loginManager.js: Check for logind, not for systemd

It is possible to build systemd without logind, in which case
/sys/fs/cgroup/systemd would still exist. Check for /run/systemd/seats instead,
as recommended by systemd upstream.

For details, see:
<https://mail.gnome.org/archives/desktop-devel-list/2013-March/msg00092.html>

https://bugzilla.gnome.org/show_bug.cgi?id=696252

diff --git a/js/misc/loginManager.js b/js/misc/loginManager.js
index 8543edea6299b80169b0f1b542687e4ba338be48..ce4af41e427d1978537660759ed089dddbdd68e4 100644 (file)
--- a/js/misc/loginManager.js
+++ b/js/misc/loginManager.js
@@ -76,7 +76,7 @@ const ConsoleKitSession = Gio.DBusProxy.makeProxyWrapper(ConsoleKitSessionIface)
 const ConsoleKitManager = Gio.DBusProxy.makeProxyWrapper(ConsoleKitManagerIface);
 
 function haveSystemd() {
-    return GLib.access("/sys/fs/cgroup/systemd", 0) >= 0;
+    return GLib.access("/run/systemd/seats", 0) >= 0;
 }
 
 function versionCompare(required, reference) {