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Re: [PATCH v2 2/5] load_env support for whitelisting which variables are


From: Andrey Borzenkov
Subject: Re: [PATCH v2 2/5] load_env support for whitelisting which variables are read from an env file, even if check_signatures=enforce
Date: Fri, 6 Sep 2013 23:48:45 +0400

В Fri,  6 Sep 2013 09:18:50 -0700
Jon McCune <address@hidden> пишет:

> This works by adding an open_envblk_file_untrusted() method that bypasses
> signature checking, but only if the invocation of load_env includes a
> whitelist of one or more environment variables that are to be read from the
> file.

What is the use case? load_env is called exactly once at the beginning
of configfile processing. At this point file still has valid signature
assuming grub-editenv (or some other tool) computed one. When do you
need to load environment more than once? 



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