Lennart Poettering
2d3a5a73e0
In -U mode we might need to re-chown() all files and directories to match the UID shift we want for the image. That's problematic on fat partitions, such as the ESP (and which is generated by mkosi's --bootable switch), because fat of course knows no UID/GID file ownership natively. With this change we take benefit of the uid= and gid= mount options FAT knows: instead of chown()ing all files and directories we can just specify the right UID/GID to use at mount time. This beefs up the image dissection logic in two ways: 1. First of all support for mounting relevant file systems with uid=/gid= is added: when a UID is specified during mount it is used for all applicable file systems. 2. Secondly, two new mount flags are added: DISSECT_IMAGE_MOUNT_ROOT_ONLY and DISSECT_IMAGE_MOUNT_NON_ROOT_ONLY. If one is specified the mount routine will either only mount the root partition of an image, or all partitions except the root partition. This is used by nspawn: first the root partition is mounted, so that we can determine the UID shift in use so far, based on ownership of the image's root directory. Then, we mount the remaining partitions in a second go, this time with the right UID/GID information.
systemd - System and Service Manager
Details
General information about systemd can be found in the systemd Wiki.
Information about build requirements are 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 file for information 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.