tree-wide: drop 'This file is part of systemd' blurb

[elogind.git] / src / basic / errno-list.h

diff --git a/src/basic/errno-list.h b/src/basic/errno-list.h
index e6e0520d6c4f043d8d3ac828e086c8123db53f33..c549b055de2c38d303f2af59cd2c1304b7cafb36 100644 (file)
--- a/src/basic/errno-list.h
+++ b/src/basic/errno-list.h
@@ -1,29 +1,19 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
 /***
-  This file is part of systemd.
-
   Copyright 2013 Lennart Poettering
-
-  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>
+/*
+ * MAX_ERRNO is defined as 4095 in linux/err.h
+ * We use the same value here.
+ */
+#define ERRNO_MAX 4095
+
 const char *errno_to_name(int id);
 int errno_from_name(const char *name);
-
-#if 0 /// UNNEEDED by elogind
-int errno_max(void);
-#endif // 0
+static inline bool errno_is_valid(int n) {
+        return n > 0 && n <= ERRNO_MAX;
+}