1 // SPDX-License-Identifier: GPL-2.0-only
3 * "security" table for IPv6
5 * This is for use by Mandatory Access Control (MAC) security models,
6 * which need to be able to manage security policy in separate context
9 * Based on iptable_mangle.c
11 * Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
12 * Copyright (C) 2000-2004 Netfilter Core Team <coreteam <at> netfilter.org>
13 * Copyright (C) 2008 Red Hat, Inc., James Morris <jmorris <at> redhat.com>
15 #include <linux/module.h>
16 #include <linux/netfilter_ipv6/ip6_tables.h>
17 #include <linux/slab.h>
19 MODULE_LICENSE("GPL");
20 MODULE_AUTHOR("James Morris <jmorris <at> redhat.com>");
21 MODULE_DESCRIPTION("ip6tables security table, for MAC rules");
23 #define SECURITY_VALID_HOOKS (1 << NF_INET_LOCAL_IN) | \
24 (1 << NF_INET_FORWARD) | \
25 (1 << NF_INET_LOCAL_OUT)
27 static const struct xt_table security_table = {
29 .valid_hooks = SECURITY_VALID_HOOKS,
32 .priority = NF_IP6_PRI_SECURITY,
35 static struct nf_hook_ops *sectbl_ops __read_mostly;
37 static int ip6table_security_table_init(struct net *net)
39 struct ip6t_replace *repl;
42 repl = ip6t_alloc_initial_table(&security_table);
45 ret = ip6t_register_table(net, &security_table, repl, sectbl_ops);
50 static void __net_exit ip6table_security_net_pre_exit(struct net *net)
52 ip6t_unregister_table_pre_exit(net, "security");
55 static void __net_exit ip6table_security_net_exit(struct net *net)
57 ip6t_unregister_table_exit(net, "security");
60 static struct pernet_operations ip6table_security_net_ops = {
61 .pre_exit = ip6table_security_net_pre_exit,
62 .exit = ip6table_security_net_exit,
65 static int __init ip6table_security_init(void)
67 int ret = xt_register_template(&security_table,
68 ip6table_security_table_init);
73 sectbl_ops = xt_hook_ops_alloc(&security_table, ip6t_do_table);
74 if (IS_ERR(sectbl_ops)) {
75 xt_unregister_template(&security_table);
76 return PTR_ERR(sectbl_ops);
79 ret = register_pernet_subsys(&ip6table_security_net_ops);
82 xt_unregister_template(&security_table);
89 static void __exit ip6table_security_fini(void)
91 unregister_pernet_subsys(&ip6table_security_net_ops);
92 xt_unregister_template(&security_table);
96 module_init(ip6table_security_init);
97 module_exit(ip6table_security_fini);