[MPlayer-users] Starting mplayer from inittab breaks slave mode

[Roguedr]

I have tried that too and it does not seem to be the case. Also tried
providing full access rights to the pipe and changing pipe ownership
to nobody. Still no luck.

Started from command line it works no matter what, starting from a
background process it does not get attached to the pipe.

Any further hints?


Thanks,
Rogue


On Thu, Mar 29, 2012 at 2:19 PM, Ron Johnson <ron.l.johnson at cox.net> wrote:
> On 03/29/2012 12:53 AM, Roguedr wrote:
>>
>> Not sure if this is a mplayer issue or some misunderstanding about how
>> linux works.
>>
>> I intend to have a media player set up that starts mplayer on boot and
>> is controlled to slave mode.
>> I created a fifo file and stored all the configuration in the
>> /etc/mplayer/mplayer.conf file. Then I tested mplayer from the command
>> line and everything works well.
>>
>> Next step was to put mplayer in inittab using something like:
>>
>> mp:2345:respawn:/usr/bin/mplayer -idle
>>
>> This works well, i.e. mplayer starts (tested this with a video file
>> and it plays). However mplayer does not attach to the fifo pipe.
>> I tested this with 'lsof' and mplayer simply does not attach to the
>> pipe. Even with aggressive logging I was unable to identify any error
>> messages.
>>
> [snip]
>
>>
>> Next I set up autologin for a user and put mplayer in the login
>> script. This works, mplayer plays and is attached to the pipe for
>> slave mode.
>>
>>
>> Question is, why does mplayer attach to the pipe only in case of an
>> interactive login? Is this expected behaviour?
>>
>
> Probably because mplayer started through inittab runs as root and I'm
> betting there's a security/permissions issue with allowing unpriv users
> attach to pipes owned by root.
>
> A different method that *might* work is to put this in rc.local:
> su -l -c 'mplayer -idle' joe
>
> --
> "There is usually only a limited amount of damage that can be
> done by dull or stupid people. For creating a truly monumental
> disaster, you need people with high IQs."
> Thomas Sowell
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