diff options
Diffstat (limited to 'gnu/services/linux.scm')
| -rw-r--r-- | gnu/services/linux.scm | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/gnu/services/linux.scm b/gnu/services/linux.scm index caa0326c31..781a61973c 100644 --- a/gnu/services/linux.scm +++ b/gnu/services/linux.scm @@ -1,5 +1,6 @@ ;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com> +;;; Copyright © 2020 Brice Waegeneire <brice@waegenei.re> ;;; ;;; This file is part of GNU Guix. ;;; @@ -25,6 +26,8 @@ #:use-module (gnu packages linux) #:use-module (srfi srfi-1) #:use-module (srfi srfi-26) + #:use-module (srfi srfi-34) + #:use-module (srfi srfi-35) #:use-module (ice-9 match) #:export (earlyoom-configuration earlyoom-configuration? @@ -37,7 +40,9 @@ earlyoom-configuration-ignore-positive-oom-score-adj? earlyoom-configuration-show-debug-messages? earlyoom-configuration-send-notification-command - earlyoom-service-type)) + earlyoom-service-type + + kernel-module-loader-service-type)) ;;; @@ -123,3 +128,53 @@ representation." (list (service-extension shepherd-root-service-type (compose list earlyoom-shepherd-service)))) (description "Run @command{earlyoom}, the Early OOM daemon."))) + + +;;; +;;; Kernel module loader. +;;; + +(define kernel-module-loader-shepherd-service + (match-lambda + ((and (? list? kernel-modules) ((? string?) ...)) + (list + (shepherd-service + (documentation "Load kernel modules.") + (provision '(kernel-module-loader)) + (requirement '(file-systems)) + (respawn? #f) + (one-shot? #t) + (modules `((srfi srfi-1) + (srfi srfi-34) + (srfi srfi-35) + (rnrs io ports) + ,@%default-modules)) + (start + #~(lambda _ + (cond + ((null? '#$kernel-modules) #t) + ((file-exists? "/proc/sys/kernel/modprobe") + (let ((modprobe (call-with-input-file + "/proc/sys/kernel/modprobe" get-line))) + (guard (c ((message-condition? c) + (format (current-error-port) "~a~%" + (condition-message c)) + #f)) + (every (lambda (module) + (invoke/quiet modprobe "--" module)) + '#$kernel-modules)))) + (else + (format (current-error-port) "error: ~a~%" + "Kernel is missing loadable module support.") + #f))))))))) + +(define kernel-module-loader-service-type + (service-type + (name 'kernel-module-loader) + (description "Load kernel modules.") + (extensions + (list (service-extension shepherd-root-service-type + kernel-module-loader-shepherd-service))) + (compose concatenate) + (extend append) + (default-value '()))) |