Long description

There is a rectangular block with two partitions. The first partition is labeled Userspace and the second partition is labeled Kernel Space. The first partition has three circles labeled A, B, and C. The circle is marked Process whereas A is marked Owner. The second partition has three square blocks placed from top to bottom with forwarding arrows pointing to further three rectangular blocks placed from top to bottom. The hierarchy is File forward arrow F1 forward arrow A: R W; B: R. F2 forward arrow A: R; B R W; C: R. This second rectangular block is labeled A C L. F3 forward arrow B: R W X; C: R X.