Secure EMC run

[Ray <rehenry-at-up.net>]

Hi

A while back we had a brief discussion on running EMC with a user other
than root.  I'm working on a handbook page that describes that procedure. 
You can review my progress on that page at:

	http://www.linuxcnc.org/handbook/faq/faqemcsafe.html

I wanted to prove the procedure so I set up a Linux group named
operator and an operator named ray. But I couldn't get it to run. (same
messages as below)

So I made an entire EMC install (June 7) as ray, copied over my personal 
run and ini file, and set permissions as Fred indicated in his post
quoted in the url above.  But when I run it, I get the following feedback. 

    [ray-at-localhost emc]$ ./tk.run
    Current platform is linux_2_2_14
    Current real-time platform is rtlinux_2_2
    inivar = plat/linux_2_2_14/bin/inivar
    INIFILE = tk.ini
    starting emc...
    starting freqmod.o...done
    starting minimillio...done
    starting minimilltask...done
    running tkemc...
    open failed: Permission denied
    mbuff_alloc failed.
    emctaskmain.cc 2055: can't initialize IO
    open failed: Permission denied
    emcsh.cc 4079: can't connect to emc
    [ray-at-localhost emc]$

Thinking there was an error in the setup, I ran it as root and it worked
okay.  I noticed that ownership, group, and permissions for the ini and
var files seem to get changed to reflect the current usr - but not always.

Got a clue?

Ray