From 172cef2963874308c935be17c7ed9856d1a7f78f Mon Sep 17 00:00:00 2001
From: Bill Nottingham <notting@redhat.com>
Date: Wed, 7 Mar 2012 16:00:23 -0500
Subject: [PATCH] Add a CheckUserAuthorization option for using
 libsystemd-login.

---
 os/utils.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/os/utils.c b/os/utils.c
index 6461ed5..23acb2f 100644
--- a/os/utils.c
+++ b/os/utils.c
@@ -1736,6 +1736,10 @@ CheckUserParameters(int argc, char **argv, char **envp)
 #include <pwd.h>
 #endif /* USE_PAM */
 
+#ifdef USE_SYSTEMD
+#include <systemd/sd-login.h>
+#endif /* USE_SYSTEMD */
+
 void
 CheckUserAuthorization(void)
 {
@@ -1777,6 +1781,16 @@ CheckUserAuthorization(void)
 	pam_end(pamh, PAM_SUCCESS);
     }
 #endif
+#ifdef USE_SYSTEMD
+    int uid;
+
+    uid = getuid();
+    if (uid == 0)
+        return;
+    if (sd_uid_get_seats(uid, 1, NULL) <= 0) {
+        FatalError("Cannot start X server. User is not on an active seat.\n");
+    }
+#endif /* USE_SYSTEMD */
 }
 
 /*
-- 
1.7.7.6