QEMU's stdio chardev sets O_NONBLOCK on both stdin and stdout (see chardev/char-stdio.c [1] and chardev/char-fd.c [2]). Since forked processes share file descriptions, and on a terminal all three stdio fds typically reference the same file description, this affects our own stdio too. Avoid this by using a PTY with chardev serial instead of chardev stdio for native console mode, matching the approach already used for interactive and read-only modes. The PTY forwarder shovels bytes transparently between our stdio and QEMU's PTY using the new PTY_FORWARD_DUMB_TERMINAL and PTY_FORWARD_TRANSPARENT flags, which disable terminal decoration (background tinting, window title, OSC context) and escape sequence handling (Ctrl-] exit, hotkeys) respectively. The chardev is configured with mux=on so the QEMU monitor remains accessible via Ctrl-a c. Also dedup CONSOLE_NATIVE, CONSOLE_READ_ONLY, and CONSOLE_INTERACTIVE handling by using fallthrough, with the only differences being the ptyfwd flags, mux setting, and monitor section. [1] https://gitlab.com/qemu-project/qemu/-/blob/master/chardev/char-stdio.c [2] https://gitlab.com/qemu-project/qemu/-/blob/master/chardev/char-fd.c Co-developed-by: Claude Opus 4.6 <noreply@anthropic.com>
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.
We have a security bug bounty program sponsored by the Sovereign Tech Fund hosted on YesWeHack
Repositories with distribution packages built from git main are available on OBS, and also repositories with packages built from the latest stable release
