Re: FMODE_EXEC or alike?

[J. Bruce Fields]

On Tue, Feb 21, 2006 at 08:59:56AM -0500, Trond Myklebust wrote:
> Hmm.... We might possibly want to use that for NFSv4 at some point in
> order to deny write access to the file to other clients while it is in
> use.

So on the NFS client, an open with FMODE_EXEC could be translated into
an NFSv4 open with a deny_write bit (since NFSv4 opens also do windows
share locks).

An NFSv4 server might also be able to translate deny mode writes into
FMODE_EXEC in the case where it was exporting a cluster filesystem.  It
wouldn't completely solve the problem of implementing cluster-coherent
share locks (which also let you deny reads, who knows why), but it seems
like it would address the case most likely to matter.

--b.
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