Open Stack

Hi, I'd like you to take a look at this patch for potential
SecurityImpact.
https://review.openstack.org/200621

Log:
commit 15dc8c9145262afada5410afae4e55b8a39dd6b2
Author: abhishekkekane <abhishek.kekane at nttdata.com>
Date:   Tue Mar 31 05:24:47 2015 -0700

    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 method to execute call which will store the pid of
    scp/rsync process in cache as a key: value pair which 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
    
    Co-authored-by: Nikola Đipanov <ndipanov at redhat.com>
    Closes-bug: #1387543
    Change-Id: Ia0302ec43f96512c2e51a307c3091a2cee066610