diff options
Diffstat (limited to 'gnu/services/dbus.scm')
| -rw-r--r-- | gnu/services/dbus.scm | 94 |
1 files changed, 93 insertions, 1 deletions
diff --git a/gnu/services/dbus.scm b/gnu/services/dbus.scm index 876f56d45f..26390a4acd 100644 --- a/gnu/services/dbus.scm +++ b/gnu/services/dbus.scm @@ -21,7 +21,9 @@ #:use-module (gnu services) #:use-module (gnu services shepherd) #:use-module (gnu system shadow) + #:use-module (gnu system pam) #:use-module ((gnu packages glib) #:select (dbus)) + #:use-module (gnu packages polkit) #:use-module (gnu packages admin) #:use-module (guix gexp) #:use-module (guix records) @@ -30,7 +32,10 @@ #:export (dbus-configuration dbus-configuration? dbus-root-service-type - dbus-service)) + dbus-service + + polkit-service-type + polkit-service)) ;;; ;;; D-Bus. @@ -218,4 +223,91 @@ and policy files. For example, to allow avahi-daemon to use the system bus, (dbus-configuration (dbus dbus) (services services)))) + +;;; +;;; Polkit privilege management service. +;;; + +(define-record-type* <polkit-configuration> + polkit-configuration make-polkit-configuration + polkit-configuration? + (polkit polkit-configuration-polkit ;<package> + (default polkit)) + (actions polkit-configuration-actions ;list of <package> + (default '()))) + +(define %polkit-accounts + (list (user-group (name "polkitd") (system? #t)) + (user-account + (name "polkitd") + (group "polkitd") + (system? #t) + (comment "Polkit daemon user") + (home-directory "/var/empty") + (shell "/run/current-system/profile/sbin/nologin")))) + +(define %polkit-pam-services + (list (unix-pam-service "polkit-1"))) + +(define (polkit-directory packages) + "Return a directory containing an @file{actions} and possibly a +@file{rules.d} sub-directory, for use as @file{/etc/polkit-1}." + (with-imported-modules '((guix build union)) + (computed-file "etc-polkit-1" + #~(begin + (use-modules (guix build union) (srfi srfi-26)) + + (union-build #$output + (map (cut string-append <> + "/share/polkit-1") + (list #$@packages))))))) + +(define polkit-etc-files + (match-lambda + (($ <polkit-configuration> polkit packages) + `(("polkit-1" ,(polkit-directory (cons polkit packages))))))) + +(define polkit-setuid-programs + (match-lambda + (($ <polkit-configuration> polkit) + (list (file-append polkit "/lib/polkit-1/polkit-agent-helper-1") + (file-append polkit "/bin/pkexec"))))) + +(define polkit-service-type + (service-type (name 'polkit) + (extensions + (list (service-extension account-service-type + (const %polkit-accounts)) + (service-extension pam-root-service-type + (const %polkit-pam-services)) + (service-extension dbus-root-service-type + (compose + list + polkit-configuration-polkit)) + (service-extension etc-service-type + polkit-etc-files) + (service-extension setuid-program-service-type + polkit-setuid-programs))) + + ;; Extensions are lists of packages that provide polkit rules + ;; or actions under share/polkit-1/{actions,rules.d}. + (compose concatenate) + (extend (lambda (config actions) + (polkit-configuration + (inherit config) + (actions + (append (polkit-configuration-actions config) + actions))))))) + +(define* (polkit-service #:key (polkit polkit)) + "Return a service that runs the +@uref{http://www.freedesktop.org/wiki/Software/polkit/, Polkit privilege +management service}, which allows system administrators to grant access to +privileged operations in a structured way. By querying the Polkit service, a +privileged system component can know when it should grant additional +capabilities to ordinary users. For example, an ordinary user can be granted +the capability to suspend the system if the user is logged in locally." + (service polkit-service-type + (polkit-configuration (polkit polkit)))) + ;;; dbus.scm ends here |