How do I tell if SELinux is working?

Colin Walters walters at
Wed Jun 22 22:35:34 UTC 2005

On Wed, 2005-06-22 at 17:41 -0400, Jon August wrote:
> I updated the policy after I found that there was a bug with starting  
> DHCP and since then I haven't had any issues getting things to work.   
> Things like a CGI script running sendmail to send an email - which  
> used to show up in the audit log, now work fine.
> What can I do to see if SELinux is still paying attention?

You can run 'ps axZ | grep processname' to see the security context that
a process is running under.  For example,

[root at nexus walters]# ps axZ | grep httpd
root:system_r:httpd_t            2723 ?        Ss     0:00 /usr/sbin/httpd

If you see httpd_t then you can be pretty sure your CGI script is
confined.  The only way it could not be, off the top of my head, is if
you have a script labeled with the type httpd_unconfined_script_exec_t.

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