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diff --git a/src/libudev/strxcpyx.h b/src/libudev/strxcpyx.h
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+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of eudev from systemd.
+
+ Copyright 2013 Kay Sievers
+
+ 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 <stdarg.h>
+#include <stdbool.h>
+
+size_t strpcpy(char **dest, size_t size, const char *src);
+size_t strpcpyf(char **dest, size_t size, const char *src, ...) __attribute__((format(printf, 3, 4)));
+size_t strpcpyl(char **dest, size_t size, const char *src, ...) __attribute__((sentinel));
+size_t strscpy(char *dest, size_t size, const char *src);
+size_t strscpyl(char *dest, size_t size, const char *src, ...) __attribute__((sentinel));