Initial revision

1 files changed, 75 insertions, 0 deletions

diff --git a/zebra/rtread_sysctl.c b/zebra/rtread_sysctl.c
new file mode 100644
index 00000000..970c0aa1
--- /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;
+}