Hi Folks, I work on an application that uses POSIX message queues pretty intensively. It works on Fedora Core 2 but not Fedora Core 3. The problem is that Linux 2.6 adds some new limits that the pam_limits module doesn't yet (as of version 0.77) know how to set. I added a patch to the Red Hat bug report (see https://bugzilla.redhat.com/beta/show_bug.cgi?id=131190 ) but the Red Hat folks pointed out that you should vet it since it changes the config file format. Basically it adds two new "items" to limits.conf: "sigpending" which corresponds to RLIMIT_SIGPENDING, and "mqueue" which corresponds to RLIMIT_MSGQUEUE. Here's the patch: diff -ur Linux-PAM-0.77-rh/modules/pam_limits/limits.skel Linux-PAM-0.77/modules/pam_limits/limits.skel --- Linux-PAM-0.77-rh/modules/pam_limits/limits.skel 2004-12-21 17:24:59.683477077 -0500 +++ Linux-PAM-0.77/modules/pam_limits/limits.skel 2004-12-21 17:28:00.573877370 -0500 @@ -30,6 +30,8 @@ # - maxlogins - max number of logins for this user # - priority - the priority to run user process with # - locks - max number of file locks the user can hold +# - sigpending - max number of pending signals +# - mqueue - max memory used by POSIX message queues (bytes) # #<domain> <type> <item> <value> # Only in Linux-PAM-0.77/modules/pam_limits: limits.skel~ diff -ur Linux-PAM-0.77-rh/modules/pam_limits/pam_limits.c Linux-PAM-0.77/modules/pam_limits/pam_limits.c --- Linux-PAM-0.77-rh/modules/pam_limits/pam_limits.c 2004-12-21 17:24:59.682477182 -0500 +++ Linux-PAM-0.77/modules/pam_limits/pam_limits.c 2004-12-21 17:25:20.188319968 -0500 @@ -289,6 +289,10 @@ limit_item = RLIMIT_MEMLOCK; else if (strcmp(lim_item, "as") == 0) limit_item = RLIMIT_AS; + else if (strcmp(lim_item, "sigpending") == 0) + limit_item = RLIMIT_SIGPENDING; + else if (strcmp(lim_item, "mqueue") == 0) + limit_item = RLIMIT_MSGQUEUE; #ifdef RLIMIT_LOCKS else if (strcmp(lim_item, "locks") == 0) limit_item = RLIMIT_LOCKS; Please let me know what you think, especially if I need to wrap the new parameters in ifdef's. Cheers, Toby _______________________________________________ Pam-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/pam-list
