Kernel source

[Nicolae Paladi]

Hi,

I am not sure if this is the right place to start, but I am looking for
the source of the following kernel package:

kernel-2.6.32-358.118.1.openstack.el6.x86_64.rpm

This kernel is installed with RDO in order to enable some
OpenStack functionality (I am using CentOS 6.4). However,
I need to rebuild the kernel in order to enable IMA (integrity 
measurement architecture).

I could only find the .rpm package itself, but not the source.

Any help appreciated, thank you!
/Nico