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12 Commits

Author SHA1 Message Date
Tom Gundersen
3a67e927e3 networkd-wait-online: improve interoptability and enable by default
To make sure we don't delay boot on systems where (some) network links are managed by someone else
we don't block if something else has successfully brought up a link.

We will still block until all links we are aware of that are  managed by networkd have been
configured, but if no such links exist, and someone else have configured a link sufficiently
that it has a carrier, it may be that the link is ready so we should no longer block.

Note that in all likelyhood the link is not ready (no addresses/routes configured),
so whatever network managment daemon configured it should provide a similar wait-online
service to block network-online.target until it is ready.

The aim is to block as long as we know networking is not fully configured, but no longer. This
will allow systemd-networkd-wait-online.service to be enabled on any system, even if we don't
know whether networkd is the main/only network manager.

Even in the case networking is fully configured by networkd, the default behavior may not be
sufficient: if two links need to be configured, but the first is fully configured before the
second one appears we will assume the network is up. To work around that, we allow specifying
specific devices to wait for before considering the network up.

This unit is enabled by default, just like systemd-networkd, but will only be pulled in if
anyone pulls in network-online.target.
2014-04-24 00:23:07 +02:00
Tom Gundersen
a555350d47 networkd: order after udev kernel socket
Otherwise we will not be able to queuery whether devices are initialized on kdbus enabled systems.
2014-04-19 22:13:49 +02:00
Tom Gundersen
6c7c89dfc6 networkd: add CapabilityBoundingSet 2014-03-24 17:13:24 +01:00
Lennart Poettering
48791a98be units: networkd shouldn't have PrivateTmp= set, since it runs in early-boot
/tmp is only available in later boot, and we shouldn't create private
subdirs in it hence, while we are still in early boot.
2014-03-24 16:48:39 +01:00
Lennart Poettering
f21a71a907 core: enable PrivateNetwork= for a number of our long running services where this is useful 2014-03-19 23:25:28 +01:00
Jason A. Donenfeld
c4a0b20c7a install: do not statically enable systemd-networkd
[tomegun: pruned the commit message as not to contradict the follow-up commit]
2014-02-21 14:37:53 +01:00
Tom Gundersen
bcbca8291f networkd: don't hard depend on system bus
We may not have a dbus daemon in the initrd (until we can rely on kdbus). In
this case, simply ignore any attempts at using the bus. There is only one user
for now, but surely more to come.

In order to work reliably in the real root without kdbus, but at the same time
don't delay boot when kdbus is in use, order ourselves after dbus.service.
2014-01-18 01:56:41 +01:00
Tom Gundersen
1346b1f038 sd-dhcp-client/networkd: add transient hostname support 2014-01-16 20:32:08 +01:00
Lennart Poettering
74f9e0f203 units: run systemd-networkd.service only if CAP_NET_ADMIN capability is around
This has the effect that systemd-networkd won't run in containers
without network namespacing wher CAP_NET_ADMIN is (usually) not
available. It will still run in containers with network namespacing on
(where CAP_NET_ADMIN is usually avilable).

We might remove this condition check again if networkd provides services
to apps that also are useful in containers lacking network namespacing,
however, as long as it doesn't it should be handled like udevd and be
excluded in such containers.
2013-12-18 18:21:27 +01:00
Lennart Poettering
cde93897cd event: hook up sd-event with the service watchdog logic
Adds a new call sd_event_set_watchdog() that can be used to hook up the
event loop with the watchdog supervision logic of systemd. If enabled
and $WATCHDOG_USEC is set the event loop will ping the invoking systemd
daemon right after coming back from epoll_wait() but not more often than
$WATCHDOG_USEC/4. The epoll_wait() will sleep no longer than
$WATCHDOG_USEC/4*3, to make sure the service manager is called in time.

This means that setting WatchdogSec= in a .service file and calling
sd_event_set_watchdog() in your daemon is enough to hook it up with the
watchdog logic.
2013-12-11 18:20:09 +01:00
Tom Gundersen
4b6141c424 networkd: use Type=notify
Also start earlier during boot.
2013-11-23 02:07:08 +01:00
Tom Gundersen
f579559b3a networkd: add a basic network daemon
This daemon listens for and configures network devices tagged with
'systemd-networkd'. By default, no devices are tagged so this daemon
can safely run in parallel with existing network daemons/scripts.

Networks are configured in /etc/systemd/network/*.network. The first .network
file that matches a given link is applied. The matching logic is similar to
the one for .link files, but additionally supports matching on interface name.

The mid-term aim is to provide an alternative to ad-hoc scripts currently used
in initrd's and for wired setups that don't change much (e.g., as seen on
servers/and some embedded systems).

Currently, static addresses and a gateway can be configured.

Example .network file:

[Match]
Name=wlp2s0

[Network]
Description=My Network
Gateway=192.168.1.1
Address=192.168.1.23/24
Address=fe80::9aee:94ff:fe3f:c618/64
2013-11-09 23:41:17 +01:00