Re: temporary hack to use udev in selinux

[Luke Kenneth Casson Leighton <lkcl@lkcl.net>]

hiya joshua,

a recent release of udev (0.26) from like, two weeks ago
(which i only just noticed) appears to have had its
udev "hard-coded" support removed - and incidentally
the equally hard-coded dbus support removed...

... to be replaced with an /etc/dev.d/something/selinux
which runs restorecon $DEVICE.

and, amazingly, it works.

what is getting my goat at the moment is as i said having
to use /udev instead of /dev.

GREAT.  a patch.

it wouldn't have occurred to me to do the inode and special
node stuff.

thanks v. much.

l.

On Wed, Jul 28, 2004 at 08:29:45PM -0400, Joshua Brindle wrote:
> Luke Kenneth Casson Leighton wrote:
> 
> >i have a requirement (use of usb-mount, see
> >http://users.actrix.co.nz/michael/usbmount.html) that forces the use
> >of udev on an selinux system.
> >
> >fighting with it for a day, and after seeing some clues in the
> >file contexts (/(u)dev/....) i decided to try editing
> >/etc/udev/udev.conf to set it to use /udev instead of /dev.
> >
> >other than a warning about udev not starting up, well, everything
> >seems to work hunky-dory.
> >
> >somehow i do _get_ a udevd running, i could not tell you how it got
> >there.
> >
> >i notice the following message 
> >
> >	http://www.redhat.com/archives/fedora-devel-list/2004-March/msg00888.html
> >
> >in which steven (hi steven :) says that support for udev "fake"
> >attributes for ramfs and tmpfs, just like for devpts.
> >
> >is that literally as simple as cut/paste the devpts code...
> >the xattr stuff?
> >
> >cos if so, i _like_ cut/paste :)
> >
> >l.
> >
> > 
> >
> Chris PeBenito made this patch for Gentoo when we were evalutating udev 
> on selinux
> 
> http://dev.gentoo.org/~method/1330_linux-2.6.5-ramfs-xattr.patch
> 
> that should patch cleanly into 2.6.7, but I'd like to note that at this 
> point udev is braindead wrt SELinux.
> Once upon a time udev had selinux support integrated so that setfscreate 
> was called to set the context of the devices being written however it 
> was changed at some point to make SELinux an after device creation addon 
> script which makes it label the devices after they are created. Because 
> of this Hardened Gentoo has decided not to support udev at this time.
> 
> 
> Joshua Brindle

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