Date: Wed, 08 Jul 1998 10:13:17 -0400 From: Dan Janowski <danj@3skel.com> To: Terry Lambert <tlambert@primenet.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: permission confusion at mount points (and NFS) Message-ID: <35A37E7C.7CF9404F@3skel.com> References: <199807031017.DAA15756@usr04.primenet.com>
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Terry Lambert wrote: > I personally think that the idea of mapping a vnode into an existing > directory hierarchy should *not* require acess to the existing > hierarchy to implement. > > My idea is that you seperate the act of mapping from the act of lookup; > this is a little inconvenience, in that you ignopre the mapping point > in favor of that which is mapped. It has the advantage that "X" replaces > "Y" instead of "X" predicates "Y". In more simple terms, it means that > the mounted FS permissions are checked instead of the mount point > permissions before acces is granted. > > This is really an issue of data hiding more than anything else, since > it has to do with when permissions are evaluated. > The last time I checked, this limitation is amplified in NFS. A filesystem mount point that is under an imported NFS mount will not show the contents. IRIX allows access to mount points in directories within an NFS mount. Has there been any consideration given to changing this behavior? Dan -- danj@3skel.com Dan Janowski Triskelion Systems, Inc. Bronx, NY To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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