mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Florian Westphal](/assets/img/avatar_default.png)
This is possible now that the xt_table structure is passed via *priv. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* "security" table for IPv6
|
|
*
|
|
* This is for use by Mandatory Access Control (MAC) security models,
|
|
* which need to be able to manage security policy in separate context
|
|
* to DAC.
|
|
*
|
|
* Based on iptable_mangle.c
|
|
*
|
|
* Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
|
|
* Copyright (C) 2000-2004 Netfilter Core Team <coreteam <at> netfilter.org>
|
|
* Copyright (C) 2008 Red Hat, Inc., James Morris <jmorris <at> redhat.com>
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/netfilter_ipv6/ip6_tables.h>
|
|
#include <linux/slab.h>
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("James Morris <jmorris <at> redhat.com>");
|
|
MODULE_DESCRIPTION("ip6tables security table, for MAC rules");
|
|
|
|
#define SECURITY_VALID_HOOKS (1 << NF_INET_LOCAL_IN) | \
|
|
(1 << NF_INET_FORWARD) | \
|
|
(1 << NF_INET_LOCAL_OUT)
|
|
|
|
static const struct xt_table security_table = {
|
|
.name = "security",
|
|
.valid_hooks = SECURITY_VALID_HOOKS,
|
|
.me = THIS_MODULE,
|
|
.af = NFPROTO_IPV6,
|
|
.priority = NF_IP6_PRI_SECURITY,
|
|
};
|
|
|
|
static struct nf_hook_ops *sectbl_ops __read_mostly;
|
|
|
|
static int ip6table_security_table_init(struct net *net)
|
|
{
|
|
struct ip6t_replace *repl;
|
|
int ret;
|
|
|
|
repl = ip6t_alloc_initial_table(&security_table);
|
|
if (repl == NULL)
|
|
return -ENOMEM;
|
|
ret = ip6t_register_table(net, &security_table, repl, sectbl_ops);
|
|
kfree(repl);
|
|
return ret;
|
|
}
|
|
|
|
static void __net_exit ip6table_security_net_pre_exit(struct net *net)
|
|
{
|
|
ip6t_unregister_table_pre_exit(net, "security");
|
|
}
|
|
|
|
static void __net_exit ip6table_security_net_exit(struct net *net)
|
|
{
|
|
ip6t_unregister_table_exit(net, "security");
|
|
}
|
|
|
|
static struct pernet_operations ip6table_security_net_ops = {
|
|
.pre_exit = ip6table_security_net_pre_exit,
|
|
.exit = ip6table_security_net_exit,
|
|
};
|
|
|
|
static int __init ip6table_security_init(void)
|
|
{
|
|
int ret = xt_register_template(&security_table,
|
|
ip6table_security_table_init);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
sectbl_ops = xt_hook_ops_alloc(&security_table, ip6t_do_table);
|
|
if (IS_ERR(sectbl_ops)) {
|
|
xt_unregister_template(&security_table);
|
|
return PTR_ERR(sectbl_ops);
|
|
}
|
|
|
|
ret = register_pernet_subsys(&ip6table_security_net_ops);
|
|
if (ret < 0) {
|
|
kfree(sectbl_ops);
|
|
xt_unregister_template(&security_table);
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit ip6table_security_fini(void)
|
|
{
|
|
unregister_pernet_subsys(&ip6table_security_net_ops);
|
|
xt_unregister_template(&security_table);
|
|
kfree(sectbl_ops);
|
|
}
|
|
|
|
module_init(ip6table_security_init);
|
|
module_exit(ip6table_security_fini);
|