[mythtv-commits] Ticket #7832: Add support to drop permissions if running as root

[MythTV]

#7832: Add support to drop permissions if running as root
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 Reporter:  superm1@…           |        Owner:  ijr   
     Type:  patch               |       Status:  closed
 Priority:  minor               |    Milestone:  0.23  
Component:  MythTV - General    |      Version:  head  
 Severity:  medium              |   Resolution:  fixed 
  Mlocked:  0                   |  
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Comment(by chckens@…):

 I'm running the latest packaged version of MythTV in Ubuntu Lucid, and
 this change seems to be causing problems with opening tuners.

 My mythtv user is in the video group, and my tuners are all set to group
 video and are group writable:

 {{{
 graham at mauru:/home/lounge$ ls -l /dev/dvb/adapter0/frontend0
 crw-rw----+ 1 root video 212, 7 2010-02-21 12:00
 /dev/dvb/adapter0/frontend0
 }}}

 Yet when run from the upstart script which runs myth with --user mythtv,
 it's unable to access the tuners:

 {{{
 2010-02-20 12:12:52.103 DVBChan(1:/dev/dvb/adapter0/frontend0) Warning:
 Opening
 DVB frontend device failed.
                         eno: Permission denied (13)
 }}}

 I tried su-ing to the mythtv user and running mythbackend without a --user
 parameter, then everything works as expected.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/7832#comment:4>
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