ipforward_sysctl.c
上传用户:xiaozhuqw
上传日期:2009-11-15
资源大小:1338k
文件大小:3k
- /* IP forward control by sysctl function.
- * Copyright (C) 1997, 1999 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>
- #ifdef NRL
- #include <netinet6/in6.h>
- #endif /* NRL */
- #include "log.h"
- #define MIB_SIZ 4
- /* IPv4 forwarding control MIB. */
- int mib[MIB_SIZ] =
- {
- CTL_NET,
- PF_INET,
- IPPROTO_IP,
- IPCTL_FORWARDING
- };
- int
- ipforward ()
- {
- int len;
- int ipforwarding = 0;
- len = sizeof ipforwarding;
- if (sysctl (mib, MIB_SIZ, &ipforwarding, &len, 0, 0) < 0)
- {
- zlog_warn ("Can't get ipforwarding value");
- return -1;
- }
- return ipforwarding;
- }
- int
- ipforward_on ()
- {
- int len;
- int ipforwarding = 1;
- len = sizeof ipforwarding;
- if (sysctl (mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0)
- {
- zlog_warn ("Can't set ipforwarding on");
- return -1;
- }
- return ipforwarding;
- }
- int
- ipforward_off ()
- {
- int len;
- int ipforwarding = 0;
- len = sizeof ipforwarding;
- if (sysctl (mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0)
- {
- zlog_warn ("Can't set ipforwarding on");
- return -1;
- }
- return ipforwarding;
- }
- #ifdef HAVE_IPV6
- /* IPv6 forwarding control MIB. */
- int mib_ipv6[MIB_SIZ] =
- {
- CTL_NET,
- PF_INET6,
- #if defined(KAME) || (defined(__bsdi__) && _BSDI_VERSION >= 199802 ) || defined(NRL)
- IPPROTO_IPV6,
- IPV6CTL_FORWARDING
- #else /* NOT KAME */
- IPPROTO_IP,
- IP6CTL_FORWARDING
- #endif /* KAME */
- };
- int
- ipforward_ipv6 ()
- {
- int len;
- int ip6forwarding = 0;
- len = sizeof ip6forwarding;
- if (sysctl (mib_ipv6, MIB_SIZ, &ip6forwarding, &len, 0, 0) < 0)
- {
- zlog_warn ("can't get ip6forwarding value");
- return -1;
- }
- return ip6forwarding;
- }
- int
- ipforward_ipv6_on ()
- {
- int len;
- int ip6forwarding = 1;
- len = sizeof ip6forwarding;
- if (sysctl (mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len) < 0)
- {
- zlog_warn ("can't get ip6forwarding value");
- return -1;
- }
- return ip6forwarding;
- }
- int
- ipforward_ipv6_off ()
- {
- int len;
- int ip6forwarding = 0;
- len = sizeof ip6forwarding;
- if (sysctl (mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len) < 0)
- {
- zlog_warn ("can't get ip6forwarding value");
- return -1;
- }
- return ip6forwarding;
- }
- #endif /* HAVE_IPV6 */