Daan De Meyer
273c6bc045
The kernel prevents you from open_tree()'ing an open_tree() fd unless it was created from the caller's mount namespace. For various use cases, we want to be able to open_tree() arbitrary mount file descriptors. Turns out there's a way go get around it by mounting the mount file descriptor in a throw-away mount namespace and then open_tree()'ing the mount file descriptor. Let's implement this as a new helper mount_fd_clone() and add a test for it. Because move_mount()'ing the original fd makes it pretty useless as it can't be move_mount()'ed again, we optionally make a second clone which can replace the original fd so it can be cloned again later.
System and Service Manager
Details
Most documentation is available on systemd's web site.
Assorted, older, 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 Code Map for information about this repository's layout and content.
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, join our IRC channel #systemd on libera.chat or Matrix channel
Stable branches with backported patches are available in the stable repo.
We have a security bug bounty program sponsored by the Sovereign Tech Fund hosted on YesWeHack
Repositories with distribution packages built from git main are available on OBS