--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libc/strncat.c	Fri Oct 28 22:20:26 2016 +0000
@@ -0,0 +1,24 @@
+/*
+ * Concatenate s2 on the end of s1.  S1's space must be large enough.
+ * At most n characters are moved.
+ * Return s1.
+ */
+
+char *
+strncat(s1, s2, n)
+	register char *s1, *s2;
+	register n;
+{
+	register char *os1;
+
+	os1 = s1;
+	while (*s1++)
+		;
+	--s1;
+	while (*s1++ = *s2++)
+		if (--n < 0) {
+			*--s1 = '\0';
+			break;
+		}
+	return(os1);
+}