new file mode 100644
--- /dev/null
+++ b/lib/strerror.c
@@ -0,0 +1,37 @@
+/* strerror.c --- ANSI C compatible system error routine
+
+   Copyright (C) 1986, 1988, 1989, 1991, 2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#if 0
+# include <stdio.h>
+#endif
+
+extern int sys_nerr;
+extern char *sys_errlist[];
+
+char *
+strerror(n)
+int n;
+{
+	static char mesg[30];
+
+	if (n < 0 || n >= sys_nerr) {
+		sprintf(mesg, "Unknown error (%d)", n);
+		return mesg;
+	} else
+		return sys_errlist[n];
+}