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[NET]: Modify all rtnetlink methods to only work in the initial namespace (v2)

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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 <den@openvz.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Denis V. Lunev
2007-12-01 00:21:31 +11:00
committed by David S. Miller
parent ad5d20a639
commit b854272b3c
18 changed files with 218 additions and 1 deletions
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14
net/decnet/dn_dev.c
View File

@ -647,11 +647,15 @@ static const struct nla_policy dn_ifa_policy[IFA_MAX+1] = {
static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
struct net *net = skb->sk->sk_net;
struct nlattr *tb[IFA_MAX+1];
struct dn_dev *dn_db;
struct ifaddrmsg *ifm;
struct dn_ifaddr *ifa, **ifap;
int err;
int err = -EINVAL;
if (net != &init_net)
goto errout;
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy);
if (err < 0)
@ -681,6 +685,7 @@ errout:
static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
struct net *net = skb->sk->sk_net;
struct nlattr *tb[IFA_MAX+1];
struct net_device *dev;
struct dn_dev *dn_db;
@ -688,6 +693,9 @@ static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
struct dn_ifaddr *ifa;
int err;
if (net != &init_net)
return -EINVAL;
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy);
if (err < 0)
return err;
@ -793,11 +801,15 @@ errout:
static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = skb->sk->sk_net;
int idx, dn_idx = 0, skip_ndevs, skip_naddr;
struct net_device *dev;
struct dn_dev *dn_db;
struct dn_ifaddr *ifa;
if (net != &init_net)
return 0;
skip_ndevs = cb->args[0];
skip_naddr = cb->args[1];