Date: Thu, 26 Dec 1996 12:26:52 -0800 From: Julian Elischer <julian@whistle.com> To: Charles Owens <owensc@enc.edu> Cc: J Wunsch <j@uriah.heep.sax.de>, FreeBSD hackers <freebsd-hackers@freebsd.org>, ben@narcissus.ml.org Subject: Re: multi-group file access techniques / directory hardlinks Message-ID: <32C2DF8C.167EB0E7@whistle.com> References: <Pine.FBS.3.93.961226140036.24466D-100000@dingo.its.enc.edu>
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Charles Owens wrote: > 1. The file system does in fact support directory hardlinks. (This is > true at least to some extent, since the '.' and '..' entries are, > in fact, directory hardlinks.) see below. > > 2. Certain key tools do _not_ understand directory hardlinks. The ones > that I know of are fsck, rm, and rmdir. > > 3. The official FreeBSD stance (that I seem to be hearing) that > directory hardlinks are unsupported is based on: > > a. the insufficient status of the tool support (previous point) > - and/or - > b. the fact that directory hardlinks are dangerous in the > hands of the uncareful. > > Am I correct here? Would someone in the know provide clarification? the KERNEL now disallows the 'link' operation on directories. > > As I stated in my original posting (on Dec 18), my goal is to come up with > an optimum technique for allowing multiple groups controlled access to a > file tree. (To my surprise, I had very little response to this posting, > which deals with what I think is a rather interesting challenge. If you'd > like me to repost, please holler). Essentially I'm trying to achieve a > subset of the functionality offered by Access Control Lists as implemented > in AIX et al. I never saw the original posting.
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