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services/udev: Allow configuring udev to run in debug mode.

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* gnu/services/base.scm (<udev-configuration>): <debug?>: New field.
* gnu/services/base.scm (udev-shepherd-service): Use it to add '--debug' to
the command line, if applicable.
* doc/guix.texi (Base Services): Document it.

Change-Id: I88243fb4f321ff0876dd227e3c2b22082d37cfcf
This commit is contained in:
Maxim Cournoyer 2025-02-24 16:36:41 +09:00
parent 8a103bc92f
commit dd64f441d3
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2 changed files with 16 additions and 6 deletions
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11
doc/guix.texi
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@ -20188,17 +20188,20 @@ In an @code{operating-system} declaration, this service type can be
@deftp {Data Type} udev-configuration @deftp {Data Type} udev-configuration
Data type representing the configuration of udev. Data type representing the configuration of udev.
@table @asis @table @code
@item @code{udev} (default: @code{eudev}) (type: file-like) @item udev (default: @code{eudev}) (type: file-like)
Package object of the udev service. This package is used at run-time, Package object of the udev service. This package is used at run-time,
when compiled for the target system. In order to generate the when compiled for the target system. In order to generate the
@file{hwdb.bin} hardware index, it is also used when generating the @file{hwdb.bin} hardware index, it is also used when generating the
system definition, compiled for the current system. system definition, compiled for the current system.
@item @code{rules} (default: @var{'()}) (type: list-of-file-like) @item debug? (default: @code{#f}) (type: boolean)
Whether to enable debug output.
@item rules (default: @code{'()}) (type: list-of-file-like)
List of file-like objects denoting udev rule files under a sub-directory. List of file-like objects denoting udev rule files under a sub-directory.
@item @code{hardware} (default: @var{'()}) (type: list-of-file-like) @item hardware (default: @code{'()}) (type: list-of-file-like)
List of file-like objects denoting udev hardware description files under List of file-like objects denoting udev hardware description files under
a sub-directory. a sub-directory.

11
gnu/services/base.scm
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@ -15,7 +15,7 @@
;;; Copyright © 2020, 2021 Brice Waegeneire <brice@waegenei.re> ;;; Copyright © 2020, 2021 Brice Waegeneire <brice@waegenei.re>
;;; Copyright © 2021 qblade <qblade@protonmail.com> ;;; Copyright © 2021 qblade <qblade@protonmail.com>
;;; Copyright © 2021 Hui Lu <luhuins@163.com> ;;; Copyright © 2021 Hui Lu <luhuins@163.com>
;;; Copyright © 2021, 2022, 2023 Maxim Cournoyer <maxim.cournoyer@gmail.com> ;;; Copyright © 2021-2023, 2025 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;; Copyright © 2021, 2025 muradm <mail@muradm.net> ;;; Copyright © 2021, 2025 muradm <mail@muradm.net>
;;; Copyright © 2022 Guillaume Le Vaillant <glv@posteo.net> ;;; Copyright © 2022 Guillaume Le Vaillant <glv@posteo.net>
;;; Copyright © 2022 Justin Veilleux <terramorpha@cock.li> ;;; Copyright © 2022 Justin Veilleux <terramorpha@cock.li>
@ -160,6 +160,8 @@
udev-configuration udev-configuration
udev-configuration? udev-configuration?
udev-configuration-udev
udev-configuration-debug?
udev-configuration-rules udev-configuration-rules
udev-configuration-hardware udev-configuration-hardware
udev-service-type udev-service-type
@ -2410,6 +2412,8 @@ command that allows you to share pre-built binaries with others over HTTP.")))
udev-configuration? udev-configuration?
(udev udev-configuration-udev ;file-like (udev udev-configuration-udev ;file-like
(default eudev)) (default eudev))
(debug? udev-configuration-debug? ;boolean
(default #f))
(rules udev-configuration-rules ;list of file-like (rules udev-configuration-rules ;list of file-like
(default '())) (default '()))
(hardware udev-configuration-hardware ;list of file-like (hardware udev-configuration-hardware ;list of file-like
@ -2552,7 +2556,10 @@ item of PACKAGES."
(umask old-umask)) (umask old-umask))
(let ((pid (fork+exec-command (let ((pid (fork+exec-command
(list udevd) `(,udevd
,@(if #$(udev-configuration-debug? config)
'("--debug")
'()))
#:environment-variables #:environment-variables
(cons* (cons*
;; The first one is for udev, the second one for ;; The first one is for udev, the second one for