**Fwd: RE: Samba WINS server killing NMBD process : a trick

[Alder]

COLLOT Jean-Yves wrote:

> Hi.
>
> I understand that rebuilding SAMBA 2.0.6 from scratch is not so easy.
>
> If you are interested in doing something a little tricky, you may be 
> able to check if my hypothesis is good.
> The idea is to run NMBD interactively, and cleverly change the call 
> argument from "True" to "False" by modifying the right instruction 
> directly in the EXE file, just before actually running it.
>
> OK, that's quite easy :
>
If you say so!    :-)

> $ DEFINE DBG$PROCESS NONE
> $ RUN/DEBUG SAMBA_ROOT:[BIN]NMBD
> DBG>SET SCOPE NMBD_WINSSERVER
> DBG>SET RAD HEX
> DBG>E/INST %LINE 36680
>         (Here, you should see :  BIS  R31,#X01,R16)
> DBG>EVAL/ADDR %LINE 36680
>         (Here, you'll have some hexadecimal value, like 
> 0000000000xxxxx. Use it in the following:)
> DBG>DEP 0000000000xxxx = 47FF0410
> DBG>E/INST %LINE 36680
>         (Now, you should have BIS R31,R31,R16)
> DBG>GO
> ....
> DBG>GO
>
> As you see, we have changed the call argument from 1 to 0 (you'll have 
> to believe me when I say that's what we've done...)
>
OK.  I'm game.

> If NMBD works OK now and does not exit, you'll have to find out how to 
> rebuild NMBD from sources in order to make the change permanent...
>  
>
Seems to have exited as before, I'm afraid.


$ RUN/DEBUG SAMBA_ROOT:[BIN]NMBD.EXE_AXP
 
         OpenVMS Alpha Debug64 Version V7.2-019
 
%DEBUG-I-INITIAL, Language: C, Module: NMBD
%DEBUG-I-NOTATMAIN, Type GO to reach MAIN program
 
DBG> SET SCOPE NMBD_WINSSERVER
DBG> SET RAD HEX
DBG> E/INST %LINE 36680
NMBD_WINSSERVER\initiate_wins_processing\%LINE 36680:           BIS
R31,#X01,R16
DBG> EVAL/ADDR %LINE 36680
0000000000043A58
DBG> DEP 0000000000043A58 = 47FF0410
DBG> E/INST %LINE 36680
NMBD_WINSSERVER\initiate_wins_processing\%LINE 36680:           BIS
R31,R31,R16
DBG> GO
break at NMBD\main\%LINE 35732+44
DBG> GO
%DEBUG-I-EXITSTATUS, is '%SYSTEM-S-NORMAL, normal successful completion'
DBG> GO
%DEBUG-E-BADSTARTPC, cannot start from PC 0000000000000000
DBG> GO
%DEBUG-E-BADSTARTPC, cannot start from PC 0000000000000000
DBG>

Merci beaucoup, Jean-Yves.  What do you think?

Alder