[tor-bugs] #7813 [arm]: arm doesn't consistently list connections on OpenBSD 5.1

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#7813: arm doesn't consistently list connections on OpenBSD 5.1
--------------------------+-------------------------------------------------
 Reporter:  mischief      |          Owner:  atagar  
     Type:  defect        |         Status:  assigned
 Priority:  normal        |      Milestone:          
Component:  arm           |        Version:          
 Keywords:  OpenBSD, arm  |         Parent:          
   Points:                |   Actualpoints:          
--------------------------+-------------------------------------------------

Comment(by fk):

 Replying to [ticket:7813 mischief]:

 > going with the theme of calling external programs for information, i
 think an appropriate solution is to use the fstat(1) program instead of
 lsof(1), which is available in the base distribution of OpenBSD, FreeBSD,
 and NetBSD.

 I don't think fstat is appropriate for FreeBSD as it doesn't show the
 connection details:

 {{{
 USER     CMD          PID   FD MOUNT      INUM MODE         SZ|DV R/W
 _tor     tor         2567 text /usr/jails/tor-jail   4276 -r-xr-xr-x
 14677809  r
 _tor     tor         2567   wd /usr/jails/tor-jail   3715 drwx------
 13  r
 _tor     tor         2567 root /usr/jails/tor-jail      3 drwxr-xr-x
 21  r
 _tor     tor         2567 jail /usr/jails/tor-jail      3 drwxr-xr-x
 21  r
 _tor     tor         2567    0 /usr/jails/tor-jail/dev     25 crw-rw-rw-
 null rw
 _tor     tor         2567    1 /usr/jails/tor-jail/dev     25 crw-rw-rw-
 null rw
 _tor     tor         2567    2 /usr/jails/tor-jail/dev     25 crw-rw-rw-
 null rw
 _tor     tor         2567    3
 _tor     tor         2567    4* internet stream tcp fffffe0077706000
 _tor     tor         2567    5* internet stream tcp fffffe007504a000
 _tor     tor         2567    6* internet dgram udp fffffe0017ad3188
 _tor     tor         2567    7* internet stream tcp fffffe007505bb70
 _tor     tor         2567    8* internet stream tcp fffffe007505b7a0
 _tor     tor         2567    9* local stream fffffe0017b00c30
 _tor     tor         2567   10 /usr/jails/tor-jail/dev     65 crw-rw----
 pf rw
 _tor     tor         2567   11 /usr/jails/tor-jail    862 -rw-r-----
 24076  w
 _tor     tor         2567   12 /usr/jails/tor-jail    863 -rw-r-----
 12951160  w
 _tor     tor         2567   13 /usr/jails/tor-jail/dev     25 crw-rw-rw-
 null  w
 _tor     tor         2567   14 -          3721 -rw-------       0 rw
 _tor     tor         2567   15* internet stream tcp fffffe0077a94b70
 }}}

 Apparently it also gets the working directory wrong, and by the way it
 looks questionable in the OpenBSD example given above as well.

 "Arm hanging" is a problem I reported before in the past and I don't think
 it has anything to do with lsof. I've locally patched stem to use procstat
 instead of lsof (for other reasons) and it didn't make a difference.

 My impression is that only the GUI becomes unresponsive, control port
 traffic is still logged. It could be related to redraws, but I haven't
 recently looked at it.

 It would probably help debugging if arm would catch SIGHUP to "reboot the
 GUI" after logging the current state.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7813#comment:4>
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