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authorraid5atemyhomework <raid5atemyhomework@protonmail.com>2021-03-22 11:23:32 +0800
committerDanny Milosavljevic <dannym@scratchpost.org>2021-05-11 16:13:48 +0200
commita3df382525ac515d1aa083f7f5bd3bd31eb1df40 (patch)
treeceaa4eaf3a5c2d2a85e64ca83b7d23a9e9d306ed /gnu/services.scm
parentbddad00bffc5837e89942756fa5b7234f63f1f47 (diff)
downloadguix-a3df382525ac515d1aa083f7f5bd3bd31eb1df40.tar
guix-a3df382525ac515d1aa083f7f5bd3bd31eb1df40.tar.gz
gnu: Allow services to install kernel-loadable modules.
* gnu/system.scm (operating-system-directory-base-entries): Remove code to handle generation of "kernel" for linux-libre kernels. (operating-system-default-essential-services): Instantiate linux-builder-service-type. (package-for-kernel): Move ... * gnu/services.scm: ... to here. (linux-builder-service-type): New variable. (linux-builder-configuration): New type. (linux-loadable-module-service-type): New variable. * gnu/tests/linux-modules.scm (run-loadable-kernel-modules-test): Move code to ... (run-loadable-kernel-modules-test-base): ... new procedure here. (run-loadable-kernel-modules-service-test): New procedure. (%test-loadable-kernel-modules-service-0): New variable. (%test-loadable-kernel-modules-service-1): New variable. (%test-loadable-kernel-modules-service-2): New variable. * doc/guix.texi: Document linux-loadable-module-service-type. Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>
Diffstat (limited to 'gnu/services.scm')
-rw-r--r--gnu/services.scm90
1 files changed, 90 insertions, 0 deletions
diff --git a/gnu/services.scm b/gnu/services.scm
index e7da0a026d..8d413e198e 100644
--- a/gnu/services.scm
+++ b/gnu/services.scm
@@ -3,6 +3,7 @@
;;; Copyright © 2016 Chris Marusich <cmmarusich@gmail.com>
;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2020, 2021 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2021 raid5atemyhomework <raid5atemyhomework@protonmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -34,6 +35,8 @@
#:use-module (guix diagnostics)
#:autoload (guix openpgp) (openpgp-format-fingerprint)
#:use-module (guix modules)
+ #:use-module (guix packages)
+ #:use-module (guix utils)
#:use-module (gnu packages base)
#:use-module (gnu packages bash)
#:use-module (gnu packages hurd)
@@ -107,6 +110,12 @@
profile-service-type
firmware-service-type
gc-root-service-type
+ linux-builder-service-type
+ linux-builder-configuration
+ linux-builder-configuration?
+ linux-builder-configuration-kernel
+ linux-builder-configuration-modules
+ linux-loadable-module-service-type
%boot-service
%activation-service
@@ -883,6 +892,87 @@ as Wifi cards.")))
will not be reclaimed by the garbage collector.")
(default-value '())))
+;; Configuration for the Linux kernel builder.
+(define-record-type* <linux-builder-configuration>
+ linux-builder-configuration
+ make-linux-builder-configuration
+ linux-builder-configuration?
+ this-linux-builder-configuration
+
+ (kernel linux-builder-configuration-kernel) ; package
+ (modules linux-builder-configuration-modules (default '()))) ; list of packages
+
+(define (package-for-kernel target-kernel module-package)
+ "Return a package like MODULE-PACKAGE, adapted for TARGET-KERNEL, if
+possible (that is if there's a LINUX keyword argument in the build system)."
+ (package
+ (inherit module-package)
+ (arguments
+ (substitute-keyword-arguments (package-arguments module-package)
+ ((#:linux kernel #f)
+ target-kernel)))))
+
+(define (linux-builder-configuration->system-entry config)
+ "Return the kernel entry of the 'system' directory."
+ (let* ((kernel (linux-builder-configuration-kernel config))
+ (modules (linux-builder-configuration-modules config))
+ (kernel (profile
+ (content (packages->manifest
+ (cons kernel
+ (map (lambda (module)
+ (cond
+ ((package? module)
+ (package-for-kernel kernel module))
+ ;; support (,package "kernel-module-output")
+ ((and (list? module) (package? (car module)))
+ (cons (package-for-kernel kernel
+ (car module))
+ (cdr module)))
+ (else
+ module)))
+ modules))))
+ (hooks (list linux-module-database)))))
+ (with-monad %store-monad
+ (return `(("kernel" ,kernel))))))
+
+(define linux-builder-service-type
+ (service-type (name 'linux-builder)
+ (extensions
+ (list (service-extension system-service-type
+ linux-builder-configuration->system-entry)))
+ (default-value '())
+ (compose identity)
+ (extend (lambda (config modifiers)
+ (if (null? modifiers)
+ config
+ ((apply compose modifiers) config))))
+ (description "Builds the linux-libre kernel profile, containing
+the kernel itself and any linux-loadable kernel modules. This can be extended
+with a function that accepts the current configuration and returns a new
+configuration.")))
+
+(define (linux-loadable-module-builder-modifier modules)
+ "Extends linux-builder-service-type by appending the given MODULES to the
+configuration of linux-builder-service-type."
+ (lambda (config)
+ (linux-builder-configuration
+ (inherit config)
+ (modules (append (linux-builder-configuration-modules config)
+ modules)))))
+
+(define linux-loadable-module-service-type
+ (service-type (name 'linux-loadable-modules)
+ (extensions
+ (list (service-extension linux-builder-service-type
+ linux-loadable-module-builder-modifier)))
+ (default-value '())
+ (compose concatenate)
+ (extend append)
+ (description "Adds packages and package outputs as modules
+included in the booted linux-libre profile. Other services can extend this
+service type to add particular modules to the set of linux-loadable modules.")))
+
+
;;;
;;; Service folding.