messages and the script works fine. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/35894 -- Edit this bug report at http://bugs.php.net/?id=35894&edit=1