Following is a small patchset implementing what I was describing about earlier, namely semantics for a hierarchical container naming scheme. What works: 1. ls -l /proc/$$/container shows the full hierarchical name of the container; 2. mount -t containerfs none /container results in a file tree under /container representing the full container hierarchy 3. cd /proc/$$/container; ls results in a listing of child containers What doesn't work: 1. The /proc/$$/container link always appears dead (red in bash on my fedora test system) because it points into a kern_mounted fs. 2. Features like cd /proc/$$/container mv container_3 my_child_container to rename a container or cd /proc/$$/container rm container_3 to kill all processes a container are unimplemented. 3. Semantics for entering a namespace are not only unimplemented, but entirely unconsidered thus far. I suppose one cool way to enter a container would be ln -s /proc/$$/container/child_container /proc/$$/container but that a. Does not provide the ability to switch only some of the namespaces, as Herbert wants. b. May be unimplementable using proc support as is - not sure. thanks, -serge
