Initial revision
diff --git a/zebra/rtread_sysctl.c b/zebra/rtread_sysctl.c
new file mode 100644
index 0000000..970c0aa
--- /dev/null
+++ b/zebra/rtread_sysctl.c
@@ -0,0 +1,75 @@
+/*
+ * Kernel routing table read by sysctl function.
+ * Copyright (C) 1997, 98 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra 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.
+ *
+ * GNU Zebra 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 GNU Zebra; see the file COPYING. If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <zebra.h>
+
+#include "memory.h"
+#include "log.h"
+
+/* Kernel routing table read up by sysctl function. */
+int
+route_read ()
+{
+ caddr_t buf, end, ref;
+ size_t bufsiz;
+ struct rt_msghdr *rtm;
+ void rtm_read (struct rt_msghdr *);
+
+#define MIBSIZ 6
+ int mib[MIBSIZ] =
+ {
+ CTL_NET,
+ PF_ROUTE,
+ 0,
+ 0,
+ NET_RT_DUMP,
+ 0
+ };
+
+ /* Get buffer size. */
+ if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
+ {
+ zlog_warn ("sysctl fail: %s", strerror (errno));
+ return -1;
+ }
+
+ /* Allocate buffer. */
+ ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
+
+ /* Read routing table information by calling sysctl(). */
+ if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
+ {
+ zlog_warn ("sysctl() fail by %s", strerror (errno));
+ return -1;
+ }
+
+ for (end = buf + bufsiz; buf < end; buf += rtm->rtm_msglen)
+ {
+ rtm = (struct rt_msghdr *) buf;
+ rtm_read (rtm);
+ }
+
+ /* Free buffer. */
+ XFREE (MTYPE_TMP, ref);
+
+ return 0;
+}