Quoting Matthias Bodenbinder (matth...@bodenbinder.de):
> Am 29.03.2015 um 17:35 schrieb Michael Biebl:
> > Am 29.03.2015 um 11:42 schrieb Matthias Bodenbinder:
> >> Am 28.03.2015 um 18:51 schrieb Michael Biebl:
> >>> You can run something like
> >>>
> >>> systemd-inhibit --what=shutdown --mode=block /bin/sleep 3600
> >>>
> >>> to block shutdown for 1h.
> >>
> >> This does NOT work. I tested it with debian testing.
> >
> > Are you sure you are using systemd as PID 1?
>
> PID 1 is /sbin/init
> with
> lrwxrwxrwx 1 root root 20 Feb 13 12:22 /sbin/init -> /lib/systemd/systemd
>
> All my tests where with local root: KDE+konsole, as regular user. Either
> executing "poweroff" via "su -" in the konsole or clicking shutdown button in
> KDE.
>
> Example:
>
> In konsole #1:
> su -
> systemd-inhibit --what="idle:sleep:shutdown" --mode=block sleep 3600
>
> In konsole #2:
> su -
> poweroff
>
> The computer is just powered off.
Not using KDE myself, I can only comment on the CLI (and thanks for
the clear posting). I think you need to understand that root privilege
overrides any inhibitions, as one might expect.
This is what works for me:
jessiebox ~$ /bin/su -
Password:
jessiebox ~# systemd-inhibit --what="idle:sleep:shutdown" --mode=block sleep
3600
and moving to a VC or another xterm:
jessiebox ~$ /sbin/poweroff
Operation inhibited by "sleep 3600" (PID 28227 "systemd-inhibit", user root),
reason is "Unknown reason".
Please retry operation after closing inhibitors and logging out other users.
Alternatively, ignore inhibitors and users with 'systemctl poweroff -i'.
jessiebox ~$
jessiebox ~$ systemctl poweroff -i
==== AUTHENTICATING FOR org.freedesktop.login1.power-off-ignore-inhibit ===
Authentication is required for powering off the system while an application
asked to inhibit it.
Authenticating as: root
Password: [password not typed] Failed to execute operation: Connection timed out
Failed to start poweroff.target: Access denied
polkit-agent-helper-1: pam_authenticate failed: Authentication failure
jessiebox ~$
Now that would have worked if I had typed the password.
jessiebox ~$ systemd-inhibit --list
Who: /bin/sleep 3600 (UID 0/root, PID 4051/systemd-inhibit)
What: shutdown
Why: Unknown reason
Mode: block
1 inhibitors listed.
jessiebox ~$
AIUI it's up to root to check for inhibitions. I also get te
impression that mollyguard is really just for trying to prevent you
accidently closing down a machine you've ssh'd to because you think
you're still local. (I prevent this by using differently coloured
prompt strings.) I don't know how well it's integrated with systemd.
Cheers,
David.
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