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proot provides userspace-powered emulation of chroot and mount --bind, lending it to be used on environments without unprivileged user namespaces, or in otherwise restricted environments like Android. In order to achieve this, proot makes use of the kernel's ptrace() facility, which we can use in order to detect its presence. Since it doesn't use any kind of namespacing, including PID namespacing, we don't need to do any tricks when trying to get the tracer's metadata. For our purposes, proot is listed as a "container", since we mostly use this also as the bucket for non-container-but-container-like technologies like WSL. As such, it seems like a good fit for this section as well.
System and Service Manager
Details
General information about systemd can be found in the systemd Wiki.
Information about build requirements is provided in the README file.
Consult our NEWS file for information about what's new in the most recent systemd versions.
Please see the Hacking guide for information on how to hack on systemd and test your modifications.
Please see our Contribution Guidelines for more information about filing GitHub Issues and posting GitHub Pull Requests.
When preparing patches for systemd, please follow our Coding Style Guidelines.
If you are looking for support, please contact our mailing list or join our IRC channel.
Stable branches with backported patches are available in the stable repo.