Bug#1093002: rng-tools-debian: systemd service fails instead of skipping

[Sven Geuer]

On Wed, 2025-01-15 at 20:28 +0100, Thorsten Glaser wrote:
> On Wed, 15 Jan 2025, Sven Geuer wrote:
> 
> > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=504044#162
> 
> > Applying ExecCondition to me seems the most reasonable solution to this
> > bug.
> 
> Can the script behind ExecCondition pass variables to the script
> behind ExecStart or, even better, the unit itself so we can then
> use $HRNGDEVICE and $RNGDOPTIONS there?

Found no suitable way to achieve this. One can write a file to hold the
variables and their values when checking the conditions, and read it
back when actually starting the service, but this seems a clunky
approach to me.

> 
> If not, I’d lean towards one (which?) of the errorlevel-using ones,
> because otherwise we’d have to run the detection code twice.

Not sure what you mean by 'one of the errorlevel-using ones'. Please
explain your idea in more details.

My current solution indeed needs to run the detection code twice.

> 
> > I believe the service should get skipped per ExecCondition also in this
> > case (no random device found/available).
> 
> OK.
> 
> bye,
> //mirabilos

Sven

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