Lars Ellenberg
b8e25bff38
We may want to propagate O_APPEND, or (try to) keep the current file position, even if we use fd_reopen() to re-initialize (and "unshare") other file description status. For now, used only with --pty to keep/propagate O_APPEND (and/or) position if set on stdin/stdout. If we re-open stdout and "drop" the O_APPEND, we get rather "unexpected" behavior, for example with repeated "systemd-run --pty >> some-log". If someone carefully pre-positioned the passed in original file descriptors, we avoid surprises if we do not reset file postition to zero. fcntl F_GETFL first, and propagate O_APPEND if present in the existing flags. Then use lseek to propagate the file position.
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.