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netfilter: ip6tables: Add a .pre_exit hook in all ip6table_foo.c.

Browse Source 
Using new helpers ip6t_unregister_table_pre_exit() and
ip6t_unregister_table_exit().

Fixes: b9e69e1273 ("netfilter: xtables: don't hook tables by default")
Signed-off-by: David Wilder <dwilder@us.ibm.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
David Wilder 2020-06-22 10:10:14 -07:00 committed by Pablo Neira Ayuso
parent 57ea5f1888
commit 5f027bc74a
5 changed files with 44 additions and 6 deletions
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10
net/ipv6/netfilter/ip6table_filter.c
View File

@ -73,16 +73,24 @@ static int __net_init ip6table_filter_net_init(struct net *net)
return 0;
}
static void __net_exit ip6table_filter_net_pre_exit(struct net *net)
{
if (net->ipv6.ip6table_filter)
ip6t_unregister_table_pre_exit(net, net->ipv6.ip6table_filter,
filter_ops);
}
static void __net_exit ip6table_filter_net_exit(struct net *net)
{
if (!net->ipv6.ip6table_filter)
return;
ip6t_unregister_table(net, net->ipv6.ip6table_filter, filter_ops);
ip6t_unregister_table_exit(net, net->ipv6.ip6table_filter);
net->ipv6.ip6table_filter = NULL;
}
static struct pernet_operations ip6table_filter_net_ops = {
.init = ip6table_filter_net_init,
.pre_exit = ip6table_filter_net_pre_exit,
.exit = ip6table_filter_net_exit,
};

10
net/ipv6/netfilter/ip6table_mangle.c
View File

@ -93,16 +93,24 @@ static int __net_init ip6table_mangle_table_init(struct net *net)
return ret;
}
static void __net_exit ip6table_mangle_net_pre_exit(struct net *net)
{
if (net->ipv6.ip6table_mangle)
ip6t_unregister_table_pre_exit(net, net->ipv6.ip6table_mangle,
mangle_ops);
}
static void __net_exit ip6table_mangle_net_exit(struct net *net)
{
if (!net->ipv6.ip6table_mangle)
return;
ip6t_unregister_table(net, net->ipv6.ip6table_mangle, mangle_ops);
ip6t_unregister_table_exit(net, net->ipv6.ip6table_mangle);
net->ipv6.ip6table_mangle = NULL;
}
static struct pernet_operations ip6table_mangle_net_ops = {
.pre_exit = ip6table_mangle_net_pre_exit,
.exit = ip6table_mangle_net_exit,
};

10
net/ipv6/netfilter/ip6table_nat.c
View File

@ -114,16 +114,22 @@ static int __net_init ip6table_nat_table_init(struct net *net)
return ret;
}
static void __net_exit ip6table_nat_net_pre_exit(struct net *net)
{
if (net->ipv6.ip6table_nat)
ip6t_nat_unregister_lookups(net);
}
static void __net_exit ip6table_nat_net_exit(struct net *net)
{
if (!net->ipv6.ip6table_nat)
return;
ip6t_nat_unregister_lookups(net);
ip6t_unregister_table(net, net->ipv6.ip6table_nat, NULL);
ip6t_unregister_table_exit(net, net->ipv6.ip6table_nat);
net->ipv6.ip6table_nat = NULL;
}
static struct pernet_operations ip6table_nat_net_ops = {
.pre_exit = ip6table_nat_net_pre_exit,
.exit = ip6table_nat_net_exit,
};

10
net/ipv6/netfilter/ip6table_raw.c
View File

@ -66,15 +66,23 @@ static int __net_init ip6table_raw_table_init(struct net *net)
return ret;
}
static void __net_exit ip6table_raw_net_pre_exit(struct net *net)
{
if (net->ipv6.ip6table_raw)
ip6t_unregister_table_pre_exit(net, net->ipv6.ip6table_raw,
rawtable_ops);
}
static void __net_exit ip6table_raw_net_exit(struct net *net)
{
if (!net->ipv6.ip6table_raw)
return;
ip6t_unregister_table(net, net->ipv6.ip6table_raw, rawtable_ops);
ip6t_unregister_table_exit(net, net->ipv6.ip6table_raw);
net->ipv6.ip6table_raw = NULL;
}
static struct pernet_operations ip6table_raw_net_ops = {
.pre_exit = ip6table_raw_net_pre_exit,
.exit = ip6table_raw_net_exit,
};

10
net/ipv6/netfilter/ip6table_security.c
View File

@ -61,15 +61,23 @@ static int __net_init ip6table_security_table_init(struct net *net)
return ret;
}
static void __net_exit ip6table_security_net_pre_exit(struct net *net)
{
if (net->ipv6.ip6table_security)
ip6t_unregister_table_pre_exit(net, net->ipv6.ip6table_security,
sectbl_ops);
}
static void __net_exit ip6table_security_net_exit(struct net *net)
{
if (!net->ipv6.ip6table_security)
return;
ip6t_unregister_table(net, net->ipv6.ip6table_security, sectbl_ops);
ip6t_unregister_table_exit(net, net->ipv6.ip6table_security);
net->ipv6.ip6table_security = NULL;
}
static struct pernet_operations ip6table_security_net_ops = {
.pre_exit = ip6table_security_net_pre_exit,
.exit = ip6table_security_net_exit,
};