2 * "security" table for IPv6
4 * This is for use by Mandatory Access Control (MAC) security models,
5 * which need to be able to manage security policy in separate context
8 * Based on iptable_mangle.c
10 * Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
11 * Copyright (C) 2000-2004 Netfilter Core Team <coreteam <at> netfilter.org>
12 * Copyright (C) 2008 Red Hat, Inc., James Morris <jmorris <at> redhat.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
18 #include <linux/module.h>
19 #include <linux/netfilter_ipv6/ip6_tables.h>
20 #include <linux/slab.h>
22 MODULE_LICENSE("GPL");
23 MODULE_AUTHOR("James Morris <jmorris <at> redhat.com>");
24 MODULE_DESCRIPTION("ip6tables security table, for MAC rules");
26 #define SECURITY_VALID_HOOKS (1 << NF_INET_LOCAL_IN) | \
27 (1 << NF_INET_FORWARD) | \
28 (1 << NF_INET_LOCAL_OUT)
30 static int __net_init
ip6table_security_table_init(struct net
*net
);
32 static const struct xt_table security_table
= {
34 .valid_hooks
= SECURITY_VALID_HOOKS
,
37 .priority
= NF_IP6_PRI_SECURITY
,
38 .table_init
= ip6table_security_table_init
,
42 ip6table_security_hook(void *priv
, struct sk_buff
*skb
,
43 const struct nf_hook_state
*state
)
45 return ip6t_do_table(skb
, state
, state
->net
->ipv6
.ip6table_security
);
48 static struct nf_hook_ops
*sectbl_ops __read_mostly
;
50 static int __net_init
ip6table_security_table_init(struct net
*net
)
52 struct ip6t_replace
*repl
;
55 if (net
->ipv6
.ip6table_security
)
58 repl
= ip6t_alloc_initial_table(&security_table
);
61 ret
= ip6t_register_table(net
, &security_table
, repl
, sectbl_ops
,
62 &net
->ipv6
.ip6table_security
);
67 static void __net_exit
ip6table_security_net_exit(struct net
*net
)
69 if (!net
->ipv6
.ip6table_security
)
71 ip6t_unregister_table(net
, net
->ipv6
.ip6table_security
, sectbl_ops
);
72 net
->ipv6
.ip6table_security
= NULL
;
75 static struct pernet_operations ip6table_security_net_ops
= {
76 .exit
= ip6table_security_net_exit
,
79 static int __init
ip6table_security_init(void)
83 sectbl_ops
= xt_hook_ops_alloc(&security_table
, ip6table_security_hook
);
84 if (IS_ERR(sectbl_ops
))
85 return PTR_ERR(sectbl_ops
);
87 ret
= register_pernet_subsys(&ip6table_security_net_ops
);
93 ret
= ip6table_security_table_init(&init_net
);
95 unregister_pernet_subsys(&ip6table_security_net_ops
);
101 static void __exit
ip6table_security_fini(void)
103 unregister_pernet_subsys(&ip6table_security_net_ops
);
107 module_init(ip6table_security_init
);
108 module_exit(ip6table_security_fini
);