add dbus checks

1 files changed, 11 insertions, 0 deletions

diff --git a/logind.c b/logind.c
index 6388df1..a2e9add 100644
--- a/logind.c
+++ b/logind.c
@@ -48,6 +48,8 @@ int logind_init(void)
 
 int logind_dbus_fd(void)
 {
+    if (!logind_dbus)
+        return -1;
     return sd_bus_get_fd(logind_dbus);
 }
 
@@ -56,6 +58,9 @@ void logind_dbus_input(void)
     sd_bus_message *m = NULL;
     int ret;
 
+    if (!logind_dbus)
+        return;
+
     do {
         ret = sd_bus_process(logind_dbus, &m);
         fprintf(stderr, "%s: path %s\n", __func__,
@@ -70,6 +75,9 @@ int logind_take_control(void)
     sd_bus_message *m = NULL;
     int r;
 
+    if (!logind_dbus)
+        return -1;
+
     r = sd_bus_call_method(logind_dbus,
                            "org.freedesktop.login1",
                            "/org/freedesktop/login1/session/self",
@@ -94,6 +102,9 @@ int logind_release_control(void)
     sd_bus_message *m = NULL;
     int r;
 
+    if (!logind_dbus)
+        return -1;
+
     r = sd_bus_call_method(logind_dbus,
                            "org.freedesktop.login1",
                            "/org/freedesktop/login1/session/self",