pam: skip DBUS_SESSION_BUS_ADDRESS export when kdbus is not active

diff --git a/src/login/pam-module.c b/src/login/pam-module.c
index e76fef8001586cc02d7673b08d4ae752be3f2011..7400734fdc975f0c83eeb3dbc240c87cb66f7166 100644 (file)
--- a/src/login/pam-module.c
+++ b/src/login/pam-module.c
@@ -173,6 +173,10 @@ static int export_legacy_dbus_address(
         _cleanup_free_ char *s = NULL;
         int r;
 
         _cleanup_free_ char *s = NULL;
         int r;
 

+        /* skip export if kdbus is not active */
+        if (access("/dev/kdbus", F_OK) < 0)
+                return PAM_SUCCESS;
+

         if (asprintf(&s, KERNEL_USER_BUS_FMT ";" UNIX_USER_BUS_FMT,
                      (unsigned long) uid, runtime) < 0) {
                 pam_syslog(handle, LOG_ERR, "Failed to set bus variable.");
         if (asprintf(&s, KERNEL_USER_BUS_FMT ";" UNIX_USER_BUS_FMT,
                      (unsigned long) uid, runtime) < 0) {
                 pam_syslog(handle, LOG_ERR, "Failed to set bus variable.");