[Unit]
Description=D-Bus System Message Bus
IgnoreOnIsolate=yes
DefaultDependencies=no
Requires=local-fs.target
After=local-fs.target

[Service]
Type=forking
ExecStartPre=/bin/mkdir -p /var/run/dbus
ExecStart=/sbin/dbus-daemon --system --nopidfile
ExecStartPost=/usr/syno/lib/systemd/scripts/syno-dbus-check.sh system
Slice=syno_dsm_internal.slice

[X-Synology]