> -----Original Message----- > From: [email protected] [mailto:rsyslog- > [email protected]] On Behalf Of Rainer Gerhards > Sent: Thursday, January 10, 2013 4:51 PM > To: rsyslog-users > Subject: Re: [rsyslog] Privilege drop makes stopping it (via Ubuntu > upstart) to hang > > > -----Original Message----- > > From: [email protected] [mailto:rsyslog- > > [email protected]] On Behalf Of Radu Gheorghe > > Sent: Thursday, January 10, 2013 4:08 PM > > To: rsyslog-users > > Subject: Re: [rsyslog] Privilege drop makes stopping it (via Ubuntu > > upstart) to hang > > > > Hello, > > > > I'm back :) Here's what I got (correct me if I'm wrong): > > > > Without dropped privileges, rsyslogd forks and exits. It writes the > PID > > of > > the forked process in the pid file, and everyone is happy. > > > > With dropped privileges, rsyslogd forks but doesn't exit. I guess > > that's > > because the parent runs as root and needs to remain there. The pid > file > > still contains the PID of the child process, but it's no good killing > > it, > > since the parent is still alive. > > > > While I don't know how/if it can be implemented, what makes sense to > me > > is > > the following solution: > > - even with dropped privileges, the main rsyslogd instance should > exit > > after the initialization is finished > > > Mmmhhhh... I am puzzled by this finding. As far as termination of > processes is concerned, there is no intended difference between priv > drop and not. I will check the code if I can see anything. If that's > due to some OS restriction, I'd be glad if someone could let me know > what's going on. >
I think I found the culprit: signaling the parent probably does no longer work when privs are dropped: http://git.adiscon.com/?p=rsyslog.git;a=blob;f=tools/syslogd.c;h=bd5b52cae06eb28cd80fb0afc503276b10c342f2;hb=HEAD#l2003 Now I need to think how to handle that... Rainer _______________________________________________ rsyslog mailing list http://lists.adiscon.net/mailman/listinfo/rsyslog http://www.rsyslog.com/professional-services/ What's up with rsyslog? Follow https://twitter.com/rgerhards NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad of sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you DON'T LIKE THAT.
