[mythtv-users] Powering off computer as non-root

Piers Kittel mythtv at biased.org
Tue Dec 27 19:16:29 EST 2005

No display manager and not using KDE.

When the computer boots up, it loads mythfrontend on its own.  No log in 
manager, nothing.  It's intended to be used only for a frontend in my 
bedroom, so no big deal if someone hacked in and powered the frontend 
off - very unlikely anyway.

Hmm.  But then again, the files for the frontend is on the server 
(diskless frontend using netboot you see) so the halt command is open to 
all on the server....  best check that then!  Hmm, I seem to be able to 
access halt via my server as a non-root user - not going to actually 
invoke the command though!  Maybe best to move the halt command 
somewhere else, rename it to something like "fluffy_teddies" - no-one'll 
find it...?

Cheers - Piers

Jonathan Tidmore wrote:
> Are you using kde?  Which Display Manager are you using?  GDM, KDM, XDM?
> chmod +s /sbin/halt is not a good idea.
> On 12/27/05, *R. Geoffrey Newbury* <newbury at mandamus.org 
> <mailto:newbury at mandamus.org>> wrote:
>     On Tue, 27 Dec 2005 01:58:15 +0000, Piers Kittel wrote:
>      >Hello all,
>      >
>      >Mythfrontend is set to turn off my computer using the command "halt".
>      >Mythfrontend is run as an non-root user - in this case user
>     "piers" - so
>      >when I try to exit MythTV, and I select "Yes, exit and shutdown" - it
>      >jsut says "Command not found".  Obviously this command isn't available
>      >to non-root users.  So how do I enable the user "piers" to be able to
>      >shut down the computer without opening up too many obvious
>     security holes?
>     put a copy of the program in /home/piers or /home/mythtv as
>     applicable and
>     chmod it so that user 'piers'  or 'mythtv' can execute it.
>     If user mythtv "owns" mythfrontend, then only mythtv and root will
>     be able
>     to execute the shutdown.
>     Geoff
>     R. Geoffrey Newbury                          newbury at mandamus.org
>     <mailto:newbury at mandamus.org>
>     Barrister and Solicitor                         Telephone: 905-271-9600
>     Mississauga,Ontario, Canada              Facsimile:   905-271-1638
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> -- 
> Jonathan Tidmore
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