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Bug 165193

Summary: [RHEL-4] gnome-pty-helper doesn't clean up gnome-terminals' utmp/wtmp entries when killed
Product: Red Hat Enterprise Linux 4 Reporter: Bastien Nocera <bnocera>
Component: vteAssignee: Behdad Esfahbod <behdad>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: tao
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHBA-2007-0219 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-05-01 17:14:02 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
vte-0.11.11-pty-helper-utmp-update.patch none

Description Bastien Nocera 2005-08-05 08:27:04 UTC 
+++ This bug was initially created as a clone of Bug #159363 +++

Description of problem:
The utmp entries of gnome-terminals run under vnc don't get cleaned up if the
vnc session is killed via 'vncserver -kill <display>'. This is because vncserver
doesn't just kill the gnome-terminals as a user would, but rather kills all
child processes, which includes gnome-pty-helper. gnome-pty-helper just dies,
leaving the stale utmp/wtmp entries to potentially confuse subsequent users of
'/bin/who -u', which isn't supposed to show entries for dead processes.

Version-Release number of selected component (if applicable):
vte-0.11.10-11

How reproducible:
Always

Steps to Reproduce:
(This occurs naturally when a vncserver running gnome-terminals is killed using
'vncserver -kill <display number>' but the below process is much simpler)
1. start a gnome-terminal (note the tty)
2. kill both the gnome-terminal and gnome-pty-helper with SIGHUP
3. check 'who -u' output
  
Actual results:
The entry for the gnome-terminal is still there although the terminal is gone

Expected results:
No 'who -u' output for dead gnome-terminal

Additional info:
I've seen the gnome-terminal get SIGPIPE and as a result send SIGTERM to
gnome-pty-helper and I've also seen gnome-pty-helper get SIGHUP from (I guess)
vncserver.

Patch from Dave Lehman <dlehman> at:
https://bugzilla.redhat.com/bugzilla/attachment.cgi?id=115067
Comment 1 Bastien Nocera 2005-08-05 08:28:04 UTC 
Patch was committed to HEAD upstream.
Comment 9 Bastien Nocera 2006-04-03 10:32:46 UTC 
The original patch was broken (ie. doing nasty things in the signal handler).
This upstream patch (on top of the old one) should fix it:
http://cvs.gnome.org/viewcvs/vte/gnome-pty-helper/gnome-pty-helper.c?r1=1.9&r2=1.10

Ray, let me know if you need the final patch backported.
Comment 10 Behdad Esfahbod 2006-07-27 21:36:06 UTC 
Bastien, can you attach a final patch?
Comment 12 RHEL Program Management 2006-08-18 17:28:34 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 13 Bastien Nocera 2006-12-19 11:24:21 UTC 
Created attachment 143990 [details]
vte-0.11.11-pty-helper-utmp-update.patch

Untested patch.
Comment 14 Bastien Nocera 2006-12-19 11:30:30 UTC 
I also included the patch from:
http://bugzilla.gnome.org/show_bug.cgi?id=387482

Patch compiles fine.
Comment 18 Behdad Esfahbod 2006-12-20 18:53:49 UTC 
Built.
Comment 24 Red Hat Bugzilla 2007-05-01 17:14:02 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2007-0219.html