On Mon, Jul 08, 2002 at 02:07:38PM +0100, Simon Shapiro wrote:
> -------------------
> > On Mon 08 Jul 2002 at 10:11:37 +0900, Curt Sampson wrote:
> > That is true. But it could be implemented entirely in userland, I
> > suspect. So the kernel could be a bit smaller. shmat(2) and shmdt(2)
> > could be done in libc witm mmap, shmget(2) would create a file, if
> > necessary, and shmctl(2) would stat(2), unlink(2) or chmod(2) it.
> 
> There are performance and security issues with userland 
> implementations.

Not to mention the kernel interface must be kept for use by emulations.
-- 
Kevin P. Neal                                http://www.pobox.com/~kpn/
           On the community of supercomputer fans:
"But what we lack in size we make up for in eccentricity." 
  from Steve Gombosi, comp.sys.super, 31 Jul 2000 11:22:43 -0600