[TUHS] Portals in 4.4 BSD
ram at rkrishnan.org
Sun May 1 11:28:56 AEST 2016
On Fri, Apr 29, 2016, at 04:45 PM, Tony Finch wrote:
> Ramakrishnan Muthukrishnan <ram at rkrishnan.org> wrote:
> > I read with a lot of interest, an old Usenix paper by the late Richard
> > Stevens on a system called "Portals": [...]
> > Wondering if this survived in any existing, so called "modern" Unix.
> A descendent of the original code is still present in DragonFlyBSD:
> The facility still exists in NetBSD but it has been reimplemented on top
> of puffs, the Pass-to-Userspace Framework File System development
> It survived in FreeBSD for a long time, but eventually was removed in
> rather than being made multiprocessor-safe.
> It also got removed from OpenBSD in 2011.
Thanks a lot, Tony. Looks like Portal is alive, at least in some of the
BSD variants. I will try these out.
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