[systemd-devel] [PATCH] detect-virt: do not return exit failure code when the state is none

[Zbigniew Jędrzejewski-Szmek]

On Fri, May 25, 2018 at 10:25:08AM +0200, Franck Bui wrote:
> Hi Joey,
> 
> On 05/25/2018 09:33 AM, joeyli wrote:
> > 
> > Do you have good idea to inhibit the exit failure to avoid the subsequent
> > activity be blocked?
> > 
> 
> For the context the actual rule is:
> 
> SUBSYSTEM=="memory", ACTION=="add",
> PROGRAM=="/usr/bin/systemd-detect-virt", RESULT!="zvm", ...
> 
> You can use PROGRAM=="/bin/sh -c '/usr/bin/systemd-detect-virt || :'" so
> the exit status of systemd-detect-virt is explicitly ignored.
> 
> I assume that if systemd-detect-virt fails then the value of RESULT will
> be the empty string (you should check).

It will be empty if -q is passed, and "none" without it.

Zbyszek