Namespace

Simple c program for using Linux user Namespaces (no root required).

Unpack Runtime for demo container (fedora 30) (File runtime-build.tar).

Compile:

make

Usage:

Usage: nstest [location] [bool share_dev] [bool share_tmp] [bool share_IPC] [bool share_network] command [argument]

Example:

./nstest Runtime/ 1 1 1 1 /bin/bash

Now you are root inside container and can use yum to install programs…

To connect to existing namespace, while nstest is running, from other terminal run:

a=$(pidof nstest);for pid in $a; do ./enterns /proc/$pid/ns/user /proc/$pid/ns/pid /proc/$pid/ns/uts /proc/$pid/ns/mnt /bin/bash; done

TODO

Allow specifying other folders to mount on container.

Container must have certain empty folders, check nstest code.

Improve error handling on mount failure (print error messages).