diff --git a/libtar/strrstr.c b/libtar/strrstr.c
new file mode 100644
index 0000000..097ef91
--- /dev/null
+++ b/libtar/strrstr.c
@@ -0,0 +1,40 @@
+/*
+**  Copyright 1998-2002 University of Illinois Board of Trustees
+**  Copyright 1998-2002 Mark D. Roth
+**  All rights reserved.
+**
+**  strrstr.c - strrstr() function for compatibility library
+**
+**  Mark D. Roth <roth@uiuc.edu>
+**  Campus Information Technologies and Educational Services
+**  University of Illinois at Urbana-Champaign
+*/
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#include <string.h>
+
+
+/*
+** find the last occurrance of find in string
+*/
+char *
+strrstr(char *string, char *find)
+{
+	size_t stringlen, findlen;
+	char *cp;
+
+	findlen = strlen(find);
+	stringlen = strlen(string);
+	if (findlen > stringlen)
+		return NULL;
+
+	for (cp = string + stringlen - findlen; cp >= string; cp--)
+		if (strncmp(cp, find, findlen) == 0)
+			return cp;
+
+	return NULL;
+}
+
+