42eccfec6e
Fixes #26413: the docs said that the filter prevents writes, but it just a filter at the system call level, and some of those calls are used for writing and reading. This is confusing esp. when a higher level library call like ntp_gettime() is denied. I don't think it's realistic that we'll make the filter smarter in the near future, so let's change the docs to describe the implementation. Also, split out the advice part into a separate paragraph.
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 or join our IRC channel.
Stable branches with backported patches are available in the stable repo.