套件： umview-mod-viewfs (0.8.2-3)

View-OS in user space - Filesystem mangling modules

View-OS is a novel approach to the process/kernel interface. The semantics of each system call can be assigned process by process giving the user the right to decide which view of the system each process has to join. Each process can "see" a different file system structure, networking resources, processor, devices. Moreover some of the resources can be provided by the user him/herself, thus these resource can be private to the single process and are not known a priori by the system. Groups of processes can share the same view but this is just an optimization to share management methods.

For more information, see http://wiki.virtualsquare.org

UMView is a user-mode implementation of View-OS. Processes are run with a controlling daemon that captures all the system calls (at present using the ptrace() system call) and uses dynamically loadable modules to change their semantic.

This package contains (very experimental) modules that allow filesystem namespace mangling (as hiding some portions of the filesystem, creating COW subtrees and so on).