# ruby unshare (runshare) This tool allows to unshare Linux namespaces. The implementation is similar to the unshare(1) tool. ## Installation Add this line to your application's Gemfile: ```ruby gem 'runshare' ``` And then execute: $ bundle Or install it yourself as: $ gem install runshare ## Usage > require "runshare" > RUnshare::unshare For example: cat > test.rb require "runshare" pid = RUnshare::unshare( :clone_newpid => true, :clone_newns => true, :clone_newcgroup => true, :clone_newipc => true, :clone_newuts => true, :clone_newnet => true, :clone_newtime => true, :fork => true, :mount_proc => "/proc", # docker export $(docker create hello-world) | tar -xf - -C rootfs :root => "/tmp/rootfs" ) if pid == 0 # child puts "--- #{Process.pid}" if system("/hello") != true raise "bad" end puts "--- done" else # parent puts "-- unshare=#{pid}, pid=#{Process.pid}" puts "-- exit=#{Process.waitpid(pid)}" end ^D sudo ruby -I ./lib ./test.rb ## Quick start $ rake compile && echo 'require "runshare"; RUnshare::unshare(:clone_newuts => true)' | irb install -c tmp/x86_64-linux/runshare/2.4.10/runshare.so lib/runshare/runshare.so cp tmp/x86_64-linux/runshare/2.4.10/runshare.so tmp/x86_64-linux/stage/lib/runshare/runshare.so Switch to inspect mode. require "runshare"; RUnshare::unshare ## Ruby <2.5 If your app is single threaded and you are observing: eval:1: warning: pthread_create failed for timer: Invalid argument, scheduling broken Just ignore it with some degree of bravity. You also can silence it by setting: $VERBOSE = nil ## Development After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment. To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org). ## Contributing Bug reports and pull requests are welcome on GitHub at https://github.com/sitano/runshare. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct. ## License The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).