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netfilter: make /proc/net/netfilter pernet

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This patch makes this proc dentry pernet. So far only init_net
had a /proc/net/netfilter directory.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Gao feng 2013-03-24 23:50:39 +00:00 committed by Pablo Neira Ayuso
parent 152b0f5da7
commit f3c1a44a22
3 changed files with 42 additions and 4 deletions
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2
include/net/net_namespace.h
View File

@ -17,6 +17,7 @@
#include <net/netns/ipv6.h>
#include <net/netns/sctp.h>
#include <net/netns/dccp.h>
#include <net/netns/netfilter.h>
#include <net/netns/x_tables.h>
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
#include <net/netns/conntrack.h>
@ -94,6 +95,7 @@ struct net {
struct netns_dccp dccp;
#endif
#ifdef CONFIG_NETFILTER
struct netns_nf nf;
struct netns_xt xt;
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
struct netns_ct ct;

11
include/net/netns/netfilter.h Normal file
View File

@ -0,0 +1,11 @@
#ifndef __NETNS_NETFILTER_H
#define __NETNS_NETFILTER_H
#include <linux/proc_fs.h>
struct netns_nf {
#if defined CONFIG_PROC_FS
struct proc_dir_entry *proc_netfilter;
#endif
};
#endif

33
net/netfilter/core.c
View File

@ -281,6 +281,34 @@ struct proc_dir_entry *proc_net_netfilter;
EXPORT_SYMBOL(proc_net_netfilter);
#endif
static int __net_init netfilter_net_init(struct net *net)
{
#ifdef CONFIG_PROC_FS
net->nf.proc_netfilter = proc_net_mkdir(net, "netfilter",
net->proc_net);
if (net_eq(net, &init_net)) {
if (!net->nf.proc_netfilter)
return -ENOMEM;
else
proc_net_netfilter = net->nf.proc_netfilter;
} else if (!net->nf.proc_netfilter) {
pr_err("cannot create netfilter proc entry");
return -ENOMEM;
}
#endif
return 0;
}
static void __net_exit netfilter_net_exit(struct net *net)
{
remove_proc_entry("netfilter", net->proc_net);
}
static struct pernet_operations netfilter_net_ops = {
.init = netfilter_net_init,
.exit = netfilter_net_exit,
};
void __init netfilter_init(void)
{
int i, h;
@ -289,11 +317,8 @@ void __init netfilter_init(void)
INIT_LIST_HEAD(&nf_hooks[i][h]);
}
#ifdef CONFIG_PROC_FS
proc_net_netfilter = proc_mkdir("netfilter", init_net.proc_net);
if (!proc_net_netfilter)
if (register_pernet_subsys(&netfilter_net_ops) < 0)
panic("cannot create netfilter proc entry");
#endif
if (netfilter_log_init() < 0)
panic("cannot initialize nf_log");