Initial revision
diff --git a/zebra/if_sysctl.c b/zebra/if_sysctl.c
new file mode 100644
index 0000000..1441dfc
--- /dev/null
+++ b/zebra/if_sysctl.c
@@ -0,0 +1,148 @@
+/*
+ * Get interface's address and mask information 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 "if.h"
+#include "sockunion.h"
+#include "prefix.h"
+#include "connected.h"
+#include "memory.h"
+#include "ioctl.h"
+#include "log.h"
+
+int
+ifstat_update_sysctl ()
+{
+ caddr_t ref, buf, end;
+ size_t bufsiz;
+ struct if_msghdr *ifm;
+ struct interface *ifp;
+
+#define MIBSIZ 6
+ int mib[MIBSIZ] =
+ {
+ CTL_NET,
+ PF_ROUTE,
+ 0,
+ 0, /* AF_INET & AF_INET6 */
+ NET_RT_IFLIST,
+ 0
+ };
+
+ /* Query buffer size. */
+ if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
+ {
+ zlog_warn ("sysctl() error by %s", strerror (errno));
+ return -1;
+ }
+
+ /* We free this memory at the end of this function. */
+ ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
+
+ /* Fetch interface informations into allocated buffer. */
+ if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
+ {
+ zlog (NULL, LOG_WARNING, "sysctl error by %s", strerror (errno));
+ return -1;
+ }
+
+ /* Parse both interfaces and addresses. */
+ for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
+ {
+ ifm = (struct if_msghdr *) buf;
+ if (ifm->ifm_type == RTM_IFINFO)
+ {
+ ifp = if_lookup_by_index (ifm->ifm_index);
+ if (ifp)
+ ifp->stats = ifm->ifm_data;
+ }
+ }
+
+ /* Free sysctl buffer. */
+ XFREE (MTYPE_TMP, ref);
+
+ return 0;
+}
+
+/* Interface listing up function using sysctl(). */
+void
+interface_list ()
+{
+ caddr_t ref, buf, end;
+ size_t bufsiz;
+ struct if_msghdr *ifm;
+ int ifm_read (struct if_msghdr *);
+ int ifam_read (struct ifa_msghdr *);
+
+#define MIBSIZ 6
+ int mib[MIBSIZ] =
+ {
+ CTL_NET,
+ PF_ROUTE,
+ 0,
+ 0, /* AF_INET & AF_INET6 */
+ NET_RT_IFLIST,
+ 0
+ };
+
+ /* Query buffer size. */
+ if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
+ {
+ zlog (NULL, LOG_WARNING, "sysctl() error by %s", strerror (errno));
+ return;
+ }
+
+ /* We free this memory at the end of this function. */
+ ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
+
+ /* Fetch interface informations into allocated buffer. */
+ if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
+ {
+ zlog (NULL, LOG_WARNING, "sysctl error by %s", strerror (errno));
+ return;
+ }
+
+ /* Parse both interfaces and addresses. */
+ for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
+ {
+ ifm = (struct if_msghdr *) buf;
+
+ switch (ifm->ifm_type)
+ {
+ case RTM_IFINFO:
+ ifm_read (ifm);
+ break;
+ case RTM_NEWADDR:
+ ifam_read ((struct ifa_msghdr *) ifm);
+ break;
+ default:
+ zlog_info ("interfaces_list(): unexpected message type");
+ XFREE (MTYPE_TMP, ref);
+ return;
+ break;
+ }
+ }
+
+ /* Free sysctl buffer. */
+ XFREE (MTYPE_TMP, ref);
+}