Commits
Konstantin Khlebnikov authored and Alexey Dobriyan committed f024f0d3b8c
Add pid ns flags PID_NS_HIDE_CHILD and PID_NS_HIDDEN If pid ns created in ns with PID_NS_HIDE_CHILD flag first process (like init) will be added to parent ns, then flag PID_NS_HIDDEN set on new child ns and all following process will be hidden. Hidden processes have their pids allocated in all parent ns, but they aren't added to hash.