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Subject: [bug#34859] [PATCH] pack: "-RR" produces PRoot-enabled relocatable
	binaries.
Resent-Message-ID: <handler.34859.B34859.155266109219637@debbugs.gnu.org>
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludovic.courtes@inria.fr>
References: <20190314161026.15696-1-ludo@gnu.org>
	<1ef41855caba45a267f90532d40a47f3@lepiller.eu>
Date: Fri, 15 Mar 2019 15:44:43 +0100
In-Reply-To: <1ef41855caba45a267f90532d40a47f3@lepiller.eu> (Julien Lepiller's
	message of "Fri, 15 Mar 2019 15:24:54 +0100")
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To: Julien Lepiller <julien@lepiller.eu>
Cc: 34859@debbugs.gnu.org

Hello!

Julien Lepiller <julien@lepiller.eu> skribis:

> How does it work? do you look for a proot on the system where the pack
> is unpacked, or is it included in the pack?

The pack includes =E2=80=98proot-static=E2=80=99, which takes approximately=
 1=C2=A0MiB.  The
=E2=80=98run-in-namespace.c=E2=80=99 wrapper determines its own location via
/proc/self/exe; from there it determines the location of the unpacked
store, and then determines the location of the statically-linked =E2=80=98p=
root=E2=80=99
program.

So it basically automates the PRoot trick described at
<https://guix-hpc.bordeaux.inria.fr/blog/2017/10/using-guix-without-being-r=
oot/>.

Ludo=E2=80=99.