to answer your qn having gone thru this in a similar way the easy way is far from being available.If the livelink user DB can be made readonly then truly your users will be prevented from doing it.Note every user transcation that tries to do modify will get a severe error and the users will be none too happy about it.I am not even sure if this is possible since I do not psess dba knowledge.However here are things that we use to do in a similar situation.You could make the EFS readonly that also will error out and confuse the users terribly.
a)We maintain a livelink by cloning our production DB.Then in bold RED LETTERS WE SAY ON THAT.THIS IS A READONLY SYETM AND YOU ARE BY YOURSELF IF YOU MODIFY IT.
b)We temporarily using Object & Usage privileges restrict creation of folders,documents etc.this would mean that they still will be able to modify things that they had access to.
c)Keep all users login disabled and ask them to use a hard coded guest account.They will see thir items but since the guest user does not get to do any revisioning you are going to be safe.Note creation of the guest account means that you have to hardcode the userid/apssword in your URL so security people may not like that.
By far approach A works in 90 % of situations.
Well, if I called the wrong number, why did you answer the phone?
James Thurber, New Yorker cartoon caption, June 5, 1937
Certified OT Developer and probably certfiable,Livelink ECM Champion 2008