From: Denis V. Lunev <den@openvz.org>
Date: Mon, 24 Mar 2008 22:28:43 +0000 (-0700)
Subject: [NETNS]: /proc/net/arp namespacing.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ffc31d3d7719555cd784ecaf82e9c237f3a747ab;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[NETNS]: /proc/net/arp namespacing.

Seqfile operation showing /proc/net/arp are already namespace
aware. All we need is to register this file for each namespace.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 6d90ec524212..832473e30b36 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1377,13 +1377,29 @@ static const struct file_operations arp_seq_fops = {
 	.release	= seq_release_net,
 };
 
-static int __init arp_proc_init(void)
+
+static int __net_init arp_net_init(struct net *net)
 {
-	if (!proc_net_fops_create(&init_net, "arp", S_IRUGO, &arp_seq_fops))
+	if (!proc_net_fops_create(net, "arp", S_IRUGO, &arp_seq_fops))
 		return -ENOMEM;
 	return 0;
 }
 
+static void __net_exit arp_net_exit(struct net *net)
+{
+	proc_net_remove(net, "arp");
+}
+
+static struct pernet_operations arp_net_ops = {
+	.init = arp_net_init,
+	.exit = arp_net_exit,
+};
+
+static int __init arp_proc_init(void)
+{
+	return register_pernet_subsys(&arp_net_ops);
+}
+
 #else /* CONFIG_PROC_FS */
 
 static int __init arp_proc_init(void)