2 files changed, 64 insertions, 0 deletions
diff --git a/src/shared/smack-util.c b/src/shared/smack-util.c
new file mode 100644
index 0000000000..a73eaac6de
--- /dev/null
+++ b/src/shared/smack-util.c
@@ -0,0 +1,36 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Intel Corporation
+
+  Author: Auke Kok <auke-jan.h.kok@intel.com>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "smack-util.h"
+
+#include <unistd.h>
+
+static int use_smack_cached = -1;
+
+bool use_smack(void) {
+
+        if (use_smack_cached < 0)
+                use_smack_cached = (access("/sys/fs/smackfs", F_OK) >= 0);
+
+        return use_smack_cached;
+}
diff --git a/src/shared/smack-util.h b/src/shared/smack-util.h
new file mode 100644
index 0000000000..7b950ea0cb
--- /dev/null
+++ b/src/shared/smack-util.h
@@ -0,0 +1,28 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Intel Corporation
+
+  Author: Auke Kok <auke-jan.h.kok@intel.com>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+
+bool use_smack(void);