1 May
2016
1 May
'16
7:28 a.m.
On Fri, Apr 29, 2016, at 04:45 PM, Tony Finch wrote:
Ramakrishnan Muthukrishnan <ram(a)rkrishnan.org>
wrote:
Thanks a lot, Tony. Looks like Portal is alive, at least in some of the
BSD variants. I will try these out.
--
Ramakrishnan
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:
http://gitweb.dragonflybsd.org/dragonfly.git/tree/HEAD:/sys/vfs/portal
http://gitweb.dragonflybsd.org/dragonfly.git/tree/HEAD:/sbin/mount_portal
The facility still exists in NetBSD but it has been reimplemented on top
of puffs, the Pass-to-Userspace Framework File System development
interface.
http://netbsd.gw.com/cgi-bin/man-cgi?mount_portal
It survived in FreeBSD for a long time, but eventually was removed in
2012
rather than being made multiprocessor-safe.
https://github.com/freebsd/freebsd/commit/efcca33ac515c354e18135425794400ea…
It also got removed from OpenBSD in 2011.
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sbin/mount_portal/Attic/mount_…