FC2 useradd in chroot on FC5 host with SELinux
Stephen Smalley
sds at tycho.nsa.gov
Wed Aug 9 12:33:14 UTC 2006
On Wed, 2006-08-09 at 09:27 +0100, Paul Howarth wrote:
> On Thu, 2006-07-13 at 17:59 +0100, Paul Howarth wrote:
> > Daniel J Walsh wrote:
> > > Paul Howarth wrote:
> > >> Daniel J Walsh wrote:
> > >>> Paul Howarth wrote:
> > >>>> I use mock to build packages for old distributions in a chroot-ed
> > >>>> environment on my FC5 box. I've pretty well got this working for all
> > >>>> old
> > >>>> distributions now apart from FC2 (see
> > >>>> http://www.fedoraproject.org/wiki/Legacy/Mock). On FC2, the process
> > >>>> gets
> > >>>> off to quite a good start, installing the following packages into the
> > >>>> chroot:
> > >>>>
> > >>>> =============================================================================
> > >>>>
> > >>>> Package Arch Version Repository
> > >>>> Size
> > >>>> =============================================================================
> > >>>>
> > >>>> Installing:
> > >>>> buildsys-build noarch 0.5-1.CF.fc2 groups
> > >>>> 1.8 k
> > >>>> Installing for dependencies:
> > >>>> SysVinit i386 2.85-25 core
> > >>>> 96 k
> > >>>> basesystem noarch 8.0-3 core
> > >>>> 2.7 k
> > >>>> bash i386 2.05b-38 core
> > >>>> 1.5 M
> > >>>> beecrypt i386 3.1.0-3 core
> > >>>> 64 k
> > >>>> binutils i386 2.15.90.0.3-5 core
> > >>>> 2.8 M
> > >>>> buildsys-macros noarch 2-2.fc2 groups
> > >>>> 2.1 k
> > >>>> bzip2 i386 1.0.2-12.1 core
> > >>>> 48 k
> > >>>> bzip2-libs i386 1.0.2-12.1 core
> > >>>> 32 k chkconfig i386 1.3.9-1.1 core
> > >>>> 99 k
> > >>>> coreutils i386 5.2.1-7 core
> > >>>> 2.8 M
> > >>>> cpio i386 2.5-6 core
> > >>>> 45 k
> > >>>> cpp i386 3.3.3-7 core
> > >>>> 1.4 M
> > >>>> cracklib i386 2.7-27.1 core
> > >>>> 26 k
> > >>>> cracklib-dicts i386 2.7-27.1 core
> > >>>> 409 k
> > >>>> db4 i386 4.2.52-3.1 core
> > >>>> 1.5 M
> > >>>> dev i386 3.3.13-1 core
> > >>>> 3.6 M
> > >>>> diffutils i386 2.8.1-11 core
> > >>>> 205 k
> > >>>> e2fsprogs i386 1.35-7.1 core
> > >>>> 728 k
> > >>>> elfutils-libelf i386 0.95-2 core
> > >>>> 36 k
> > >>>> ethtool i386 1.8-3.1 core
> > >>>> 48 k
> > >>>> fedora-release i386 2-4 core
> > >>>> 92 k
> > >>>> file i386 4.07-4 core
> > >>>> 242 k
> > >>>> filesystem i386 2.2.4-1 core
> > >>>> 18 k
> > >>>> findutils i386 1:4.1.7-25 core
> > >>>> 102 k
> > >>>> gawk i386 3.1.3-7 core
> > >>>> 1.5 M
> > >>>> gcc i386 3.3.3-7 core
> > >>>> 3.8 M
> > >>>> gcc-c++ i386 3.3.3-7 core
> > >>>> 2.0 M
> > >>>> gdbm i386 1.8.0-22.1 core
> > >>>> 26 k
> > >>>> glib i386 1:1.2.10-12.1.1 core
> > >>>> 134 k
> > >>>> glib2 i386 2.4.8-1.fc2 updates-released
> > >>>> 477 k
> > >>>> glibc i686 2.3.3-27.1 updates-released
> > >>>> 4.9 M
> > >>>> glibc-common i386 2.3.3-27.1 updates-released
> > >>>> 14 M
> > >>>> glibc-devel i386 2.3.3-27.1 updates-released
> > >>>> 1.9 M
> > >>>> glibc-headers i386 2.3.3-27.1 updates-released
> > >>>> 530 k
> > >>>> glibc-kernheaders i386 2.4-8.44 core
> > >>>> 697 k
> > >>>> grep i386 2.5.1-26 core
> > >>>> 168 k
> > >>>> gzip i386 1.3.3-12.2.legacy updates-released
> > >>>> 88 k
> > >>>> info i386 4.7-4 updates-released
> > >>>> 147 k
> > >>>> initscripts i386 7.55.2-1 updates-released
> > >>>> 906 k
> > >>>> iproute i386 2.4.7-14 core
> > >>>> 591 k
> > >>>> iputils i386 20020927-13 core
> > >>>> 92 k
> > >>>> less i386 382-3 core
> > >>>> 85 k
> > >>>> libacl i386 2.2.7-5 core
> > >>>> 15 k
> > >>>> libattr i386 2.4.1-4 core
> > >>>> 8.6 k
> > >>>> libgcc i386 3.3.3-7 core
> > >>>> 33 k
> > >>>> libselinux i386 1.11.4-1 core
> > >>>> 45 k
> > >>>> libstdc++ i386 3.3.3-7 core
> > >>>> 240 k
> > >>>> libstdc++-devel i386 3.3.3-7 core
> > >>>> 1.3 M
> > >>>> libtermcap i386 2.0.8-38 core
> > >>>> 12 k
> > >>>> make i386 1:3.80-3 core
> > >>>> 337 k
> > >>>> mingetty i386 1.07-2 core
> > >>>> 18 k
> > >>>> mktemp i386 2:1.5-7 core
> > >>>> 12 k
> > >>>> modutils i386 2.4.26-16 core
> > >>>> 395 k
> > >>>> ncurses i386 5.4-5 core
> > >>>> 1.5 M
> > >>>> net-tools i386 1.60-25.1 updates-released
> > >>>> 311 k
> > >>>> pam i386 0.77-40 core
> > >>>> 1.9 M
> > >>>> patch i386 2.5.4-19 core
> > >>>> 61 k
> > >>>> pcre i386 4.5-2 core
> > >>>> 59 k
> > >>>> perl i386 3:5.8.3-18 core
> > >>>> 11 M
> > >>>> perl-Filter i386 1.30-5 core
> > >>>> 68 k
> > >>>> popt i386 1.9.1-0.4.1 updates-released
> > >>>> 61 k
> > >>>> procps i386 3.2.0-1.2 updates-released
> > >>>> 176 k
> > >>>> psmisc i386 21.4-2 core
> > >>>> 41 k
> > >>>> redhat-rpm-config noarch 8.0.28-1.1.1 core
> > >>>> 41 k
> > >>>> rpm i386 4.3.1-0.4.1 updates-released
> > >>>> 2.2 M
> > >>>> rpm-build i386 4.3.1-0.4.1 updates-released
> > >>>> 437 k
> > >>>> sed i386 4.0.8-4 core
> > >>>> 116 k
> > >>>> setup noarch 2.5.33-1 core
> > >>>> 29 k
> > >>>> shadow-utils i386 2:4.0.3-55 updates-released
> > >>>> 671 k
> > >>>> sysklogd i386 1.4.1-16 core
> > >>>> 65 k
> > >>>> tar i386 1.13.25-14 core
> > >>>> 351 k
> > >>>> termcap noarch 11.0.1-18.1 core
> > >>>> 237 k
> > >>>> tzdata noarch 2005f-1.fc2 updates-released
> > >>>> 449 k
> > >>>> unzip i386 5.50-37 core
> > >>>> 139 k
> > >>>> util-linux i386 2.12-19 updates-released
> > >>>> 1.5 M
> > >>>> which i386 2.16-2 core
> > >>>> 21 k
> > >>>> words noarch 2-22 core
> > >>>> 137 k
> > >>>> zlib i386 1.2.1.2-0.fc2 updates-released
> > >>>> 44 k
> > >>>>
> > >>>> After installing all of these packages successfully, the next thing
> > >>>> that
> > >>>> happens is:
> > >>>>
> > >>>> Executing /usr/sbin/mock-helper
> > >>>> chroot /var/lib/mock/fedora-2-i386-core/root /bin/su - root -c
> > >>>> "/usr/sbin/useradd -m -u 500 -d /builddir mockbuild"
> > >>>>
> > >>>> and at that point the "useradd" process just hangs indefinitely. I'm
> > >>>> told that if SELinux is disabled (I've tried permissive mode and that
> > >>>> doesn't help), this works. I can't see any AVCs in the logs.
> > >>>>
> > >>>> Any ideas what might be causing this and how it might be fixed?
> > >>
> > >>
> > >>> In fc2 you should disable SELinux.
> > >>
> > >> I'm running this on FC5; what I'm trying to do is set up a chroot with
> > >> FC2 packages. This includes the FC2 version of useradd, and it's this
> > >> that's hanging when run in the chroot.
> > >>
> > >> I'd happily give things in the chroot the impression that SELinux is
> > >> disabled (I believe mock actually does this already) but I *really*
> > >> don't want to disable SELinux on my FC5 host.
> > >>
> > >> Paul.
> > > I have no idea why this would happen then. And I am not sure I believe
> > > them when they say that if SELinux was disabled this would work
> > > differently, unless there is a kernel bug. You are not seeing avc
> > > messages, correct?
> >
> > Correct.
> >
> > > Usually if it does not work in permissive mode it is
> > > not an SELinux problem.
> >
> > *Usually*...
> >
> > I guess I'll have to bite the bullet and try it with SELinux disabled
> > (so I'll have to relabel my desktop box afterwards, sigh). I know of two
> > people that have this working with SELinux disabled, and I vaguely
> > recall it working for me when I was first trying this (with SELinux
> > disabled, probably a year ago). I've got it working for everything from
> > RHL7 through to FC5 targets apart from FC2, so I doubt I'm doing
> > something significantly wrong.
>
> I've now got a nice shiny new x86_64 box so at last I've been able to
> sacrifice my old build system by disabling SELinux on it. My
> recollection was correct - the mock build for FC2 worked just fine with
> SELinux disabled.
>
> Any thoughts on what might be going on here?
Did you ever try stracing the useradd process to see what it is doing at
the point where it hangs?
--
Stephen Smalley
National Security Agency
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