From 8ec2d93a4fc77d6539ca83fb53d53ca26735088c Mon Sep 17 00:00:00 2001
From: Simon McVittie <smcv@collabora.com>
Date: Mon, 15 Jan 2018 15:15:52 +0000
Subject: [PATCH 2/4] bus: Notify systemd when we are ready

Signed-off-by: Simon McVittie <smcv@collabora.com>
---
 bus/bus.c                        |  2 ++
 bus/dbus.service.in              |  1 +
 bus/systemd-user/dbus.service.in |  1 +
 dbus/dbus-sysdeps-util-unix.c    | 12 ++++++++++++
 dbus/dbus-sysdeps-util-win.c     |  5 +++++
 dbus/dbus-sysdeps.h              |  2 ++
 6 files changed, 23 insertions(+)

diff --git a/bus/bus.c b/bus/bus.c
index a6f8db47..134d7e1e 100644
--- a/bus/bus.c
+++ b/bus/bus.c
@@ -1025,6 +1025,8 @@ bus_context_new (const DBusString *config_file,
       goto failed;
     }
 
+  _dbus_daemon_report_ready ();
+
   if (parser != NULL)
     {
       bus_config_parser_unref (parser);
diff --git a/bus/dbus.service.in b/bus/dbus.service.in
index ca0b7e96..3db9b0b1 100644
--- a/bus/dbus.service.in
+++ b/bus/dbus.service.in
@@ -4,6 +4,7 @@ Documentation=man:dbus-daemon(1)
 Requires=dbus.socket
 
 [Service]
+Type=notify
 ExecStart=@EXPANDED_BINDIR@/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
 ExecReload=@EXPANDED_BINDIR@/dbus-send --print-reply --system --type=method_call --dest=org.freedesktop.DBus / org.freedesktop.DBus.ReloadConfig
 OOMScoreAdjust=-900
diff --git a/bus/systemd-user/dbus.service.in b/bus/systemd-user/dbus.service.in
index 7ceffbee..6ac32a49 100644
--- a/bus/systemd-user/dbus.service.in
+++ b/bus/systemd-user/dbus.service.in
@@ -4,5 +4,6 @@ Documentation=man:dbus-daemon(1)
 Requires=dbus.socket
 
 [Service]
+Type=notify
 ExecStart=@EXPANDED_BINDIR@/dbus-daemon --session --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
 ExecReload=@EXPANDED_BINDIR@/dbus-send --print-reply --session --type=method_call --dest=org.freedesktop.DBus / org.freedesktop.DBus.ReloadConfig
diff --git a/dbus/dbus-sysdeps-util-unix.c b/dbus/dbus-sysdeps-util-unix.c
index b841bf63..838cd932 100644
--- a/dbus/dbus-sysdeps-util-unix.c
+++ b/dbus/dbus-sysdeps-util-unix.c
@@ -1519,3 +1519,15 @@ _dbus_get_session_config_file (DBusString *str)
 
   return _dbus_string_append (str, DBUS_SESSION_CONFIG_FILE);
 }
+
+/**
+ * Report to a service manager that the daemon calling this function is
+ * ready for use. This is currently only implemented for systemd.
+ */
+void
+_dbus_daemon_report_ready (void)
+{
+#ifdef HAVE_SYSTEMD
+  sd_notify (0, "READY=1");
+#endif
+}
diff --git a/dbus/dbus-sysdeps-util-win.c b/dbus/dbus-sysdeps-util-win.c
index 1ef4ae6c..f613130e 100644
--- a/dbus/dbus-sysdeps-util-win.c
+++ b/dbus/dbus-sysdeps-util-win.c
@@ -1654,3 +1654,8 @@ _dbus_get_session_config_file (DBusString *str)
 
   return _dbus_get_config_file_name(str, "session.conf");
 }
+
+void
+_dbus_daemon_report_ready (void)
+{
+}
diff --git a/dbus/dbus-sysdeps.h b/dbus/dbus-sysdeps.h
index b9b0c440..b2943906 100644
--- a/dbus/dbus-sysdeps.h
+++ b/dbus/dbus-sysdeps.h
@@ -687,6 +687,8 @@ dbus_bool_t     _dbus_rlimit_restore_fd_limit              (DBusRLimit   *saved,
                                                             DBusError    *error);
 void            _dbus_rlimit_free                          (DBusRLimit   *lim);
 
+void            _dbus_daemon_report_ready                  (void);
+
 /** @} */
 
 DBUS_END_DECLS
-- 
2.15.1