logind: add infrastructure to keep track of machines, and move to slices

- This changes all logind cgroup objects to use slice objects rather
  than fixed croup locations.

- logind can now collect minimal information about running
  VMs/containers. As fixed cgroup locations can no longer be used we
  need an entity that keeps track of machine cgroups in whatever slice
  they might be located. Since logind already keeps track of users,
  sessions and seats this is a trivial addition.

- nspawn will now register with logind and pass various bits of metadata
  along. A new option "--slice=" has been added to place the container
  in a specific slice.

- loginctl gained commands to list, introspect and terminate machines.

- user.slice and machine.slice will now be pulled in by logind.service,
  since only logind.service requires this slice.

1 files changed, 16 insertions, 3 deletions

diff --git a/TODO b/TODO
index dfcd6747f4..f0af723d08 100644
--- a/TODO
+++ b/TODO
@@ -28,20 +28,33 @@ Fedora 19:
 
 Features:
 
+* move systemctl dump to systemd-analyze
+
+* libsystemd-logind: sd_session_is_active() and friends: verify
+  validity of session name before appending it to a path
+
+* logind: when a PAM client calls ReleaseSession() start a timeout and
+  kill the session entirely after that is reached.
+
+* gparted needs to disable auto-activation of mount units somehow, or
+  maybe we should stop doing auto-activiation of this after boot
+  entirely. https://bugzilla.gnome.org/show_bug.cgi?id=701676
+
 * when a service changes state make reflect that in the
   RUNNING/LISTENING states of its socket
 
 * slices:
-  - fix libsystemd-login to handle slices properly
   - add option to pam_systemd to move login session into a slice
-  - add call to logind's dbus intrface to register a machine (also, calls for listing them)
+  - remove ControlGroup= setting
+  - in sd_pid_get_owner_uid() fallback to query session file
+  - add api to determine slice of unit
 
 * when recursively showing the cgroup hierarchy, optionally also show
   the hierarchies of child processes
 
 * document logic of auto/noauto and fail/nofail in fstab in systemd.mount or systemd-fstab-generator man page
 
-* we should properly escape hostnames we add into dbus server strings
+* we should properly escape ssh hostnames we add into dbus server strings
 
 * something pulls in pcre as so dep into our daemons such as hostnamed.