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2749f0a3af
Running dbus as an unprivileged user fails for two reasons: Cannot write pid file
and cannot read the installed policies:
Tue Aug 5 17:12:41 2025 daemon.info dbus-daemon[8568]: jail: exec-ing /usr/bin/dbus-daemon
Tue Aug 5 17:12:41 2025 daemon.info dbus-daemon[8585]: Encountered error 'Failed to open "/etc/dbus-1/system.d/org.freedesktop.ModemManager1.conf": Permission denied' while parsing '/etc/dbus-1/system.d/org.freedesktop.ModemManager1.conf'
Tue Aug 5 17:12:41 2025 daemon.err dbus-daemon[8568]: dbus-daemon[8585]: Encountered error 'Failed to open "/etc/dbus-1/system.d/org.freedesktop.ModemManager1.conf": Permission denied' while parsing '/etc/dbus-1/system.d/org.freedesktop.ModemManager1.conf'
Tue Aug 5 17:12:41 2025 daemon.warn dbus-daemon[8585]: Failed to start message bus: Failed to open "/var/run/dbus.pid": Permission denied
Tue Aug 5 17:12:41 2025 daemon.err dbus-daemon[8568]: dbus-daemon[8585]: Failed to start message bus: Failed to open "/var/run/dbus.pid": Permission denied
Tue Aug 5 17:12:41 2025 daemon.info dbus-daemon[8568]: jail: jail (8585) exited with exit: 1
Fix by dropping the pid file when running unprivileged and changing the owner
of the installed policies.
Fixes: f238d6dd09 ("dbus: run as regular user rather than as root")
Signed-off-by: Bjørn Mork <bjorn@mork.no>