Date: Fri, 27 Dec 1996 09:34:35 +1000 (EST) From: David Leonard <leonard@dstc.edu.au> To: owensc@enc.edu Cc: hackers@freebsd.org Subject: Re: multi-group file access techniques (repost) Message-ID: <199612262334.JAA07441@foxtail.dstc.edu.au>
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In dstc.mail.freebsd.hackers you write: > .../man_readable_c is a "control directory," a technique that seems [...] > making 'www' the owner of all "choke point" directories: okay, so this technique is emulating ACLs by concatenating the unix permissions on ancestor directories. (correct me if ive got this wrong) > In his article, Doug Morris also speaks of a technique of using hard links > of directories to achieve a similar effect. This technique could be used > in tandem with the above to add more flexibility, but we all know the > GREAT EVIL that hard linked directories are. :-) this could also be done with portalfs or nullfs? hard links can introduce inter-device cycles in the filesystem tree which many program (libraries) rely on the non-existence of. imho introducing ACLs is admitting to complexity :) The really simple solution is having billions of groups and encoding the ACL in them... a perl script should do it :) :) :) -- David Leonard Developer, DSTC The University of Queensland david.leonard@dstc.edu.au http://www.dstc.edu.au/~leonard/ "What is contemplation but laxative for the mind?" - T.A.Casady (?)
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