Re: [gentoo-user] How to poweroff the system from user?

[microcai <microcai@fedoraproject.org>]

on Saturday 21 March 2015 13:58:45，Canek Peláez Valdés wrote：
> On Sat, Mar 21, 2015 at 1:47 PM, Rich Freeman <rich0@gentoo.org> wrote:
> > On Sat, Mar 21, 2015 at 3:39 PM, German <gentgerman@gmail.com> wrote:
> > > No, I am trying to shutdown from a console
> > 
> > Well, the old answer would be that you need to use sudo to run it, as
> > shutting down is a privileged operation.
> > 
> > I suspect that the new answer is that with appropriate
> > policykit/consolekit/etc settings you can probably allow somebody
> > sitting at a physical console to shut down the system, or any
> > logged-in user if you prefer.  However, I haven't actually set that up
> > myself.
> 
> logind does that for you automagically™. The first seat has the rights to
> poweroff or reboot the machine, and it can differentiate between local and
> remote logins. You can check if your user session has the permissions to
> poweroff/reboot via dbus:
> 
> $ gdbus call --system --dest org.freedesktop.login1 --object-path
> /org/freedesktop/login1 --method org.freedesktop.login1.Manager.CanPowerOff
> ('yes',)
> 
> $ gdbus call --system --dest org.freedesktop.login1 --object-path
> /org/freedesktop/login1 --method org.freedesktop.login1.Manager.CanReboot
> ('yes',)
> 
> But you need systemd to use logind1. There has been some attempts to
> reimplement logind outside systemd, but I'm not sure how advanced they are.
> 
> This kind of problems were one of the reasons for creating logind.
> 

and dump people keep talking nonsencely that sysvinit is enough while it 
cannot even handle reboot for normal user. sad.


> Regards.
> --
> Canek Peláez Valdés
> Profesor de asignatura, Facultad de Ciencias
> Universidad Nacional Autónoma de México