securebits-util: add secure_bits_{from_string,to_string_alloc}()

src/basic/securebits-util.h

@@ -0,0 +1,28 @@
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2017 Yu Watanabe
+
+  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 "securebits.h"
+
+int secure_bits_to_string_alloc(int i, char **s);
+int secure_bits_from_string(const char *s);
+static inline bool secure_bits_is_valid(int i) {
+        return ((SECURE_ALL_BITS | SECURE_ALL_LOCKS) & i) == i;
+}