Date: Thu, 12 Apr 2001 19:10:38 +0200 From: Martin Blapp <mb@imp.ch> To: Thomas Quinot <quinot@inf.enst.fr> Cc: current@freebsd.org Subject: Re: NFS export to netgroup with duplicate hosts Message-ID: <Pine.SGI.4.10.10104121836360.3093471-100000@harem.imp.ch> In-Reply-To: <20010412182900.B30764@cuivre.fr.eu.org>
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> If we manage it, mountd should soon be able to allow different mount flags
> for each path you export in /etc/exports.
I'm sorry. But now after some investigations and talks with Robert
Watson it seems to be clear that this is not possible due the way nfs
works.
It would be easy to fix mountd, and to store somewhere the path where
the export is tied to, but how should nfsd handle this ? He get's a
request for a inode (the namei translation is done on the client side).
The server has now to look which flag set belongs the inode. How can he
see which set of flags belongs to that inode ?
man share_nfs on solaris 7:
Unlike previous implementations of share_nfs(1M), access
checking for the window=, rw, ro, rw=, and ro= options is
done per NFS request, instead of per mount request.
In suns implementation of nfs is written (man share)
If share commands are invoked multiple times on the same
filesystem, the last share invocation supersedes the
previous-the options set by the last share command replace
the old options. For example, if read-write permission was
given to usera on /somefs, then to give read-write permis-
sion also to userb on /somefs:
That means that it's not possible as I get it. I'll do further
investigations to be sure how it works on Solaris exactly.
Martin
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