Lennart Poettering
781fa474d8
If we set O_NONBLOCK on stdin/stdout directly this means the flag is left set when we abort abnormally, as we don't get the chance to reset it again on exit. This might confuse progrms invoking us. Moreover, if programs invoking us continue to write to the stdout passed to us, they might be confused by non-blocking mode too. Hence, let's avoid this if possible: let's reopen stdin/stdout and set O_NONBLOCK only on the reopend fds, leaving the original fds as they are. Prompted-by: https://github.com/systemd/systemd/pull/17070#issuecomment-702304802
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 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.