[LightDM] Guest logins and PAM

[Veli-Matti Lintu]

Hi,

Yes, that really seems to be the case and I probably did something wrong I tried it for the first time. Everything works like a charm now. Thanks and sorry for the noise.

Veli-Matti

----- Original Message -----
From: "Robert Ancell" <robert.ancell at gmail.com>
To: "Veli-Matti Lintu" <veli-matti.lintu at opinsys.fi>
Cc: "LightDM Mailing List" <lightdm at lists.freedesktop.org>
Sent: Monday, February 24, 2014 6:11:54 AM
Subject: Re: [LightDM] Guest logins and PAM

Guest logins are done using a newly created user and the autologin stack.


On 22 February 2014 02:21, Veli-Matti Lintu <veli-matti.lintu at opinsys.fi>wrote:

> Hi,
>
> I've been going through lightdm's guest login flow to find a place where I
> could initialise sessions for normal logins and guest sessions the same
> way. This includes creating some directories and files as root and setting
> some env variables. So far I've been using pam_env.so and pam_exec.so to
> call the scripts in various stages of the PAM stack. Some of these are
> called also for ssh logins, so PAM has been a natural place for these.
>
> lightdm uses a separate PAM stacks for normal and autologins, but it seems
> to bypass PAM completely for guest logins. What is the background for this?
> Would it be possible to add PAM support for guest logins? I'm not yet
> familiar enough with the code to say this myself. I'm about to start
> digging into the code better, but having some pointers would be really nice.
>
> Thanks,
>
> Veli-Matti
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