On Sat, Jan 3, 2009 at 9:04 PM, Roman V. Shaposhnik <r...@sun.com> wrote: > I'm confused. Is there any part of syspipe() that can NOT > be done from userspace? Why does it have to be a syscall? > > P.S. I would also argue that sysdup() would seem to be superfluous > if more feature-rich devdup was available.
I don't believe you can write a race-free implementation of the pipe system call using #|. I also don't believe you can implement the dup system call (remember, it has two arguments) using #d. If you disagree, show me the code. Russ
