Gentoo Archives: gentoo-hardened

From: "Anthony G. Basile" <blueness@g.o>
To: "Rick \\\"Zero_Chaos\\\" Farina" <zerochaos@g.o>
Cc: gentoo-hardened@l.g.o, hardened-dev@g.o, hardened@g.o, selinux@g.o, hardened-kernel@g.o
Subject: [gentoo-hardened] Re: Agenda for the meeting 2013-10-24 20:00UTC
Date: Tue, 22 Oct 2013 17:56:58
Message-Id: 5266BC69.1040403@gentoo.org
1 On 10/22/2013 01:09 PM, Rick "Zero_Chaos" Farina wrote:
2 > -----BEGIN PGP SIGNED MESSAGE-----
3 > Hash: SHA1
4 >
5 > On 10/21/2013 03:00 PM, Magnus Granberg wrote:
6 >> Agenda
7 >> 1.0 New Devloper
8 >> 2.0 Toolchain
9 >> 3.0 Kernel/Grsec/Pax
10 >> 3.1 Use pax_kernel
11 > The USE=pax_kernel is used for two reasons. One reason is XYZ needs to
12 > be done or pax kills the build/test. The second reason is XYZ needs to
13 > be done to build against a hardened kernel.
14
15 It is wrong to build anything against the kernel api except as defined
16 in /usr/include/linux, hardened or not. We have lots of ebuild which
17 look at the kernel source tree in /usr/src/linux and build against it.
18 These are broken. The kernel source tree exposes many internal
19 structures which are subject to change without notice, not the least of
20 which afflicted iptables for the longest time.
21
22 By extension, no ebuild should build against a hardened kernel source
23 tree. USE=pax_kernel should never mean "XYZ needs to be done to build
24 against a hardened kernel". It should only be used to mean "the ELFs
25 provided by this package *may* be run under a kernel with pax memory
26 protection enforced." If its a question of an out of source tree
27 kernel module being built and requiring a patch, eg constification, then
28 some other solution needs to be found.
29
30 What ebuilds are we talking about here that fit the later category?
31
32 --
33 Anthony G. Basile, Ph.D.
34 Gentoo Linux Developer [Hardened]
35 E-Mail : blueness@g.o
36 GnuPG FP : 1FED FAD9 D82C 52A5 3BAB DC79 9384 FA6E F52D 4BBA
37 GnuPG ID : F52D4BBA