212 lines
7.7 KiB
Scheme
212 lines
7.7 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
||
;;; under the terms of the GNU General Public License as published by
|
||
;;; the Free Software Foundation; either version 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; GNU Guix is distributed in the hope that it will be useful, but
|
||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;; GNU General Public License for more details.
|
||
;;;
|
||
;;; You should have received a copy of the GNU General Public License
|
||
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (gnu system dmd)
|
||
#:use-module (guix store)
|
||
#:use-module (guix packages)
|
||
#:use-module (guix derivations)
|
||
#:use-module (guix records)
|
||
#:use-module ((gnu packages base)
|
||
#:select (glibc-final))
|
||
#:use-module ((gnu packages system)
|
||
#:select (mingetty inetutils))
|
||
#:use-module ((gnu packages package-management)
|
||
#:select (guix))
|
||
#:use-module ((gnu packages linux)
|
||
#:select (net-tools))
|
||
#:use-module (ice-9 match)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (guix monads)
|
||
#:export (service?
|
||
service
|
||
service-provision
|
||
service-requirement
|
||
service-respawn?
|
||
service-start
|
||
service-stop
|
||
service-inputs
|
||
|
||
host-name-service
|
||
syslog-service
|
||
mingetty-service
|
||
nscd-service
|
||
guix-service
|
||
static-networking-service
|
||
|
||
dmd-configuration-file))
|
||
|
||
;;; Commentary:
|
||
;;;
|
||
;;; System services as cajoled by dmd.
|
||
;;;
|
||
;;; Code:
|
||
|
||
(define-record-type* <service>
|
||
service make-service
|
||
service?
|
||
(provision service-provision) ; list of symbols
|
||
(requirement service-requirement ; list of symbols
|
||
(default '()))
|
||
(respawn? service-respawn? ; Boolean
|
||
(default #t))
|
||
(start service-start) ; expression
|
||
(stop service-stop ; expression
|
||
(default #f))
|
||
(inputs service-inputs ; list of inputs
|
||
(default '())))
|
||
|
||
(define (host-name-service name)
|
||
"Return a service that sets the host name to NAME."
|
||
(with-monad %store-monad
|
||
(return (service
|
||
(provision '(host-name))
|
||
(start `(lambda _
|
||
(sethostname ,name)))
|
||
(respawn? #f)))))
|
||
|
||
(define (mingetty-service tty)
|
||
"Return a service to run mingetty on TTY."
|
||
(mlet %store-monad ((mingetty-bin (package-file mingetty "sbin/mingetty")))
|
||
(return
|
||
(service
|
||
(provision (list (symbol-append 'term- (string->symbol tty))))
|
||
|
||
;; Since the login prompt shows the host name, wait for the 'host-name'
|
||
;; service to be done.
|
||
(requirement '(host-name))
|
||
|
||
(start `(make-forkexec-constructor ,mingetty-bin "--noclear" ,tty))
|
||
(inputs `(("mingetty" ,mingetty)))))))
|
||
|
||
(define* (nscd-service #:key (glibc glibc-final))
|
||
"Return a service that runs libc's name service cache daemon (nscd)."
|
||
(mlet %store-monad ((nscd (package-file glibc "sbin/nscd")))
|
||
(return (service
|
||
(provision '(nscd))
|
||
(start `(make-forkexec-constructor ,nscd "-f" "/dev/null"))
|
||
|
||
;; XXX: Local copy of 'make-kill-destructor' because the one upstream
|
||
;; uses the broken 'opt-lambda' macro.
|
||
(stop `(lambda* (#:optional (signal SIGTERM))
|
||
(lambda (pid . args)
|
||
(kill pid signal)
|
||
#f)))
|
||
|
||
(respawn? #f)
|
||
(inputs `(("glibc" ,glibc)))))))
|
||
|
||
(define (syslog-service)
|
||
"Return a service that runs 'syslogd' with reasonable default settings."
|
||
|
||
;; Snippet adapted from the GNU inetutils manual.
|
||
(define contents "
|
||
# Log all kernel messages, authentication messages of
|
||
# level notice or higher and anything of level err or
|
||
# higher to the console.
|
||
# Don't log private authentication messages!
|
||
*.err;kern.*;auth.notice;authpriv.none /dev/console
|
||
|
||
# Log anything (except mail) of level info or higher.
|
||
# Don't log private authentication messages!
|
||
*.info;mail.none;authpriv.none /var/log/messages
|
||
|
||
# Same, in a different place.
|
||
*.info;mail.none;authpriv.none /dev/tty12
|
||
|
||
# The authpriv file has restricted access.
|
||
authpriv.* /var/log/secure
|
||
|
||
# Log all the mail messages in one place.
|
||
mail.* /var/log/maillog
|
||
")
|
||
|
||
(mlet %store-monad
|
||
((syslog.conf (text-file "syslog.conf" contents))
|
||
(syslogd (package-file inetutils "libexec/syslogd")))
|
||
(return
|
||
(service
|
||
(provision '(syslogd))
|
||
(start `(make-forkexec-constructor ,syslogd
|
||
"--rcfile" ,syslog.conf))
|
||
(inputs `(("inetutils" ,inetutils)
|
||
("syslog.conf" ,syslog.conf)))))))
|
||
|
||
(define* (guix-service #:key (guix guix) (builder-group "guixbuild"))
|
||
"Return a service that runs the build daemon from GUIX."
|
||
(mlet %store-monad ((daemon (package-file guix "bin/guix-daemon")))
|
||
(return (service
|
||
(provision '(guix-daemon))
|
||
(start `(make-forkexec-constructor ,daemon
|
||
"--build-users-group"
|
||
,builder-group))
|
||
(inputs `(("guix" ,guix)))))))
|
||
|
||
(define* (static-networking-service interface ip
|
||
#:key
|
||
gateway
|
||
(inetutils inetutils)
|
||
(net-tools net-tools))
|
||
"Return a service that starts INTERFACE with address IP. If GATEWAY is
|
||
true, it must be a string specifying the default network gateway."
|
||
|
||
;; TODO: Eventually we should do this using Guile's networking procedures,
|
||
;; like 'configure-qemu-networking' does, but the patch that does this is
|
||
;; not yet in stock Guile.
|
||
(mlet %store-monad ((ifconfig (package-file inetutils "bin/ifconfig"))
|
||
(route (package-file net-tools "sbin/route")))
|
||
(return
|
||
(service
|
||
(provision '(networking))
|
||
(start `(lambda _
|
||
(and (zero? (system* ,ifconfig ,interface ,ip "up"))
|
||
,(if gateway
|
||
`(begin
|
||
(sleep 3) ; XXX
|
||
(zero? (system* ,route "add" "-net" "default"
|
||
"gw" ,gateway)))
|
||
#t))))
|
||
(stop `(lambda _
|
||
(system* ,ifconfig ,interface "down")
|
||
(system* ,route "del" "-net" "default")))
|
||
(respawn? #f)
|
||
(inputs `(("inetutils" ,inetutils)
|
||
,@(if gateway
|
||
`(("net-tools" ,net-tools))
|
||
'())))))))
|
||
|
||
|
||
(define (dmd-configuration-file services)
|
||
"Return the dmd configuration file for SERVICES."
|
||
(define config
|
||
`(begin
|
||
(register-services
|
||
,@(map (match-lambda
|
||
(($ <service> provision requirement respawn? start stop)
|
||
`(make <service>
|
||
#:provides ',provision
|
||
#:requires ',requirement
|
||
#:respawn? ,respawn?
|
||
#:start ,start
|
||
#:stop ,stop)))
|
||
services))
|
||
(for-each start ',(append-map service-provision services))))
|
||
|
||
(text-file "dmd.conf" (object->string config)))
|
||
|
||
;;; dmd.scm ends here
|