[vdr] auto shutdown (-s) question

Udo Richter udo_richter at gmx.de
Sat Feb 7 12:24:11 CET 2009


On 07.02.2009 11:26, Ville Skyttä wrote:
>> VDR does not know whether the shutdown script initiated the shutdown or
>> decided to ignore it,
>
> I suppose it would be quite easy to implement that and maybe some other
> scenarios as well using shutdown script exit statuses.  For example exit
> status 0 = shutdown successfully initiated (already in current VDR), 10 =
> shutdown ignored, 11 = something else, 12 = something else, anything else =
> an unexpected error occurred.

Unfortunately it's not that easy. Currently, VDR backgrounds the call to 
the shutdown script, and detaches the shutdown script from the VDR 
process. Only because of that, the script can 'survive' the kill of VDR, 
and only because of that the script can display messages via SVDRP.

However, this means that the error level return of the script is unknown 
to VDR, and is (and was) always ignored. Some shutdown scripts do set 
error levels, but there's no common definition about the meaning of 
error levels. Defining error levels for the shutdown script would 
thereby be potentially incompatible to existing scripts.

Another solution to this would be an external activity handler that is 
controlled via SVDRP commands, and that provides activity control 
comparable to plugins for one external instance - the shutdown script. 
This could either be done by a plugin or a VDR patch.


Cheers,

Udo



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