1 /* IP forward control by sysctl function.
2 * Copyright (C) 1997, 1999 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GNU Zebra; see the file COPYING. If not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
24 #include "zebra/ipforward.h"
30 extern struct zebra_privs_t zserv_privs;
32 /* IPv4 forwarding control MIB. */
47 len = sizeof ipforwarding;
48 if (sysctl (mib, MIB_SIZ, &ipforwarding, &len, 0, 0) < 0)
50 zlog_warn ("Can't get ipforwarding value");
62 len = sizeof ipforwarding;
63 if (zserv_privs.change(ZPRIVS_RAISE))
64 zlog (NULL, LOG_ERR, "Can't raise privileges");
65 if (sysctl (mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0)
67 if (zserv_privs.change(ZPRIVS_LOWER))
68 zlog (NULL, LOG_ERR, "Can't lower privileges");
69 zlog_warn ("Can't set ipforwarding on");
72 if (zserv_privs.change(ZPRIVS_LOWER))
73 zlog (NULL, LOG_ERR, "Can't lower privileges");
83 len = sizeof ipforwarding;
84 if (zserv_privs.change(ZPRIVS_RAISE))
85 zlog (NULL, LOG_ERR, "Can't raise privileges");
86 if (sysctl (mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0)
88 if (zserv_privs.change(ZPRIVS_LOWER))
89 zlog (NULL, LOG_ERR, "Can't lower privileges");
90 zlog_warn ("Can't set ipforwarding on");
93 if (zserv_privs.change(ZPRIVS_LOWER))
94 zlog (NULL, LOG_ERR, "Can't lower privileges");
100 /* IPv6 forwarding control MIB. */
101 int mib_ipv6[MIB_SIZ] =
115 ipforward_ipv6 (void)
118 int ip6forwarding = 0;
120 len = sizeof ip6forwarding;
121 if (zserv_privs.change(ZPRIVS_RAISE))
122 zlog (NULL, LOG_ERR, "Can't raise privileges");
123 if (sysctl (mib_ipv6, MIB_SIZ, &ip6forwarding, &len, 0, 0) < 0)
125 if (zserv_privs.change(ZPRIVS_LOWER))
126 zlog (NULL, LOG_ERR, "Can't lower privileges");
127 zlog_warn ("can't get ip6forwarding value");
130 if (zserv_privs.change(ZPRIVS_LOWER))
131 zlog (NULL, LOG_ERR, "Can't lower privileges");
132 return ip6forwarding;
136 ipforward_ipv6_on (void)
139 int ip6forwarding = 1;
141 len = sizeof ip6forwarding;
142 if (zserv_privs.change(ZPRIVS_RAISE))
143 zlog (NULL, LOG_ERR, "Can't raise privileges");
144 if (sysctl (mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len) < 0)
146 if (zserv_privs.change(ZPRIVS_LOWER))
147 zlog (NULL, LOG_ERR, "Can't lower privileges");
148 zlog_warn ("can't get ip6forwarding value");
151 if (zserv_privs.change(ZPRIVS_LOWER))
152 zlog (NULL, LOG_ERR, "Can't lower privileges");
153 return ip6forwarding;
157 ipforward_ipv6_off (void)
160 int ip6forwarding = 0;
162 len = sizeof ip6forwarding;
163 if (zserv_privs.change(ZPRIVS_RAISE))
164 zlog (NULL, LOG_ERR, "Can't raise privileges");
165 if (sysctl (mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len) < 0)
167 if (zserv_privs.change(ZPRIVS_LOWER))
168 zlog (NULL, LOG_ERR, "Can't lower privileges");
169 zlog_warn ("can't get ip6forwarding value");
172 if (zserv_privs.change(ZPRIVS_LOWER))
173 zlog (NULL, LOG_ERR, "Can't lower privileges");
174 return ip6forwarding;
176 #endif /* HAVE_IPV6 */