linux-kernel - Re: [PATCH 2/1] apply: reject input that touches outside $cwd

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Message-ID: <xmqqegqcccjt.fsf@gitster.dls.corp.google.com>
Date:	Fri, 30 Jan 2015 11:07:34 -0800
From:	Junio C Hamano <gitster@...ox.com>
To:	Jeff King <peff@...f.net>
Cc:	Git Mailing List <git@...r.kernel.org>,
	Josh Boyer <jwboyer@...oraproject.org>,
	"Linux-Kernel\@Vger. Kernel. Org" <linux-kernel@...r.kernel.org>,
	twaugh@...hat.com, Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 2/1] apply: reject input that touches outside $cwd

Jeff King <peff@...f.net> writes:

> It looks like your new --allow-uplevel goes to verify_path(). So this
> isn't just about "..", but it will also protect against applying a patch
> inside ".git". Which seems like a good thing to me, but I wonder if the
> option name is a little misleading.

True; not just misleading but is incorrect, I would say.
Suggestions?

> I agree they are orthogonal in concept, though I doubt the symlink tests
> here would pass without the previous one...

It won't; "do not apply across symlinks" is unconditional, and the
new codepath introduced by this patch, which is conditional to the
user option, shouldn't have to worry about them.

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