On Thu, Jan 9, 2025 at 4:46 PM Umut Tezduyar Lindskog <Umut.Tezduyar@xxxxxxxx> wrote:
Hi,
I build a minimum image with mkosi with just systemd, udev as the packages and set the default target to basic.target. It works fine but I cannot shut down the system with systemctl. It complains that dbus is not available.
AFAIK, systemd implements it’s own dbus server to serve systemctl until the dbus daemon / broker starts up. Is this a regression or has something changed about the logic?
It uses a peer-to-peer dbus socket – i.e. not so much a 'dbus server' but a direct unix socket that happens to speak the dbus protocol. This is placed at /run/systemd/private and is restricted to root only (it doesn't support polkit-based authorization). Systemctl's bus_connect_transport_systemd() won't even try connecting to it when running as a different user than root.
Mantas Mikulėnas
