The mechanism seems similar to PRoot ( http://proot.me/ http://proot.me/ ) which uses ptrace to intercept filesystem operations to create a userspace chroot. I

The mechanism seems similar to PRoot ( http://proot.me/ http://proot.me/ ) which uses ptrace to intercept filesystem operations to create a userspace chroot. I wonder if there's value in creating a library for intercepting filesystem operations via ptrace...