libselinux: simple interface for access checks

Some programs, like passwd, need to do simeple one time access checks.
Rather than set up a full avc cache and use that infrastructure they
were directly using security_compute_av.  A problem with this approach
is the lack of audit on denials.  This patch creates a new interface
that is simple to use and which will still listen to things like
permissive and output audit messages on denials.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Dan Walsh <dwalsh@redhat.com>
4 files changed