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[NETNS][ICMP]: Register pernet subsys to make ICMP sysctls per-net.

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This includes adding pernet_operations, empty init and exit
hooks and a bit of changes in sysctl_ipv4_init just not to
have this part in next patches.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2008-03-26 01:54:18 -07:00 committed by David S. Miller
parent f5aa23fd49
commit 1577519d6b
1 changed files with 23 additions and 1 deletions
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24
net/ipv4/sysctl_net_ipv4.c
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@ -811,12 +811,34 @@ struct ctl_path net_ipv4_ctl_path[] = {
};
EXPORT_SYMBOL_GPL(net_ipv4_ctl_path);
static __net_init int ipv4_sysctl_init_net(struct net *net)
{
return 0;
}
static __net_exit void ipv4_sysctl_exit_net(struct net *net)
{
}
static __net_initdata struct pernet_operations ipv4_sysctl_ops = {
.init = ipv4_sysctl_init_net,
.exit = ipv4_sysctl_exit_net,
};
static __init int sysctl_ipv4_init(void)
{
struct ctl_table_header *hdr;
hdr = register_sysctl_paths(net_ipv4_ctl_path, ipv4_table);
return hdr == NULL ? -ENOMEM : 0;
if (hdr == NULL)
return -ENOMEM;
if (register_pernet_subsys(&ipv4_sysctl_ops)) {
unregister_sysctl_table(hdr);
return -ENOMEM;
}
return 0;
}
__initcall(sysctl_ipv4_init);