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blob 83704084c3188f7e52a428b23db6a48f834a04fb 3197 bytes (raw)
name: gnu/services/sysctl.scm 	 # note: path name is non-authoritative(*)

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Sou Bunnbu <iyzsong@member.fsf.org>
;;; Copyright © 2021 Leo Famulari <leo@famulari.name>
;;;
;;; 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 services sysctl)
  #:use-module (gnu services)
  #:use-module (gnu services shepherd)
  #:use-module (gnu packages linux)
  #:use-module (guix gexp)
  #:use-module (guix records)
  #:use-module (srfi srfi-1)
  #:use-module (ice-9 match)
  #:export (sysctl-configuration
            sysctl-service-type
            default-sysctl-settings-service-type))

\f
;;;
;;; System Control Service.
;;;

(define-record-type* <sysctl-configuration>
  sysctl-configuration make-sysctl-configuration
  sysctl-configuration?
  (sysctl   sysctl-configuration-sysctl    ; path of the 'sysctl' command
            (default (file-append procps "/sbin/sysctl")))
  (settings sysctl-configuration-settings  ; alist of string pairs
            (default '())))

(define (sysctl-configuration-settings->sysctl.conf settings)
  "Return a file for @command{sysctl} to set kernel parameters as specified by
@var{settings}."
  (apply mixed-text-file "sysctl.conf"
         (append-map (match-lambda
                       ((key . value)
                        (list key "=" value "\n")))
                     settings)))

(define sysctl-shepherd-service
  (match-lambda
    (($ <sysctl-configuration> sysctl settings)
     (let ((sysctl.conf
            (sysctl-configuration-settings->sysctl.conf settings)))
       (shepherd-service
        (documentation "Configure kernel parameters at boot.")
        (provision '(sysctl))
        (start #~(lambda _
                   (zero? (system* #$sysctl "--load" #$sysctl.conf))))
        (one-shot? #t))))))

(define sysctl-service-type
  (service-type
   (name 'sysctl)
   (extensions
    (list (service-extension shepherd-root-service-type
                             (compose list sysctl-shepherd-service))))
   (compose concatenate)
   (extend (lambda (config settings)
             (sysctl-configuration
              (inherit config)
              (settings (append (sysctl-configuration-settings config)
                                settings)))))
   (default-value (sysctl-configuration))))

(define default-sysctl-settings-service-type
;  "Return a service that is used to set default kernel parameters for Guix
;  System."
  (service-type
    (name 'default-sysctl-settings)
    (extensions
      (list (service-extension sysctl-service-type
                               identity)))))

debug log:

solving 83704084c3 ...
found 83704084c3 in https://yhetil.org/guix/YE+txs/5q6sfGsKn@jasmine.lan/
found eb7a61b2a9 in https://git.savannah.gnu.org/cgit/guix.git
preparing index
index prepared:
100644 eb7a61b2a9dd028a4775d5956a4f2078505b71f4	gnu/services/sysctl.scm

applying [1/1] https://yhetil.org/guix/YE+txs/5q6sfGsKn@jasmine.lan/
diff --git a/gnu/services/sysctl.scm b/gnu/services/sysctl.scm
index eb7a61b2a9..83704084c3 100644

Checking patch gnu/services/sysctl.scm...
Applied patch gnu/services/sysctl.scm cleanly.

index at:
100644 83704084c3188f7e52a428b23db6a48f834a04fb	gnu/services/sysctl.scm

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