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Escape to CLI (was: Re: [PATCH] broken ESC navigation if authentication


From: Andrei Borzenkov
Subject: Escape to CLI (was: Re: [PATCH] broken ESC navigation if authentication is used)
Date: Tue, 10 Nov 2015 21:48:16 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

10.06.2015 19:29, Florian Kaiser пишет:
Hi,

we are using grub2 with authentication enabled and multiple submenus.
Unfortunately it is not possible to return to a previous menu with ESC without
triggering a superuser password prompt. This is not the desired behavior in
my opinion.
I attached a patch to this email, which removes the password prompt when
pressing escape.


Actually I could not even reproduce it at first. The problem is, new submenu opens new context and unless `superusers' is exported as soon as we enter submenu no authentication is required at all (including entering CLI).

I am not sure whether this is intentional, but this is definitely unexpected. And due to complete lack of description of variable scoping in GRUB it is also undocumented.

Options are

- simply document variable scoping and mention it in authentication description

- propagate superusers to submenus, rely on normal export in nested config. Still needs documentation what export actually does.

- export superusers by default and document it in description.



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