--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/lib/libc/port/gen/strndup.c	Thu Aug 12 14:55:22 2010 -0700
@@ -0,0 +1,44 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#include "lint.h"
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+/*
+ * Create a copy of string s, but only duplicate the first n bytes.
+ * Return NULL if the new string can't be allocated.
+ */
+char *
+strndup(const char *s1, size_t n)
+{
+	char *s2;
+
+	n = strnlen(s1, n);
+	if ((s2 = malloc(n + 1)) != NULL)
+		(void) strlcpy(s2, s1, n + 1);
+	return (s2);
+}