From b854272b3c732316676e9128f7b9e6f1e1ff88b0 Mon Sep 17 00:00:00 2001 From: "Denis V. Lunev" Date: Sat, 1 Dec 2007 00:21:31 +1100 Subject: [NET]: Modify all rtnetlink methods to only work in the initial namespace (v2) Before I can enable rtnetlink to work in all network namespaces I need to be certain that something won't break. So this patch deliberately disables all of the rtnletlink methods in everything except the initial network namespace. After the methods have been audited this extra check can be disabled. Changes from v1: - added IPv6 addrlabel protection Signed-off-by: Denis V. Lunev Signed-off-by: Eric W. Biederman Signed-off-by: David S. Miller Signed-off-by: Herbert Xu --- net/bridge/br_netlink.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'net/bridge/br_netlink.c') diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 53ab8e0cb51..a4ffa2b63cd 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -13,6 +13,7 @@ #include #include #include +#include #include "br_private.h" static inline size_t br_nlmsg_size(void) @@ -107,9 +108,13 @@ errout: */ static int br_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) { + struct net *net = skb->sk->sk_net; struct net_device *dev; int idx; + if (net != &init_net) + return 0; + idx = 0; for_each_netdev(&init_net, dev) { /* not a bridge port */ @@ -135,12 +140,16 @@ skip: */ static int br_rtm_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { + struct net *net = skb->sk->sk_net; struct ifinfomsg *ifm; struct nlattr *protinfo; struct net_device *dev; struct net_bridge_port *p; u8 new_state; + if (net != &init_net) + return -EINVAL; + if (nlmsg_len(nlh) < sizeof(*ifm)) return -EINVAL; -- cgit v1.2.3-70-g09d2