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,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,92640d662fc31a03 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-05-09 09:00:55 PST Path: newsfeed.google.com!newsfeed.stanford.edu!canoe.uoregon.edu!logbridge.uoregon.edu!netnews.com!newsfeed2.earthlink.net!newsfeed.earthlink.net!newsmaster1.prod.itd.earthlink.net!newsread1.prod.itd.earthlink.net.POSTED!not-for-mail Newsgroups: comp.lang.ada Subject: Re: howto make system calls (newbie question) From: charleshixson@earthling.net (Charles Hixson) References: <9d6c89$1nd$1@nh.pace.co.uk> <9d87id$oll15@news.kvaerner.com> <9d8ute$8tt9@news.kvaerner.com> Organization: Mandala Fluteworks Message-ID: User-Agent: Xnews/M3 Date: Wed, 09 May 2001 16:00:54 GMT NNTP-Posting-Host: 198.94.156.19 X-Complaints-To: abuse@earthlink.net X-Trace: newsread1.prod.itd.earthlink.net 989424054 198.94.156.19 (Wed, 09 May 2001 09:00:54 PDT) NNTP-Posting-Date: Wed, 09 May 2001 09:00:54 PDT X-Received-Date: Wed, 09 May 2001 08:59:18 PDT (newsmaster1.prod.itd.earthlink.net) Xref: newsfeed.google.com comp.lang.ada:7379 Date: 2001-05-09T16:00:54+00:00 List-Id: Kilgallen@eisner.decus.org.nospam (Larry Kilgallen) wrote in : >In article >, >charleshixson@earthling.net (Charles Hixson) writes: > >... >> Do you mean that all of your users are restricted to batch >> compile/execution cycles? Then slave sysin to the card >> reader and sysout to the line printer (Unit5 and Unit6, I >> think they were called.) > >No, but users of interactive terminals (or emulators thereof) >do not have access to the _console_. There is only one >console on the system. There could be tens or hundreds of >users (depending on the size of the machine). From the >console one can issue hardware commands to stop the machine, >etc. OK. In that case let it be re-stated as a request for access to terminal screen I/O. I believe that this is what was meant. (I know few people who have a separate system console anymore, so that meaning has rather dropped from my vocabulary [of course, I'm not the original poster, so I'm guessing what was meant].) >... >> >> No. But perhaps a higher level description could be. It >> might not have the total functionality of low-level system >> calls, but one often doesn't need that. (I have only used >> VMS twice, so forgive me if I don't know what an ACE is.) > >By ACE I mean "Access Control Entry", the fundamental >building block of an Access Control List. I was under the >impression the same term was used for Unix and Windows. It >is the most common method of complying with the C2 rules of >the Orange Book. While various operating systems have Access >Control Lists for file protection, the parsing rules differ >from one OS to another. Some early Unix implementations came >without ACLs, but I think the need for C2 evaluation cured >that for any serious implementations. > OK. Then perhaps the difference is that I never work with highly secured systems. Perhaps that *is* specialized enough (and different enough from system to system) that a high level specification would be inappropriate. OTOH, if a similar construct is used on VMS, *nix, and Windows, then perhaps a high level description would be appropriate. -- Charles Hixson Copy software legally, the GNU way! Use GNU software, and legally make and share copies of software. See http://www.gnu.org http://www.redhat.com http://www.linux-mandrake.com http://www.calderasystems.com/ http://www.linuxapps.com/