[systemd-devel] Variable expansion in ConditionPathExists

[Zbigniew Jędrzejewski-Szmek]

On Thu, Dec 25, 2014 at 03:36:15PM +0100, Zbigniew Jędrzejewski-Szmek wrote:
> On Wed, Dec 24, 2014 at 10:37:50AM -0200, Marcos Felipe Rasia de Mello wrote:
> > Hi,
> > 
> > I have a system service that runs with a normal user account
> > ([Service] User=bla). I tried
> > 
> > [Unit]
> > ConditionPathExists=$HOME/config.xml
> > 
> > but it does not work:
> > 
> > systemd[1]: [/etc/systemd/system/bla.service:4] Path in condition not
> > absolute, ignoring: $HOME/config.xml
> > 
> > %h also does not work (expand to /root). I am running
> > systemd-216-12.fc21.x86_64.
> > 
> > It is not crucial to my service, still can be useful perhaps?
> Hi,
> unfortunately %h is not really supported anymore. Man page should be
> updated, since it's rather misleading at the moment. It was removed
> in systemd 209:
> 
>   * %h, %s, %U specifier support is not available anymore when
>     used in unit files for PID 1. This is because NSS calls are
>     not safe from PID 1. They stay available for --user
>     instances of systemd, and as special case for the root user.
The manpage *did* already say that %h does not work, but it a somewhat
roundabout way. I now added a seperate paragraph which describes why it
shouldn't be used.

Zbyszek