From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,dea2d62ab1462538 X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news3.google.com!proxad.net!feeder1-2.proxad.net!feeder.erje.net!multikabel.net!newsfeed20.multikabel.net!post1.tilbu1.nb.home.nl!cache3.tilbu1.nb.home.nl!not-for-mail Date: Wed, 13 Jan 2010 19:55:06 +0100 From: Ad Buijsen User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Writing an Operating System in Ada References: <8e9bc311-7540-40a1-b19e-49e93648c25c@s31g2000yqs.googlegroups.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Message-ID: <240c1$4b4e170b$541ada03$25446@cache3.tilbu1.nb.home.nl> X-Complaints-To: abuse.home.news@prolocation.net Organization: @home NNTP-Posting-Host: 84.26.218.3 (84.26.218.3) NNTP-Posting-Date: Wed, 13 Jan 2010 19:55:07 +0100 X-Trace: 240c14b4e170bf1bf7fa625446 Xref: g2news1.google.com comp.lang.ada:8731 Date: 2010-01-13T19:55:06+01:00 List-Id: Leslie wrote: > > If possible, also, it would be nice to get away from the "root > can do anything" paradigm, and its associated inherited > privileges (crash a root-capable process and steal its > privileges). It would be nice to see something more like the > explicit privilege design used by CP in IBM's VM operating > systems. A capability-based OS, like Coyotos, perhaps? The latest version of Genode (announced in this group) supports components programmed in SPARK; this allows a gentle entry to building an OS by piecemeal replacement of servers, and possibly even the microkernel. Ad Buijsen