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-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,bc1361a952ec75ca X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-08-28 04:07:51 PST Path: archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!news.tele.dk!small.news.tele.dk!148.122.208.68!news2.oke.nextra.no!nextra.com!news1.oke.nextra.no.POSTED!not-for-mail Sender: ohk@daf.clustra.com Newsgroups: comp.lang.ada Subject: Re: Progress on AdaOS References: <9IFe7.12813$6R6.1221214@news1.cableinet.net> <9lghqu$ac6$1@nh.pace.co.uk> <3B7C3293.76F49097@home.com> <9lhefg$lgd$1@nh.pace.co.uk> <3B7D47F1.25D6FC78@boeing.com> <5ee5b646.0108171856.18631c4c@posting.google.com> <3B7F624B.7294D24F@acm.org> <9lr6je$5hj$1@nh.pace.co.uk> <9ltoi7$4is$1@nh.pace.co.uk> <3B82789B.8D195045@home.com> <9ltuo8$70n$1@nh.pace.co.uk> <3B829450.879B0396@home.com> <9mdh4e$q3v$1@nh.pace.co.uk> From: Ole-Hjalmar Kristensen Message-ID: User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/20.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii NNTP-Posting-Host: 194.143.59.98 X-Complaints-To: news-abuse@nextra.no NNTP-Posting-Date: Tue, 28 Aug 2001 13:06:50 MET DST Organization: Nextra Public Access X-Trace: readme.online.no 998996810 194.143.59.98 Date: 28 Aug 2001 13:07:39 +0200 Xref: archiver1.google.com comp.lang.ada:12507 Date: 2001-08-28T13:07:39+02:00 List-Id: "Marin David Condic" writes: > Well, in an imaginary OS written in Ada, it would be interesting to develop > a unique file system as well. One thing to keep in mind is that the file > system is essentially independent of the core operating system. You could > build the OS in such a way that it could access Unix, VMS, Windows, Mac, > and/or its own file system so long as it knew what it was looking at. There > would be advantages to a file system (like what is on the Mac) that contains > more than just some raw bytes of data - but you give something up at the > same time. Its harder to treat files like that as just raw data. (IIRC, the > advice we once got from DEC on trying to duplicate the "copy" command > programatically was to not bother trying to do that. It was just too hard to > account for everything that "copy" had to do to deal with all the variety of > file types.) > > MDC > -- > Marin David Condic > Senior Software Engineer > Pace Micro Technology Americas www.pacemicro.com > Enabling the digital revolution > e-Mail: marin.condic@pacemicro.com > Web: http://www.mcondic.com/ The Plan 9 operating system could be a good place to start if you wanted to get ideas for a novel file system and OS. > > > "Larry Kilgallen" wrote in message > news:uBW9YP9YCoMO@eisner.encompasserve.org... > > > > Matching the strongly typed tradition of Ada, I think an operating > > system should have strongly typed files, as discussed in: > > > > http://arstechnica.com/reviews/01q3/metadata/metadata-1.html > > > > For those who have better things to do that follow links, it discusses > > file metadata and overloading, and particularly whether the datatype > > for files is a first class element of metadata or is overloaded onto > > the filename. Naturally the datatype of a file is not Integer vs. > > Float, but something like Photoshop Project File vs. Marin's Rocket > > Results. > > -- Kabelsalat ist gesund. Ole-Hj. Kristensen