Re: [nfsv4] FYI: Readdir not allowed on NFS pseudo root

[Jim Rees <[e-mail]>]

  Seems like the server would return an "empty" response for READDIR
  on this special server.

But that would be wrong too.  That would imply the directory is empty.  I
can imagine a client that would get very confused by this.  Suppose, for
example, the client caches directory contents after a successful READDIR,
and uses the cached copy for subsequent lookups.  I think NFS4ERR_ACCESS is
the only acceptable response.

  This also implies that clients must use LOOKUP to traverse the
  server's namespace on things like traditional mount operations that
  a client would do.

Yes.  The client must be prepared for this anyway.  In fact, the client
probably can't tell and doesn't care whether it's in a pseudo-fs or a real
one.

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