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Diffstat (limited to 'gnu')
| -rw-r--r-- | gnu/services/upower.scm | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/gnu/services/upower.scm b/gnu/services/upower.scm new file mode 100644 index 0000000000..3654c812f1 --- /dev/null +++ b/gnu/services/upower.scm @@ -0,0 +1,122 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2015 Andy Wingo <wingo@igalia.com> +;;; +;;; 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 upower) + #:use-module (gnu services) + #:use-module (gnu system shadow) + #:use-module (gnu packages gnome) + #:use-module (ice-9 match) + #:use-module (guix monads) + #:use-module (guix store) + #:use-module (guix gexp) + #:export (upower-service)) + +;;; Commentary: +;;; +;;; This module provides service definitions for the UPower power and battery +;;; monitoring service. +;;; +;;; Code: + +(define* (configuration-file #:key watts-up-pro? poll-batteries? ignore-lid? + use-percentage-for-policy? percentage-low + percentage-critical percentage-action + time-low time-critical time-action + critical-power-action) + "Return an upower-daemon configuration file." + (define (bool value) + (if value "true\n" "false\n")) + + (text-file "UPower.conf" + (string-append + "[UPower]\n" + "EnableWattsUpPro=" (bool watts-up-pro?) + "NoPollBatteries=" (bool (not poll-batteries?)) + "IgnoreLid=" (bool ignore-lid?) + "UsePercentageForPolicy=" (bool use-percentage-for-policy?) + "PercentageLow=" (number->string percentage-low) "\n" + "PercentageCritical=" (number->string percentage-critical) "\n" + "PercentageAction=" (number->string percentage-action) "\n" + "TimeLow=" (number->string time-low) "\n" + "TimeCritical=" (number->string time-critical) "\n" + "TimeAction=" (number->string time-action) "\n" + "CriticalPowerAction=" (match critical-power-action + ('hybrid-sleep "HybridSleep") + ('hibernate "Hibernate") + ('power-off "PowerOff")) + "\n"))) + +(define* (upower-service #:key (upower upower) + (watts-up-pro? #f) + (poll-batteries? #t) + (ignore-lid? #f) + (use-percentage-for-policy? #f) + (percentage-low 10) + (percentage-critical 3) + (percentage-action 2) + (time-low 1200) + (time-critical 300) + (time-action 120) + (critical-power-action 'hybrid-sleep)) + "Return a service that runs @uref{http://upower.freedesktop.org/, +@command{upowerd}}, a system-wide monitor for power consumption and battery +levels, with the given configuration settings. It implements the +@code{org.freedesktop.UPower} D-Bus interface, and is notably used by GNOME." + (mlet %store-monad ((config (configuration-file + #:watts-up-pro? watts-up-pro? + #:poll-batteries? poll-batteries? + #:ignore-lid? ignore-lid? + #:use-percentage-for-policy? use-percentage-for-policy? + #:percentage-low percentage-low + #:percentage-critical percentage-critical + #:percentage-action percentage-action + #:time-low time-low + #:time-critical time-critical + #:time-action time-action + #:critical-power-action critical-power-action))) + (return + (service + (documentation "Run the UPower power and battery monitor.") + (provision '(upower-daemon)) + (requirement '(dbus-system udev)) + + (start #~(make-forkexec-constructor + (list (string-append #$upower "/libexec/upowerd")) + #:environment-variables + (list (string-append "UPOWER_CONF_FILE_NAME=" #$config)))) + (stop #~(make-kill-destructor)) + (activate #~(begin + (use-modules (guix build utils)) + (mkdir-p "/var/lib/upower") + (let ((user (getpwnam "upower"))) + (chown "/var/lib/upower" + (passwd:uid user) (passwd:gid user))))) + + (user-groups (list (user-group + (name "upower") + (system? #t)))) + (user-accounts (list (user-account + (name "upower") + (group "upower") + (system? #t) + (comment "UPower daemon user") + (home-directory "/var/empty") + (shell + "/run/current-system/profile/sbin/nologin")))))))) + +;;; upower.scm ends here |