linux-kernel - Re: [PATCH] allow execve'ing "/proc/self/exe" even if /proc is not mounted

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Message-ID: <824ou3mnb2.fsf@mid.bfk.de>
Date:	Fri, 26 Jun 2009 10:06:25 +0200
From:	Florian Weimer <fweimer@....de>
To:	Denys Vlasenko <vda.linux@...glemail.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, vapier@...too.org
Subject: Re: [PATCH] allow execve'ing "/proc/self/exe" even if /proc is not  mounted

* Denys Vlasenko:

> Some people want to unset CONFIG_PROC_FS, and still have
> working POSIX compatible shell.

Nowadays, the dynamic linker requires a mounted /proc with
/proc/self/exe for some features (notably $ORIGIN handling).  So it's
not self-exec only that doesn't work if /proc isn't there.  I guess
the kernel must make sure that /proc is always there (unlikely), or we
need a different mechanism to get this data.

-- 
Florian Weimer                <fweimer@....de>
BFK edv-consulting GmbH       http://www.bfk.de/
Kriegsstraße 100              tel: +49-721-96201-1
D-76133 Karlsruhe             fax: +49-721-96201-99
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