* gnu/services/networking.scm (tor-configuration->torrc): Set PidFile to
/var/run/tor/tor.pid in the base torrc configuration.
(tor-shepherd-service) <start>: Call make-forkexec-constructor/container with
a new #:pid-file argument to tell Shepherd where to find the PID file. Add a
a new <file-system-mapping> to its existing #:mappings argument to share
/var/run/tor with the the container.
(tor-hidden-services-activation): Update docstring. Create /var/run/tor and
set its permissions so only the tor user can access it.
* gnu/tests/networking.scm (%test-tor, %tor-os): New variables.
(run-tor-test): New procedure.
* doc/guix.texi (Networking Services): Document it.
* gnu/services/networking.scm (dhcpd-service-type): Add it.
(dhcpd-configuration, dhcpd-configuration?): Add it.
(dhcpd-configuration-package): Add it.
(dhcpd-configuration-config-file): Add it.
(dhcpd-configuration-version): Add it.
(dhcpd-configuration-run-directory): Add it.
(dhcpd-configuration-lease-file): Add it.
(dhcpd-configuration-pid-file): Add it.
(dhcpd-configuration-interfaces): Add it.
* gnu/tests/networking.scm (minimal-dhcpd-v4-config-file)
(dhcpd-v4-configuration, %dhcpd-os, run-dhcpd-test, %test-dhcpd): New
variables.
* gnu/tests/networking.scm (openvswitch-configuration-service,
%openvswitch-os): New variables.
(setup-openvswitch, run-openvswitch-test): New procedures.
(%test-openvswitch): New public variable.
* gnu/services/networking.scm (<inetd-configuration>, <inetd-entry>): New
record types.
(inetd-config-file, inetd-shepherd-service): New procedures.
(inetd-service-type): New variable.
* doc/guix.texi (Networking Services): Document it.
* gnu/tests/networking.scm: New file.
* gnu/local.mk: Add it.
