[Samba] multiple smb commands (some non AndX) in one packet

Jeremy Allison jra at samba.org
Wed Jun 4 19:04:32 GMT 2008

On Wed, Jun 04, 2008 at 08:58:00PM +0200, Volker Lendecke wrote:
> On Wed, Jun 04, 2008 at 11:42:30AM -0700, Jeremy Allison wrote:
> > On Wed, Jun 04, 2008 at 01:36:20PM -0500, Shirish Pargaonkar wrote:
> > > Does samba server handle multiple smb commands (not necessarily andx commands)
> > > within one packet?  If a client were to send commands such as 0x2f, 0x32, 0x32
> > > in one packet instead of three separate packets, does samba server
> > > handle it i.e.
> > > respond to each of the three requests?
> > 
> > Yes, we should do that. Of course there are earlier
> > bugs in the implementation but I believe as of our
> > latest code (3.0.30 and 3.2rc's) we handle this
> > correctly.
> Isn't it that we only have to take special care of the andX
> type requests? For the other ones we should not even notice
> that there are multiple requests in a TCP packet. 0x2f is
> writeX, this might require special handling, but the fact
> that 0x32 (trans2) is followed by something else in the same
> frame shouldn't be noticed by smbd at all.
> Or are you doing something special magic to wrap these into
> the same netbios-level message (no idea how this should
> work...)? :-)

I think he's talking about multiple commands in the
same SMB frame, not TCP frame. At least that's how
I answered him :-). I was assuming the andX commands.


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