Gentoo Archives: gentoo-dev

From: "Paweł Hajdan
To: gentoo-dev@l.g.o
Subject: [gentoo-dev] RFC: virtual/shadow
Date: Thu, 08 Mar 2012 13:24:49
Message-Id: 4F58B2C7.3050109@gentoo.org
1 I'd like to add <http://code.google.com/p/hardened-shadow/> to the tree.
2 It is an alternative implementation of shadow utilities (passwd, su,
3 login, etc) based on ideas from Openwall's tcb.
4
5 Earlier I tried upstreaming the Openwall's shadow patches, and you can
6 see a log of those efforts at
7 <http://comments.gmane.org/gmane.linux.debian.alioth.pkg-shadow/881>
8
9 In the end shadow-4.1.5 has some experimental support for tcb, but
10
11 1) It's incomplete (I didn't manage to upstream all Openwall's patches).
12 2) It's ugly (even more "special cases" in the already #ifdef-heavy
13 codebase).
14 3) It requires sys-auth/tcb, which doesn't work with vanilla glibc (I'm
15 maintaining tcb in Gentoo and have special patch for that, reviewed by
16 upstream), and is broken with recent glibc
17 (<https://bugs.gentoo.org/show_bug.cgi?id=371167>).
18
19 And now we have <http://code.google.com/p/hardened-shadow/> which is a
20 small alternative implementation, possibly going even further (the file
21 system layout is a bit different than with tcb).
22
23 I'd like to add virtual/shadow-0, with the following dependencies:
24
25 DEPEND=""
26 RDEPEND="|| ( >=sys-apps/shadow-4.1 sys-apps/hardened-shadow )"
27
28 hardened-shadow package is not yet in the tree, I'm going to be its
29 maintainer (base-system or anyone else is welcome to join), and the
30 ebuild is going to be very simple.
31
32 And then convert profiles to the new virtual (the relevant files; below
33 are all occurrences of sys-apps/shadow):
34
35 $ grep 'sys-apps/shadow' -r /usr/portage/profiles/
36 /usr/portage/profiles/ChangeLog-2011: Added sys-apps/shadow to
37 packages.build as we need it on stage1.
38 /usr/portage/profiles/prefix/packages:-*>=sys-apps/shadow-4.1
39 /usr/portage/profiles/prefix/package.provided:sys-apps/shadow-0
40 /usr/portage/profiles/base/packages:*>=sys-apps/shadow-4.1
41 /usr/portage/profiles/uclibc/packages.build:sys-apps/shadow
42 /usr/portage/profiles/default/bsd/ChangeLog: Add -*>=sys-apps/shadow-4.1
43 /usr/portage/profiles/default/bsd/package.mask:sys-apps/shadow
44 /usr/portage/profiles/default/bsd/packages:-*>=sys-apps/shadow-4.1
45 /usr/portage/profiles/default/linux/packages.build:sys-apps/shadow
46 /usr/portage/profiles/use.local.desc:sys-apps/shadow:audit - Enable
47 support for sys-process/audit
48 /usr/portage/profiles/use.local.desc:sys-apps/shadow:tcb - Enable
49 support for sys-auth/tcb
50
51 And any reverse dependencies (after testing):
52
53 <http://tinderbox.dev.gentoo.org/misc/dindex/sys-apps/shadow>
54
55 What do you think?

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Re: [gentoo-dev] RFC: virtual/shadow "Paweł Hajdan