From d0099fad6cd75d1cb5f92876a2b05ede07cb3e7d Mon Sep 17 00:00:00 2001
From: Pavel Emelyanov <xemul@openvz.org>
Date: Sat, 8 Dec 2007 00:09:24 -0800
Subject: [PATCH] --- yaml --- r: 78371 b: refs/heads/master c:
 024626e36d75fc8c6e32d50d4c68bfc3b8df5fdf h: refs/heads/master i:   78369:
 0d4edce4d2a8f8d04085ca11f075ab8fb3a1037a   78367:
 1c146da357724912bb1dc6283c7780f6cd018159 v: v3

---
 [refs]                            |  2 +-
 trunk/include/net/net_namespace.h |  3 ++
 trunk/net/core/sysctl_net_core.c  | 50 +++++++++++++++++++++++++++----
 3 files changed, 49 insertions(+), 6 deletions(-)

diff --git a/[refs] b/[refs]
index af4d956afef9..ca5fa9d7cfed 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cbbb90e68cd073b8d63b491166066e347902b7e9
+refs/heads/master: 024626e36d75fc8c6e32d50d4c68bfc3b8df5fdf
diff --git a/trunk/include/net/net_namespace.h b/trunk/include/net/net_namespace.h
index f97b2a4469ae..d5936115d972 100644
--- a/trunk/include/net/net_namespace.h
+++ b/trunk/include/net/net_namespace.h
@@ -37,6 +37,9 @@ struct net {
 
 	struct sock 		*rtnl;			/* rtnetlink socket */
 
+	/* core sysctls */
+	struct ctl_table_header	*sysctl_core_hdr;
+
 	/* List of all packet sockets. */
 	rwlock_t		packet_sklist_lock;
 	struct hlist_head	packet_sklist;
diff --git a/trunk/net/core/sysctl_net_core.c b/trunk/net/core/sysctl_net_core.c
index e322713e590a..57a7eadb8551 100644
--- a/trunk/net/core/sysctl_net_core.c
+++ b/trunk/net/core/sysctl_net_core.c
@@ -151,18 +151,58 @@ static struct ctl_table net_core_table[] = {
 	{ .ctl_name = 0 }
 };
 
-static __initdata struct ctl_path net_core_path[] = {
+static __net_initdata struct ctl_path net_core_path[] = {
 	{ .procname = "net", .ctl_name = CTL_NET, },
 	{ .procname = "core", .ctl_name = NET_CORE, },
 	{ },
 };
 
-static __init int sysctl_core_init(void)
+static __net_init int sysctl_core_net_init(struct net *net)
 {
-	struct ctl_table_header *hdr;
+	struct ctl_table *tbl, *tmp;
+
+	tbl = net_core_table;
+	if (net != &init_net) {
+		tbl = kmemdup(tbl, sizeof(net_core_table), GFP_KERNEL);
+		if (tbl == NULL)
+			goto err_dup;
+
+		for (tmp = tbl; tmp->procname; tmp++)
+			tmp->mode &= ~0222;
+	}
+
+	net->sysctl_core_hdr = register_net_sysctl_table(net,
+			net_core_path, tbl);
+	if (net->sysctl_core_hdr == NULL)
+		goto err_reg;
 
-	hdr = register_sysctl_paths(net_core_path, net_core_table);
-	return hdr == NULL ? -ENOMEM : 0;
+	return 0;
+
+err_reg:
+	if (tbl != net_core_table)
+		kfree(tbl);
+err_dup:
+	return -ENOMEM;
+}
+
+static __net_exit void sysctl_core_net_exit(struct net *net)
+{
+	struct ctl_table *tbl;
+
+	tbl = net->sysctl_core_hdr->ctl_table_arg;
+	unregister_net_sysctl_table(net->sysctl_core_hdr);
+	BUG_ON(tbl == net_core_table);
+	kfree(tbl);
+}
+
+static __net_initdata struct pernet_operations sysctl_core_ops = {
+	.init = sysctl_core_net_init,
+	.exit = sysctl_core_net_exit,
+};
+
+static __init int sysctl_core_init(void)
+{
+	return register_pernet_subsys(&sysctl_core_ops);
 }
 
 __initcall(sysctl_core_init);