samba - May 2014 - Recvfile patch issue with windows.

Hi All,

I have a recvfile patch for samba4.1. This patch is working with linux
client, But if am trying this with windows client am getting following
error in my server.

" Unexpected RPC Fragment size! (0)"

In client side am getting "Remote procedure call failed and did not
execute"
And the samba share not mounted.

So far i tried regedit with Lanman workstation "parameter".
RequireSecuritySignature = 0

and  server side , smb.conf i added,

server signing =disabled
client signing   = disabled.

Also tried in gpedit.msc with windows security setting to disabled client
side.

Using the same patch even i can mount and copy data across samba share in
all linux client. What is the problem with windows

Thanks,
Bglr

On Tue, May 27, 2014 at 04:34:37PM +0530, sp bglr wrote:
> Hi All,
> 
> I have a recvfile patch for samba4.1. This patch is working with linux
We need to know exactly what 'I have a recvfile patch for samba4.1'
means. What patch ? What does it do ?

Hello Bglr,

2014-05-27 19:04 GMT+08:00 sp bglr <spbglr666 at gmail.com>:
> I have a recvfile patch for samba4.1. This patch is working with linux
> client, But if am trying this with windows client am getting following
> error in my server.
>
> " Unexpected RPC Fragment size! (0)"
>
> In client side am getting "Remote procedure call failed and did not
> execute"
>
I saw this symptom once on my linux box,
after applying the attached patch this symptom is resolved,
this attached is came from Metze's more recvfile optimizations.

Client OS is windows 7,
can reproduce this symptom with following sort on my linux box,
1) samba-4.1.7 and custom kernel patch like
    https://lkml.org/lkml/2013/7/23/37
2) max protocol = SMB2
3) min receivefile size = 1

Earlier days wo/ Metze's patch,
found 2 methods to way around this symptom:
A) max protocol = NT1
    Looks like been suffered if with SMB >= 2.0,
    hence use NT1 instead.
B) min receivefile size = 8192
    8192 is going to cover 4280 to avoid recvfile() involved,
    see comment on samba-4.1.7/source3/libsmb/cli_np_tstream.c
    ''Windows uses 4280 (the max xmit/recv size negotiated on
DCERPC)."

Hmm perhaps could try this attached patch, thanks.

--
Regards,
Jones
-------------- next part --------------