title: How to provide an already running process with Kerberos and AFS ticket?
body: <p>I have a Linux server using Kerberos for user authentication, and AFS for user homes. When I log into the machine with a forwardable Kerberos ticket, (I suppose) PAM takes care of my AFS authentication too, so I automatically get access to my AFS home after login.</p>
  
  <p>Let's say I log in, and I create a screen session and start an application in it. Then I detach my screen session, and log out from the machine. My Kerberos ticket gets dropped automatically, so my screen session running in the background and the application running in it doesn't have access to my AFS home anymore. This is normal, and it's good as it is.</p>
  
  <p>Next time when I log into the machine, how can I "provide" my already running screen session and the application running in it (the processes themselves) with a new Kerberos ticket and make it able to access my AFS home again without having to restart it?</p>