read/write delegation, share deny

[J. Bruce Fields]

On Fri, Aug 10, 2007 at 04:37:41PM -0400, Trond Myklebust wrote:
> Neither the POSIX spec nor the Single Unix Spec. allow for the concept
> of deny shares: in general, UNIX systems consider mandatory locks to be
> a nuisance at best, and a security problem at worst (imagine allowing
> someone to set a DENY_READ on /etc/passwd for instance).

with the exception of exec/ETXTBSY?

--b.