large writes and reads ...

[Jeremy Allison]

On Fri, Oct 15, 2004 at 11:30:54AM -0700, Richard Sharpe wrote:
> Hi,
> 
> Well, it seems that both reply_read_and_X and reply_write_and_X in
> smbd/reply.c for the current Samba 3 code ignores large reads and writes.
> 
> That is, they both ignore the Max Count High field for reads and the Data
> Length High field for writes if the WCT is not 14 for each of these.
> 
> Indeed, reply_read_and_X ignores the Max Count High field altogether, as
> all it does is:
> 
>         size_t smb_maxcnt = SVAL(inbuf,smb_vwv5);
> 
> and does not add in the high field under any circumstances, even though
> Samba claims to support Large Read&X in the capabilities field of the
> NegProt response.
> 
> The code in reply_write_and_X only pays attention to the Lenght High Field
> if the WCT is 14, which seems just wrong ...

Are you sure ? There were some bugs in the spec here. Don't go by what
the spec says, test it in the Samba4 test suite against W2K3 first...

Jeremy.