2 - mounts might take time, need to be executed asynchronously in a forked process?
4 - need gc for active jobs that nothing cares for
6 - need gc for units that are not referenced anymore
8 - refreshing of units (i.e. reload config files)
18 - hookup with battery status, suspend/resume
20 - add a job mode which shuts everything down but what is requested
22 - implement priv dropping
24 - allow to disable priv dropping for hook scripts from fragment
30 - create session/pgroup for child processes? handle input on console properly? interactive fsck? interactive luks password?
34 - templating/instances
36 - verify fragment data after loading: refuse cycles on yourself, service units contradicting, more than one Start executable, ...
38 - automatically delete stale unix sockets
40 - .socket needs to be notified not only by .service state changes, but also unsuccessful start jobs
42 - we probably cannot use glibc's syslog() for logging, since it
43 presumably uses the logging socket in blocking mode which might
44 trigger a deadlock if syslog does not process the socket anymore
45 (maybe because it is restarted) and the socket buffer is full.
47 - in udev/mount if properties change we need to delete the old
48 settings and install the new settings. Deleting the old settings is
51 - ability to kill services? i.e. in contrast to stopping them, go directly
54 - restart-on-success, restart-on-failure, restart-on-abort
56 - port over to LISTEN_FDS/LISTEN_PID:
60 - rpcbind (/var/run/rpcbind.sock!)
67 - libvirtd (/var/run/libvirt/libvirt-sock-ro)
68 - bluetoothd (/var/run/sdp! @/org/bluez/audio!)
69 - avahi-daemon (/var/run/avahi-daemon/socket)
72 - teach dbus to talk to systemd when autospawning services
74 - unix sockets chown()/chgrp()