Hi,

> > pipe(2) is defined to be one-way. socketpair(2) creates a two-way
> > pipe.

...

> For that matter, I can't help wondering how many programs would care if
> pipe() returned a bidirectional pipe.  Portable code couldn't rely on
> it, obviously, but portable code is unlikely to do anything that cares
> whether the pipe is bidirectional or not.

Hmm, just looked at the man page on solaris and that says, among other
points, under the heading NOTES:

Since a pipe is bi-directional, there are two separate flows of data.

Just another data point.

Ciao,
Wolfgang
-- 
ws@TooLs.DE     (Wolfgang Solfrank, TooLs GmbH) 	+49-228-985800