Re: linux nfs client problem

Trond Myklebust (trond.myklebust@fys.uio.no)
30 Nov 1999 21:50:06 +0100


>>>>> " " == Alan Cox <alan@redhat.com> writes:

>> > then this will fail on more than one NFS implementation.
>> Said nfs CLIENT implementations are broken. By design, the
>> UNIX file system checks file access permissions with OPEN, not
>> WRITE.

> NFS is not posix compliant.

For the record: NFSv3 does in fact fix this. It implements an
access()-style call that is supposed to be used to check access on
open.

>> In order to implement this over NFS, client WRITE operations
>> must use the credentials from OPEN not not the credentials the
>> process has at the time of WRITE.

> That would be a good idea. Its certainly on the list of things
> wrong with the old NFS client code. I'm not sure what the
> status on this is.

It's on its way. I'd still like to finish cleaning up the RPC call
interface.

Cheers,
Trond

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