pam_systemd: Properly check kdbus availability

This properly avoids setting DBUS_SESSION_BUS_ADDRESS if kdbus
is loaded (or built into the kernel) but not wanted.

diff --git a/src/login/pam_systemd.c b/src/login/pam_systemd.c
index 0ebdfdf19e587e394e0185a934814c9ee436a00e..dd192b90ce0b64a19046f6026488e93de11ddcf2 100644 (file)
--- a/src/login/pam_systemd.c
+++ b/src/login/pam_systemd.c
@@ -181,7 +181,7 @@ static int export_legacy_dbus_address(
         int r;
 
         /* skip export if kdbus is not active */
-        if (access("/sys/fs/kdbus", F_OK) < 0)
+        if (!is_kdbus_available())
                 return PAM_SUCCESS;
 
         if (asprintf(&s, KERNEL_USER_BUS_ADDRESS_FMT ";" UNIX_USER_BUS_ADDRESS_FMT, uid, runtime) < 0) {