Sharing dbus between two differnt user

[rameshsagar krishnasagar]

Hi Guys,
I am new to dbus, i am trying to use dbus as IPC in a embedded system
project running in mips 4kec processor

for the testing purpose i have used a sample client server application, the
complete source code, XML, make file are available in the following link.

http://maemo.org/maemo_training_material/maemo4.x/html/maemo_Platform_Development_Chinook/APPENDIX_F_Source_code_for_the_GLibDBus_asynchronous_examples.html

In the embedded system i have 3 users
a)root
b)UserB belongs to the group UserB
c)UserC  belongs to the group UserC

In the embedded system it is a autologin, the S modules in the /etc/enit.d
automatically runs & kicks the embedded application.

S01dbus module launches the dbus-dameon ,it is launched by the root

now i need to launch the server application as UserB & Client application as
UserC

eg.