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Article #1052Re: 68000 Memory Managment (Bechtolsheim patent) (SUID Patent)
From: Mark Campbell
Date: Mon, 22 Sep 1986 12:03
Date: Mon, 22 Sep 1986 12:03
17 lines
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1537 bytes
Ritchie's SUID parent is numbered 4,135,240 and was dated January 16, 1979. Protection of data file contents. Abstract: An improved arrangment for controlling access to data files by computer users. Access permission bits are used in the prior art to separately indicate permissions for the file owner and nonowners to read, write and execute the file contents. An additional access control bit is added to each executable file. When this bit is set to one, the identification of the current user is changed to that of the owner of the executable file. THe program in the executable file then has access to all data files woned by the same owner. This change is temporary, the proper identification being restored when the program is terminated. -- Mark Campbell Phone: (803)-791-6697 E-Mail: !ncsu!ncrcae!sauron!campbell
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!lll-crg!nike!sri-spam!parcvax!hplabs!hp-sdd!ncr-sd!ncrcae!sauron!campbell From: campbell@sauron.UUCP (Mark Campbell) Newsgroups: net.micro.68k,net.arch Subject: Re: 68000 Memory Managment (Bechtolsheim patent) (SUID Patent) Message-ID: <727@sauron.UUCP> Date: Mon, 22-Sep-86 08:03:17 EDT Article-I.D.: sauron.727 Posted: Mon Sep 22 08:03:17 1986 Date-Received: Tue, 23-Sep-86 23:06:23 EDT References: <508@elmgate.UUCP> <64@mit-prep.ARPA> Reply-To: campbell@sauron.UUCP (Mark Campbell) Organization: NCR Corp., Advanced System Development, Columbia, SC Lines: 17 Keywords: (SUID Patent)