Hello Lennart!
On Mon, May 12, 2014 at 06:52:59PM +0200, Lennart Poettering wrote:
> On Mon, 12.05.14 18:40, Michael Biebl (bi...@debian.org) wrote:
> > 1/ I don't want to re-implement the escaping rules outside of systemd,
> > especially since I don't know the escaping rules.
> > 2/ It's hard to escape the interface name from withing a udev rule,
> > unless I call a shell script, where I do the escaping using sed dances.
> > This is ugly, to say the least.
> > 3/ systemctl status ifup@my-eth.service is much more intuitive then
> > systemctl status ifup@my\x2deth.service.
> > Auto-completing helps a bit, but it doesn't get the quoting right [0],
> > so the failure mode is very confusing.
> Unit names must be escaped. And then %I can be used to undo that.
>
> Hence you cann include anything unescaped in the unit name, it just
> doesn't work...
Now it is clear that it is the caller's responsibility to do encoding of
unit names. Caller can be: administrating user, software packager i. e.
distributor, software author, etc.
As such one doesn't have knowledge about the exact details how the
encoding has to be done, and "sed dances" tend to be error prone but
nevertheless will be implemented many times in an ad-hoc manner.
==> systemd could help with a small utility around unit_name_escape()
So that this is possible:
systemctl start sys-devices-virtual-net-@$(encodeunitname my-dev).device
What about such addition resp. accepted patch?
Regards,
Gero
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