On 01/29/16 13:04, J. Lewis Muir wrote:
On 1/29/16 3:54 PM, Till Straumann wrote:
- the code uses these features (RT scheduling + mlockall) *only*
if you give it sufficient privilege to use them. If it has the
privileges then the code assumes you want it to use them.
This is perhaps the real issue: the code assumes it should use
something just because it has sufficient privileges to do so. If I'm
understanding things correctly, if I want to run something as root (or
with certain capabilities) *without* RT, I can't do it. But a toggle
for RT would allow me to do it.
Agree with Lewis that something like this should not be automatic.
Imagine a user (like e.g. a system administrator) with privileges
runs something that includes this and it all works fine. Then somebody
else (e.g. a telescope operator) without the same privileges runs it
and it doesn't. To even trouble shoot what exactly the problem is I'd
have to find a non-privileged account and run it ... turning it on and
off via an option would be much easier (and if it needs it we can
always install it with privilege and the option).
Aloha,
Maren
- References:
- set-user-id root and EPICS 3.15 Gerry Swislow
- RE: set-user-id root and EPICS 3.15 Mark Rivers
- Re: set-user-id root and EPICS 3.15 Ralph Lange
- Re: set-user-id root and EPICS 3.15 Andrew Johnson
- Re: set-user-id root and EPICS 3.15 Till Straumann
- Re: set-user-id root and EPICS 3.15 J. Lewis Muir
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