[libvirt] [PATCH 4/4] lxc: store tty pid

This patch will use a file in the lxc configuration directory to store the tty forwarding process pid. The pid is stored after the process is fork()'d. It's loaded during startup when the config for a running container is loaded. The file is deleted when the domain is undefined. This should avoid "losing" the tty pid over a libvirtd restart. -- Best Regards, Dave Leskovec IBM Linux Technology Center Open Virtualization