1 files changed, 37 insertions, 0 deletions
diff --git a/contrib/cleanup.h b/contrib/cleanup.h
new file mode 100644
index 0000000..55843f1
--- /dev/null
+++ b/contrib/cleanup.h
@@ -0,0 +1,37 @@
+/*  Copyright (C) 2015-2017 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+/**
+ * Cleanup attributes.
+ * @cond internal
+ */
+#pragma once
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#define auto_free __attribute__((cleanup(_cleanup_free)))
+static inline void _cleanup_free(char **p) {
+	free(*p);
+}
+#define auto_close __attribute__((cleanup(_cleanup_close)))
+static inline void _cleanup_close(int *p) {
+	if (*p > 0) close(*p);
+}
+#define auto_fclose __attribute__((cleanup(_cleanup_fclose)))
+static inline void _cleanup_fclose(FILE **p) {
+	if (*p) fclose(*p);
+}
+/* @endcond */