On Sat, Dec 31, 2016 at 07:47:54AM -0000, Karl Palsson wrote:
> > | Modern desktop systems with systemd recommend this way to give users
> > | access to devices. We change permissions to sane value along the way.
> > 
> > The change allows access to the devices by users which have
> > physical access to the machine, while it prevents remote users
> > from accessing the device. The Debian note reads:
> 
> Really? Pretty sure that "uaccess" is users with access, no
> matter where they are. "useat" is the special tag for local
> users.
> 
> But hey, systemd documentation, who knows where the answer really
> is.

Their documentation sucks indeed.

Accoding to what I was able to gather, uaccess tag is eventually
handled by calling udevd's builtin "uaccess" which is processed by

https://github.com/systemd/systemd/blob/master/src/udev/udev-builtin-uaccess.c

It seems pretty explicit about giving permissions strictly for the
user that's currently active on "seat0" (or any other seat if the
rules processing resulted in assigning appropriate ID_SEAT property).

According to [2] "ssh logins" do not get assigned to any seat anyhow.

[2] https://www.freedesktop.org/wiki/Software/systemd/multiseat/

-- 
Be free, use free (http://www.gnu.org/philosophy/free-sw.html) software!
mailto:fercer...@gmail.com

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