David Laight <david@l8s.co.uk> writes:
> Why not 1777 - so that the (lock) files can only be deleted by the
> owning user?

To prevent DoS attacks by randoms among other things. Normal users
should not be able to just claim locks on everything -- only
privileged programs should be allowed to do that.

--
Perry E. Metzger		perry@wasabisystems.com
--
NetBSD Development, Support & CDs. http://www.wasabisystems.com/