From f4579ce704b9db0358b90c282da9536410a4df5a Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 7 Jul 2010 03:43:39 +0200
Subject: [PATCH] dbus: don't try to run AddMatch when connected to a private
 bus

---
 src/dbus-common.c |  9 +++++-
 src/dbus-common.h |  2 +-
 src/install.c     |  2 +-
 src/systemctl.c   | 73 ++++++++++++++++++++++++++---------------------
 4 files changed, 50 insertions(+), 36 deletions(-)

diff --git a/src/dbus-common.c b/src/dbus-common.c
index 504eefbbb..11d989d7c 100644
--- a/src/dbus-common.c
+++ b/src/dbus-common.c
@@ -54,7 +54,7 @@ int bus_check_peercred(DBusConnection *c) {
         return 1;
 }
 
-int bus_connect(DBusBusType t, DBusConnection **_bus, DBusError *error) {
+int bus_connect(DBusBusType t, DBusConnection **_bus, bool *private, DBusError *error) {
         DBusConnection *bus;
 
         assert(_bus);
@@ -71,9 +71,16 @@ int bus_connect(DBusBusType t, DBusConnection **_bus, DBusError *error) {
                         dbus_set_error_const(error, DBUS_ERROR_ACCESS_DENIED, "Failed to verify owner of bus.");
                         return -EACCES;
                 }
+
+                if (private)
+                        *private = true;
+
         } else {
                 if (!(bus = dbus_bus_get(t, error)))
                         return -EIO;
+
+                if (private)
+                        *private = false;
         }
 
         dbus_connection_set_exit_on_disconnect(bus, FALSE);
diff --git a/src/dbus-common.h b/src/dbus-common.h
index f355de14f..b28755fc7 100644
--- a/src/dbus-common.h
+++ b/src/dbus-common.h
@@ -26,6 +26,6 @@
 
 int bus_check_peercred(DBusConnection *c);
 
-int bus_connect(DBusBusType t, DBusConnection **_bus, DBusError *error);
+int bus_connect(DBusBusType t, DBusConnection **_bus, bool *private_bus, DBusError *error);
 
 #endif
diff --git a/src/install.c b/src/install.c
index 3bf5761b3..3b70bd1d3 100644
--- a/src/install.c
+++ b/src/install.c
@@ -791,7 +791,7 @@ static int do_run(void) {
                 return 0;
         }
 
-        if ((r = bus_connect(arg_where == WHERE_SESSION ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &bus, &error)) < 0) {
+        if ((r = bus_connect(arg_where == WHERE_SESSION ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &bus, NULL, &error)) < 0) {
                 log_error("Failed to get D-Bus connection: %s", error.message);
                 goto finish;
         }
diff --git a/src/systemctl.c b/src/systemctl.c
index 5c91c325c..081f34bcf 100644
--- a/src/systemctl.c
+++ b/src/systemctl.c
@@ -75,6 +75,8 @@ enum action {
         _ACTION_MAX
 } arg_action = ACTION_SYSTEMCTL;
 
+static bool private_bus = false;
+
 static bool error_is_no_service(DBusError *error) {
 
         assert(error);
@@ -561,6 +563,9 @@ static int enable_wait_for_jobs(DBusConnection *bus) {
 
         assert(bus);
 
+        if (private_bus)
+                return 0;
+
         dbus_error_init(&error);
         dbus_bus_add_match(bus,
                            "type='signal',"
@@ -1849,43 +1854,45 @@ static int monitor(DBusConnection *bus, char **args, unsigned n) {
 
         dbus_error_init(&error);
 
-        dbus_bus_add_match(bus,
-                           "type='signal',"
-                           "sender='org.freedesktop.systemd1',"
-                           "interface='org.freedesktop.systemd1.Manager',"
-                           "path='/org/freedesktop/systemd1'",
-                           &error);
+        if (!private_bus) {
+                dbus_bus_add_match(bus,
+                                   "type='signal',"
+                                   "sender='org.freedesktop.systemd1',"
+                                   "interface='org.freedesktop.systemd1.Manager',"
+                                   "path='/org/freedesktop/systemd1'",
+                                   &error);
 
-        if (dbus_error_is_set(&error)) {
-                log_error("Failed to add match: %s", error.message);
-                r = -EIO;
-                goto finish;
-        }
+                if (dbus_error_is_set(&error)) {
+                        log_error("Failed to add match: %s", error.message);
+                        r = -EIO;
+                        goto finish;
+                }
 
-        dbus_bus_add_match(bus,
-                           "type='signal',"
-                           "sender='org.freedesktop.systemd1',"
-                           "interface='org.freedesktop.systemd1.Unit',"
-                           "member='Changed'",
-                           &error);
+                dbus_bus_add_match(bus,
+                                   "type='signal',"
+                                   "sender='org.freedesktop.systemd1',"
+                                   "interface='org.freedesktop.systemd1.Unit',"
+                                   "member='Changed'",
+                                   &error);
 
-        if (dbus_error_is_set(&error)) {
-                log_error("Failed to add match: %s", error.message);
-                r = -EIO;
-                goto finish;
-        }
+                if (dbus_error_is_set(&error)) {
+                        log_error("Failed to add match: %s", error.message);
+                        r = -EIO;
+                        goto finish;
+                }
 
-        dbus_bus_add_match(bus,
-                           "type='signal',"
-                           "sender='org.freedesktop.systemd1',"
-                           "interface='org.freedesktop.systemd1.Job',"
-                           "member='Changed'",
-                           &error);
+                dbus_bus_add_match(bus,
+                                   "type='signal',"
+                                   "sender='org.freedesktop.systemd1',"
+                                   "interface='org.freedesktop.systemd1.Job',"
+                                   "member='Changed'",
+                                   &error);
 
-        if (dbus_error_is_set(&error)) {
-                log_error("Failed to add match: %s", error.message);
-                r = -EIO;
-                goto finish;
+                if (dbus_error_is_set(&error)) {
+                        log_error("Failed to add match: %s", error.message);
+                        r = -EIO;
+                        goto finish;
+                }
         }
 
         if (!dbus_connection_add_filter(bus, monitor_filter, NULL, NULL)) {
@@ -3286,7 +3293,7 @@ int main(int argc, char*argv[]) {
                 goto finish;
         }
 
-        bus_connect(arg_session ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &bus, &error);
+        bus_connect(arg_session ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &bus, &private_bus, &error);
 
         switch (arg_action) {
 
-- 
2.30.2