[gnome-session/benzea/systemd-gnome-launched-drop-in-stable: 3/3] autostart-app: Place launched applications into a systemd scope

[Ray Strode <halfline src gnome org>]

commit e5ccfa69937428ee6aa4088291a75f6c230bad0f
Author: Benjamin Berg <bberg redhat com>
Date:   Thu Nov 28 14:56:30 2019 +0100

    autostart-app: Place launched applications into a systemd scope
    
    Try to place launched applications into a systemd scope. This will only
    have an effect on systemd managed sessions, where it will e.g. protect
    gnome-session from OOM actions to a child resulting in a service
    shutdown.

 gnome-session/gsm-autostart-app.c | 14 ++++++++++++++
 meson.build                       |  5 ++++-
 2 files changed, 18 insertions(+), 1 deletion(-)
---
diff --git a/gnome-session/gsm-autostart-app.c b/gnome-session/gsm-autostart-app.c
index 6fd5915a..28b1a88e 100644
--- a/gnome-session/gsm-autostart-app.c
+++ b/gnome-session/gsm-autostart-app.c
@@ -28,6 +28,11 @@
 #include <gio/gio.h>
 #include <gio/gdesktopappinfo.h>
 
+#ifdef HAVE_GNOME_SYSTEMD
+#define GNOME_DESKTOP_USE_UNSTABLE_API
+#include <libgnome-desktop/gnome-systemd.h>
+#endif
+
 #ifdef HAVE_SYSTEMD
 #ifdef ENABLE_SYSTEMD_JOURNAL
 #include <systemd/sd-journal.h>
@@ -960,6 +965,15 @@ app_launched (GAppLaunchContext *ctx,
         g_variant_lookup (platform_data, "startup-notification-id", "s", &sn_id);
         app->priv->pid = pid;
         app->priv->startup_id = sn_id;
+
+#ifdef HAVE_GNOME_SYSTEMD
+        /* We are not interested in the result. */
+        gnome_start_systemd_scope (app->priv->desktop_id,
+                                   pid,
+                                   NULL,
+                                   NULL,
+                                   NULL, NULL, NULL);
+#endif
 }
 
 #ifdef ENABLE_SYSTEMD_JOURNAL
diff --git a/meson.build b/meson.build
index fc0fa683..1a62113b 100644
--- a/meson.build
+++ b/meson.build
@@ -99,11 +99,12 @@ xtrans_dep = dependency('xtrans')
 ice_dep = dependency('ice')
 sm_dep = dependency('sm')
 x11_dep = dependency('x11')
+gnome_desktop_dep = dependency('gnome-desktop-3.0', version: '>= 3.34.2')
 
 session_deps = [
   gio_dep,
   glib_dep,
-  dependency('gnome-desktop-3.0', version: '>= 3.18.0'),
+  gnome_desktop_dep,
   dependency('json-glib-1.0', version: '>= 0.10')
 ]
 
@@ -171,6 +172,8 @@ config_h.set('ENABLE_SYSTEMD_SESSION', enable_systemd_session)
 config_h.set('ENABLE_SYSTEMD_JOURNAL', enable_systemd_journal)
 config_h.set('HAVE_CONSOLEKIT', enable_consolekit)
 config_h.set10('USE_SYSTEMD_SESSION', use_systemd_session)
+# Added in gnome-desktop 3.34.2/3.35.2
+config_h.set('HAVE_GNOME_SYSTEMD', cc.has_header('libgnome-desktop/gnome-systemd.h', dependencies: 
gnome_desktop_dep))
 
 configure_file(
   output: 'config.h',