this post was submitted on 15 Apr 2024
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    And then you get hooked on it and start using it for real (sh.itjust.works)
    submitted 8 months ago by [email protected] to c/[email protected]
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    [–] [email protected] 1 points 8 months ago (1 children)

    Yeah, that should work too... but you don't get to see any of your local files...

    [–] PoolloverNathan 2 points 7 months ago* (last edited 7 months ago)

    Made a Nix library for this. For a simple setup you can just build this (untested) and run the result:

    import ./encase.nix {
  name = "firefox";
  rw.home.nathan = /home/nathan/home-for/firefox;
  # other dependencies it might need...
  tmp = /tmp; # fresh tmpfs for this sandbox
  network = true;
  command = pkgs.firefox;
}

    It doesn't have user isolation yet, so if it escapes the browser and the chroot (which doesn't have a /proc unless you set proc = /proc;, and runs in a PID namespace either way) your files are still at risk. However, this is still pretty secure, and you can run the script itself as a different user (it creates a new UID namespace so chrooting can be done without root).