not relabeling "/dev/:0".

Stephen Smalley sds at
Thu Dec 9 13:59:52 UTC 2004

On Wed, 2004-12-08 at 18:09, Nalin Dahyabhai wrote:
> I think some piece of code (pam_selinux maybe?) is assuming that
> prepending "/dev/" to the value of the PAM_TTY item results in a path
> which can be relabeled.  I think gdm sets it to ":0" on at least some
> platforms, for example.
> Is there a particular command or program being run when this happens, or
> is it happening when you log in?

Hmm...I thought that the SELinux patch for gdm was upstreamed and that
it no longer needed to use pam_selinux (and I seem to recall pam_selinux
not working for gdm anyway since the pam_open_session call was made from
the wrong process to set up the exec context), but I still see a
pam_selinux entry in /etc/pam.d/gdmsetup.  Ok, looking at the gdm SRPM,
there is definitely SELinux code in daemon/slave.c to get the user's
default context and set the exec context, so I don't see why you'd need
pam_selinux for it.

Stephen Smalley <sds at>
National Security Agency

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