From 2c7cac91ed6e7db0f6937923d2b57f97dbdbc337 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:53:30 +0200 Subject: Adding upstream version 8.4.4. Signed-off-by: Daniel Baumann --- zebra/ipforward_sysctl.c | 144 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 zebra/ipforward_sysctl.c (limited to 'zebra/ipforward_sysctl.c') diff --git a/zebra/ipforward_sysctl.c b/zebra/ipforward_sysctl.c new file mode 100644 index 0000000..0015018 --- /dev/null +++ b/zebra/ipforward_sysctl.c @@ -0,0 +1,144 @@ +/* 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 this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include + +#if !defined(GNU_LINUX) + +#include "privs.h" +#include "zebra/ipforward.h" +#include "zebra/zebra_errors.h" + +#include "log.h" +#include "lib_errors.h" + +#define MIB_SIZ 4 + +extern struct zebra_privs_t zserv_privs; + +/* IPv4 forwarding control MIB. */ +int mib[MIB_SIZ] = {CTL_NET, PF_INET, IPPROTO_IP, IPCTL_FORWARDING}; + +int ipforward(void) +{ + size_t len; + int ipforwarding = 0; + + len = sizeof(ipforwarding); + if (sysctl(mib, MIB_SIZ, &ipforwarding, &len, 0, 0) < 0) { + flog_err_sys(EC_LIB_SYSTEM_CALL, + "Can't get ipforwarding value"); + return -1; + } + return ipforwarding; +} + +int ipforward_on(void) +{ + size_t len; + int ipforwarding = 1; + + len = sizeof(ipforwarding); + frr_with_privs(&zserv_privs) { + if (sysctl(mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0) { + flog_err_sys(EC_LIB_SYSTEM_CALL, + "Can't set ipforwarding on"); + return -1; + } + } + return ipforwarding; +} + +int ipforward_off(void) +{ + size_t len; + int ipforwarding = 0; + + len = sizeof(ipforwarding); + frr_with_privs(&zserv_privs) { + if (sysctl(mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0) { + flog_err_sys(EC_LIB_SYSTEM_CALL, + "Can't set ipforwarding on"); + return -1; + } + } + return ipforwarding; +} + +/* IPv6 forwarding control MIB. */ +int mib_ipv6[MIB_SIZ] = {CTL_NET, PF_INET6, +#if defined(BSD_V6_SYSCTL) + IPPROTO_IPV6, IPV6CTL_FORWARDING +#else /* NOT BSD_V6_SYSCTL */ + IPPROTO_IP, IP6CTL_FORWARDING +#endif /* BSD_V6_SYSCTL */ +}; + +int ipforward_ipv6(void) +{ + size_t len; + int ip6forwarding = 0; + + len = sizeof(ip6forwarding); + frr_with_privs(&zserv_privs) { + if (sysctl(mib_ipv6, MIB_SIZ, &ip6forwarding, &len, 0, 0) < 0) { + flog_err_sys(EC_LIB_SYSTEM_CALL, + "can't get ip6forwarding value"); + return -1; + } + } + return ip6forwarding; +} + +int ipforward_ipv6_on(void) +{ + size_t len; + int ip6forwarding = 1; + + len = sizeof(ip6forwarding); + frr_with_privs(&zserv_privs) { + if (sysctl(mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len) + < 0) { + flog_err_sys(EC_LIB_SYSTEM_CALL, + "can't get ip6forwarding value"); + return -1; + } + } + return ip6forwarding; +} + +int ipforward_ipv6_off(void) +{ + size_t len; + int ip6forwarding = 0; + + len = sizeof(ip6forwarding); + frr_with_privs(&zserv_privs) { + if (sysctl(mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len) + < 0) { + flog_err_sys(EC_LIB_SYSTEM_CALL, + "can't get ip6forwarding value"); + return -1; + } + } + return ip6forwarding; +} + +#endif /* !defined(GNU_LINUX) */ -- cgit v1.2.3