Open Stack

Hi, I'd like you to take a look at this patch for potential
SecurityImpact.
https://review.openstack.org/192986

Log:
commit 82a088e804062f66138ead3c87b4ab029d08efa4
Author: Rajesh Tailor <rajesh.tailor at nttdata.com>
Date:   Tue Mar 31 05:24:47 2015 -0700

    libvirt: Kill rsync/scp processes before deleting instance
    
    In the resize operation, during copying files from source to
    destination compute node scp/rsync processes are not aborted after
    the instance is deleted because linux kernel doesn't delete instance
    files physically until all processes using the file handle is closed
    completely. Hence rsync/scp process keeps on running until it
    transfers 100% of file data.
    
    Added callback methods to execute call which will store the pid of
    scp/rsync process in memorycache as a key: value pair and to remove the
    pid from the cache after process completion. Process id will be used to
    kill the process if it is running while deleting the instance. Instance
    uuid is used as a key in the cache and pid will be the value.
    
    SecurityImpact
    
    Closes-bug: #1387543
    Change-Id: Ie03acc00a7c904aec13c90ae6a53938d08e5e0c9