--- /dev/null
+++ Libc/Libc-1725.40.4/string/NetBSD/memset_s.c
@@ -0,0 +1,71 @@
+/*	$NetBSD$ */
+
+/*-
+ * Copyright (c) 2012 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Alan Barrett
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * ISO/IEC 9899:2011 section K.3.7.4.1 The memset_s function
+ */
+
+#include <sys/cdefs.h>
+
+__RCSID("$NetBSD$");
+
+#define __STDC_WANT_LIB_EXT1__ 1
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+
+#undef memset_s /* in case it was defined as a macro */
+#undef memset   /* in case it was defined as a macro */
+
+errno_t
+memset_s(void *s, rsize_t smax, int c, rsize_t n)
+{
+	errno_t err = 0;
+
+	if (s == NULL)
+		return EINVAL;
+	if (smax > RSIZE_MAX)
+		return E2BIG;
+
+	if (n > RSIZE_MAX) {
+		err = E2BIG;
+		n = smax;
+	}
+
+	if (n > smax) {
+		err = EOVERFLOW;
+		n = smax;
+	}
+
+	memset(s, c, n);
+
+	return err;
+}