* 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-ip-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.
---
doc/guix.texi | 17 +++++++++++
gnu/services/networking.scm | 72 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 89 insertions(+)
Toggle diff (120 lines)
diff --git a/doc/guix.texi b/doc/guix.texi
index 64f73b38a..3b62a0578 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -10357,6 +10357,23 @@ Return a service that runs @var{dhcp}, a Dynamic Host Configuration
Protocol (DHCP) client, on all the non-loopback network interfaces.
@end deffn
+@deffn {Scheme Procedure} dhcpd-service-type
+This type defines a DHCP daemon. To create a service of this type, you
+must supply a @code{<dhcpd-configuration>}. For example:
+
+@example
+(service dhcpd-service-type
+ (dhcpd-configuration (config-file (local-file "my-dhcpd.conf"))
+ (interfaces '("enp2s0f0"))))
+@end example
+
+Here, @file{my-dhcpd.conf} is a local file that defines a valid
+@command{dhcpd} configuration. Any ``file-like'' object will do here.
+For example, you could use @code{plain-file} instead of
+@code{local-file} if you prefer to embed the @code{dhcpd} configuration
+file in your scheme code.
+@end deffn
+
@defvr {Scheme Variable} static-networking-service-type
This is the type for statically-configured network interfaces.
@c TODO Document <static-networking> data structures.
diff --git a/gnu/services/networking.scm b/gnu/services/networking.scm
index b0c23aafc..d562b7011 100644
--- a/gnu/services/networking.scm
+++ b/gnu/services/networking.scm
@@ -55,6 +55,18 @@
static-networking-service
static-networking-service-type
dhcp-client-service
+
+ dhcpd-service-type
+ dhcpd-configuration
+ dhcpd-configuration?
+ dhcpd-configuration-package
+ dhcpd-configuration-config-file
+ dhcpd-configuration-ip-version
+ dhcpd-configuration-run-directory
+ dhcpd-configuration-lease-file
+ dhcpd-configuration-pid-file
+ dhcpd-configuration-interfaces
+
%ntp-servers
ntp-configuration
@@ -338,6 +350,66 @@ to handle."
Protocol (DHCP) client, on all the non-loopback network interfaces."
(service dhcp-client-service-type dhcp))
+(define-record-type* <dhcpd-configuration> dhcpd-configuration
+ make-dhcpd-configuration
+ dhcpd-configuration?
+ (package dhcpd-configuration-package ;<package>
+ (default isc-dhcp))
+ (config-file dhcpd-configuration-config-file ;file-like
+ (default #f))
+ (ip-version dhcpd-ip-version ; either "4" or "6"
+ (default "4"))
+ (run-directory dhcpd-run-directory
+ (default "/run/dhcpd"))
+ (lease-file dhcpd-lease-file
+ (default "/var/db/dhcpd.leases"))
+ (pid-file dhcpd-pid-file
+ (default "/run/dhcpd/dhcpd.pid"))
+ (interfaces dhcpd-interfaces ; list of strings, e.g. (list "enp0s25")
+ (default '())))
+
+(define dhcpd-shepherd-service
+ (match-lambda
+ (($ <dhcpd-configuration> package config-file ip-version _ lease-file pid-file interfaces)
+ (when (null-list? interfaces)
+ (error "Must specify at least one interface for DHCP daemon to use"))
+ (unless config-file
+ (error "Must supply a config-file"))
+ (list (shepherd-service
+ (provision '(dhcp-daemon))
+ (documentation "Run the DHCP daemon.")
+ (requirement '(networking))
+ (start #~(make-forkexec-constructor
+ '(#$(file-append package "/sbin/dhcpd")
+ #$(string-append "-" ip-version)
+ "-lf" #$lease-file
+ "-pf" #$pid-file
+ "-cf" #$config-file
+ #$@interfaces)
+ #:pid-file #$pid-file))
+ (stop #~(make-kill-destructor)))))))
+
+(define dhcpd-activation
+ (match-lambda
+ (($ <dhcpd-configuration> package config-file _ run-directory lease-file _ _)
+ #~(begin
+ (unless (file-exists? #$run-directory)
+ (mkdir #$run-directory))
+ ;; According to the DHCP manual (man dhcpd.leases), the lease
+ ;; database must be present for dhcpd to start successfully.
+ (unless (file-exists? #$lease-file)
+ (with-output-to-file #$lease-file
+ (lambda _ (display ""))))
+ ;; Validate the config.
+ (zero? (system* #$(file-append package "/sbin/dhcpd") "-t" "-cf" #$config-file))))))
+
+(define dhcpd-service-type
+ (service-type
+ (name 'dhcpd)
+ (extensions
+ (list (service-extension shepherd-root-service-type dhcpd-shepherd-service)
+ (service-extension activation-service-type dhcpd-activation)))))
+
(define %ntp-servers
;; Default set of NTP servers. These URLs are managed by the NTP Pool project.
;; Within Guix, Leo Famulari <leo@famulari.name> is the administrative contact
--
2.15.1
