systemd: pull in network.service and introduce NetworkManager-wait-online.service

This pulls in network.target from NetworkManager.service (and not the
other way round), as suggested and agreed on on the systemd ML:

http://lists.freedesktop.org/archives/systemd-devel/2011-March/001692.html

This also introduces an auxiliary service
NetworkManager-wait-online.service that can be used to order a unit
after the point where the network is available. When this is enabled
with "systemd enable NetworkManager-wait-online.service" the unit
network.target will be delayed until the network is up, which is
suitable for synchronizing NFS mounts and similar to it.

https://bugzilla.redhat.com/show_bug.cgi?id=692008

.gitignore

@@ -179,6 +179,7 @@ policy/org.freedesktop.network-manager-settings.system.policy
 policy/org.freedesktop.NetworkManager.policy
 
 data/NetworkManager.service
+data/NetworkManager-wait-online.service
 data/org.freedesktop.NetworkManager.service
 
 cli/src/nmcli

data/Makefile.am

@@ -1,10 +1,15 @@
 
 if HAVE_SYSTEMD
-systemdsystemunit_DATA = NetworkManager.service
+systemdsystemunit_DATA = \
+	NetworkManager.service \
+	NetworkManager-wait-online.service
 
 NetworkManager.service: NetworkManager.service.in
 	$(edit) $< >$@
 
+NetworkManager-wait-online.service: NetworkManager-wait-online.service.in
+	$(edit) $< >$@
+
 servicedir = $(datadir)/dbus-1/system-services
 service_in_files = org.freedesktop.NetworkManager.service.in
 service_DATA = $(service_in_files:.service.in=.service)
@@ -14,13 +19,14 @@ $(service_DATA): $(service_in_files) Makefile
 endif
 
 edit = sed \
+	-e 's|@bindir[@]|$(bindir)|g' \
 	-e 's|@sbindir[@]|$(sbindir)|g' \
 	-e 's|@sysconfdir[@]|$(sysconfdir)|g' \
 	-e 's|@localstatedir[@]|$(localstatedir)|g'
 
 EXTRA_DIST = \
 	NetworkManager.service.in \
+	NetworkManager-wait-online.service.in \
 	org.freedesktop.NetworkManager.service.in
 
-CLEANFILES = NetworkManager.service org.freedesktop.NetworkManager.service
-
+CLEANFILES = NetworkManager.service NetworkManager-wait-online.service org.freedesktop.NetworkManager.service

data/NetworkManager-wait-online.service.in

@@ -0,0 +1,12 @@
+[Unit]
+Description=Network Manager Wait Online
+Requires=NetworkManager.service
+Wants=network.target
+Before=network.target
+
+[Service]
+Type=oneshot
+ExecStart=@bindir@/nm-online -q --timeout=30
+
+[Install]
+WantedBy=multi-user.target

data/NetworkManager.service.in

@@ -1,6 +1,8 @@
 [Unit]
 Description=Network Manager
 After=syslog.target
+Wants=network.target
+Before=network.target
 
 [Service]
 Type=dbus
@@ -8,5 +10,5 @@ BusName=org.freedesktop.NetworkManager
 ExecStart=@sbindir@/NetworkManager --no-daemon
 
 [Install]
-WantedBy=network.target multi-user.target
+WantedBy=multi-user.target
 Alias=dbus-org.freedesktop.NetworkManager.service