GNU bug report logs - #70845
[PATCH] services: Add fancontrol-service-type

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From: Adrien 'neox' Bourmault <neox <at> gnu.org>
To: 70845 <at> debbugs.gnu.org
Cc: Adrien 'neox' Bourmault <neox <at> gnu.org>
Subject: [bug#70845] [PATCH] services: Add fancontrol-service-type
Date: Thu,  9 May 2024 17:37:43 +0200

Hi! I've created a fancontrol service for my own use on a KGPE-D16
workstation, and wanted to share it with GNU Guix. The configuration
has to be generated upstream with pwmconfig (lm-sensors package)
and you just have to tell the service where it is for it to work.

Change-Id: I120e54cbf849eebd088be2a4d0a0113ffcdfcd84
Signed-off-by: Adrien 'neox' Bourmault <neox <at> gnu.org>
---
 gnu/services/pm.scm | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/gnu/services/pm.scm b/gnu/services/pm.scm
index 3daf484cc1..1b305e76a6 100644
--- a/gnu/services/pm.scm
+++ b/gnu/services/pm.scm
@@ -31,7 +31,9 @@ (define-module (gnu services pm)
             tlp-configuration
 
             thermald-configuration
-            thermald-service-type))
+            thermald-service-type
+            
+            fancontrol-service-type))
 
 (define (uglify-field-name field-name)
   (let ((str (symbol->string field-name)))
@@ -466,3 +468,31 @@ (define thermald-service-type
    (default-value (thermald-configuration))
    (description "Run thermald, a CPU frequency scaling service that helps
 prevent overheating.")))
+
+;;;
+;;; fancontrol
+;;;
+;;; This service implements fan control in conjunction with the tools in the
+;;; lm-sensors package (pwmconfig/fancontrol).
+
+(define (fancontrol-shepherd-service config)
+  (shepherd-service
+   (documentation "Run the fancontrol daemon (fancontrol-daemon)." )
+   (provision '(fancontrol))
+   (requirement '(udev user-processes))
+   (start #~(make-forkexec-constructor
+             (list #$(file-append lm-sensors "/sbin/fancontrol")
+                   #$config)
+             #:user "root" #:group "root"
+             #:log-file "/var/log/fancontrol.log"))
+   (stop #~(make-kill-destructor))))
+
+(define fancontrol-service-type
+  (service-type
+   (name 'fancontrol)
+   (description
+    "Run fancontrol as a daemon.")
+   (extensions
+    (list (service-extension shepherd-root-service-type
+            (compose list fancontrol-shepherd-service))))))
+
-- 
2.41.0

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