> On Fri, Dec 17, 2021 at 5:07 PM <[email protected]> wrote:
> >
> > From: Trond Myklebust <[email protected]>
> >
> > According to RFC1813: "If count is 0, the WRITE will succeed and
> > return a count of 0, barring errors due to permissions checking."
>
> Yes, I'm surprised we're not already doing this right.
>
> I wonder how far back this bug goes.
>
> The svc.c code is from 8154ef2776aa "NFSD: Clean up legacy NFS WRITE
> argument XDR decoders", but the behavior might predate that code. The
> nfsd_vfs_write() logic, I'm not sure I understand.
>
> We have a pynfs test for the v4 case (WRT4), but I guess we must have nothing
> testing the v3 case.
Hmm, need to try and remember this... I am slowly working on pnfs V3 test cases so I will try and make sure edge cases like this get tested.
Frank