bf3b0d5f29
'systemctl unmask foo' will try to remove the symlink to /dev/null under /etc/. But the unit may also be masked by a symlink under /run/generator, in particular the one created by systemd-debug-generator based on systemd.mask=foo on the kernel commandline. The unmask call cannot anything about this: even if it removed the symlink from /run/generator, it'll be recreated on the next daemon-reload. Thus, we can only warn about it. Initially, I wanted to check if 'systemctl.mask' is defined on the kernel command-line, but that's not effective, because such mask symlinks can be created by other generators based on other conditions. Checking for runtime mask is "dumber", but is more robust because it doesn't assume who created the mask and why. The handling of InstallInfo is the copied from install_info_symlink_wants(). It's pretty ugly, this whole code should be rewritten from scratch. The message is printed, but the whole operation is still "successful". This keep backwards compatibility: people might call unmask to remove filesystem masks even if there's still a cmdline param in place. We allow 'systemctl mask' to create such a mask, so 'unmask' should be able to remove it. Fixes #22689.
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.