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authorDanny Milosavljevic <dannym@scratchpost.org>2018-04-30 00:40:21 +0200
committerDanny Milosavljevic <dannym@scratchpost.org>2018-04-30 03:47:14 +0200
commitc9436025a90b86047ba2203d58bbf238f8f9b2f9 (patch)
tree5d6b87861b6a4dba9e741867fda5890a0ea86469 /gnu/services/base.scm
parentf1f4a4f016291509ed97034af0216573cdacf36c (diff)
services: Move static-networking to (gnu services base).
* gnu/services/networking.scm (static-networking, static-networking?, static-networking-interface, static-networking-ip, static-networking-netmask, static-networking-gateway, static-networking-requirement, static-networking-service, static-networking-service-type): Move to... * gnu/services/base.scm: ...here.
Diffstat (limited to 'gnu/services/base.scm')
-rw-r--r--gnu/services/base.scm160
1 files changed, 159 insertions, 1 deletions
diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index be1bfce578..694aab882e 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -26,7 +26,6 @@
#:use-module (guix store)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
- #:use-module (gnu services networking)
#:use-module (gnu system pam)
#:use-module (gnu system shadow) ; 'user-account', etc.
#:use-module (gnu system uuid)
@@ -64,6 +63,18 @@
console-font-service
virtual-terminal-service-type
+ static-networking
+
+ static-networking?
+ static-networking-interface
+ static-networking-ip
+ static-networking-netmask
+ static-networking-gateway
+ static-networking-requirement
+
+ static-networking-service
+ static-networking-service-type
+
udev-configuration
udev-configuration?
udev-configuration-rules
@@ -2045,6 +2056,153 @@ This service is not part of @var{%base-services}."
(start #~(make-forkexec-constructor #$kmscon-command))
(stop #~(make-kill-destructor)))))))
+(define-record-type* <static-networking>
+ static-networking make-static-networking
+ static-networking?
+ (interface static-networking-interface)
+ (ip static-networking-ip)
+ (netmask static-networking-netmask
+ (default #f))
+ (gateway static-networking-gateway ;FIXME: doesn't belong here
+ (default #f))
+ (provision static-networking-provision
+ (default #f))
+ (requirement static-networking-requirement
+ (default '()))
+ (name-servers static-networking-name-servers ;FIXME: doesn't belong here
+ (default '())))
+
+(define static-networking-shepherd-service
+ (match-lambda
+ (($ <static-networking> interface ip netmask gateway provision
+ requirement name-servers)
+ (let ((loopback? (and provision (memq 'loopback provision))))
+ (shepherd-service
+
+ (documentation
+ "Bring up the networking interface using a static IP address.")
+ (requirement requirement)
+ (provision (or provision
+ (list (symbol-append 'networking-
+ (string->symbol interface)))))
+
+ (start #~(lambda _
+ ;; Return #t if successfully started.
+ (let* ((addr (inet-pton AF_INET #$ip))
+ (sockaddr (make-socket-address AF_INET addr 0))
+ (mask (and #$netmask
+ (inet-pton AF_INET #$netmask)))
+ (maskaddr (and mask
+ (make-socket-address AF_INET
+ mask 0)))
+ (gateway (and #$gateway
+ (inet-pton AF_INET #$gateway)))
+ (gatewayaddr (and gateway
+ (make-socket-address AF_INET
+ gateway 0))))
+ (configure-network-interface #$interface sockaddr
+ (logior IFF_UP
+ #$(if loopback?
+ #~IFF_LOOPBACK
+ 0))
+ #:netmask maskaddr)
+ (when gateway
+ (let ((sock (socket AF_INET SOCK_DGRAM 0)))
+ (add-network-route/gateway sock gatewayaddr)
+ (close-port sock))))))
+ (stop #~(lambda _
+ ;; Return #f is successfully stopped.
+ (let ((sock (socket AF_INET SOCK_STREAM 0)))
+ (when #$gateway
+ (delete-network-route sock
+ (make-socket-address
+ AF_INET INADDR_ANY 0)))
+ (set-network-interface-flags sock #$interface 0)
+ (close-port sock)
+: #f)))
+ (respawn? #f))))))
+
+(define (static-networking-etc-files interfaces)
+ "Return a /etc/resolv.conf entry for INTERFACES or the empty list."
+ (match (delete-duplicates
+ (append-map static-networking-name-servers
+ interfaces))
+ (()
+ '())
+ ((name-servers ...)
+ (let ((content (string-join
+ (map (cut string-append "nameserver " <>)
+ name-servers)
+ "\n" 'suffix)))
+ `(("resolv.conf"
+ ,(plain-file "resolv.conf"
+ (string-append "\
+# Generated by 'static-networking-service'.\n"
+ content))))))))
+
+(define (static-networking-shepherd-services interfaces)
+ "Return the list of Shepherd services to bring up INTERFACES, a list of
+<static-networking> objects."
+ (define (loopback? service)
+ (memq 'loopback (shepherd-service-provision service)))
+
+ (let ((services (map static-networking-shepherd-service interfaces)))
+ (match (remove loopback? services)
+ (()
+ ;; There's no interface other than 'loopback', so we assume that the
+ ;; 'networking' service will be provided by dhclient or similar.
+ services)
+ ((non-loopback ...)
+ ;; Assume we're providing all the interfaces, and thus, provide a
+ ;; 'networking' service.
+ (cons (shepherd-service
+ (provision '(networking))
+ (requirement (append-map shepherd-service-provision
+ services))
+ (start #~(const #t))
+ (stop #~(const #f))
+ (documentation "Bring up all the networking interfaces."))
+ services)))))
+
+(define static-networking-service-type
+ ;; The service type for statically-defined network interfaces.
+ (service-type (name 'static-networking)
+ (extensions
+ (list
+ (service-extension shepherd-root-service-type
+ static-networking-shepherd-services)
+ (service-extension etc-service-type
+ static-networking-etc-files)))
+ (compose concatenate)
+ (extend append)
+ (description
+ "Turn up the specified network interfaces upon startup,
+with the given IP address, gateway, netmask, and so on. The value for
+services of this type is a list of @code{static-networking} objects, one per
+network interface.")))
+
+(define* (static-networking-service interface ip
+ #:key
+ netmask gateway provision
+ ;; Most interfaces require udev to be usable.
+ (requirement '(udev))
+ (name-servers '()))
+ "Return a service that starts @var{interface} with address @var{ip}. If
+@var{netmask} is true, use it as the network mask. If @var{gateway} is true,
+it must be a string specifying the default network gateway.
+
+This procedure can be called several times, one for each network
+interface of interest. Behind the scenes what it does is extend
+@code{static-networking-service-type} with additional network interfaces
+to handle."
+ (simple-service 'static-network-interface
+ static-networking-service-type
+ (list (static-networking (interface interface) (ip ip)
+ (netmask netmask) (gateway gateway)
+ (provision provision)
+ (requirement requirement)
+ (name-servers name-servers)))))
+
(define %base-services
;; Convenience variable holding the basic services.