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authorDenis V. Lunev <den@openvz.org>2008-02-28 20:48:49 -0800
committerDavid S. Miller <davem@davemloft.net>2008-02-28 20:48:49 -0800
commit2430aa85de8343662e8496dac9f9e4dade680023 (patch)
treee64ced549ad5b18cc9dc3ab36035c6ded65d1a19
parent0c65babd6ce758dd06330b3d9d677b7624f9e3fa (diff)
[NETNS]: Disable multicaststing configuration inside non-initial namespace.
Do not calls hooks from device notifiers and disallow configuration from ioctl/netlink layer. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/igmp.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 732cd07e607..d3f34a772f3 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1198,6 +1198,9 @@ void ip_mc_inc_group(struct in_device *in_dev, __be32 addr)
ASSERT_RTNL();
+ if (in_dev->dev->nd_net != &init_net)
+ return;
+
for (im=in_dev->mc_list; im; im=im->next) {
if (im->multiaddr == addr) {
im->users++;
@@ -1277,6 +1280,9 @@ void ip_mc_dec_group(struct in_device *in_dev, __be32 addr)
ASSERT_RTNL();
+ if (in_dev->dev->nd_net != &init_net)
+ return;
+
for (ip=&in_dev->mc_list; (i=*ip)!=NULL; ip=&i->next) {
if (i->multiaddr==addr) {
if (--i->users == 0) {
@@ -1304,6 +1310,9 @@ void ip_mc_down(struct in_device *in_dev)
ASSERT_RTNL();
+ if (in_dev->dev->nd_net != &init_net)
+ return;
+
for (i=in_dev->mc_list; i; i=i->next)
igmp_group_dropped(i);
@@ -1324,6 +1333,9 @@ void ip_mc_init_dev(struct in_device *in_dev)
{
ASSERT_RTNL();
+ if (in_dev->dev->nd_net != &init_net)
+ return;
+
in_dev->mc_tomb = NULL;
#ifdef CONFIG_IP_MULTICAST
in_dev->mr_gq_running = 0;
@@ -1347,6 +1359,9 @@ void ip_mc_up(struct in_device *in_dev)
ASSERT_RTNL();
+ if (in_dev->dev->nd_net != &init_net)
+ return;
+
ip_mc_inc_group(in_dev, IGMP_ALL_HOSTS);
for (i=in_dev->mc_list; i; i=i->next)
@@ -1363,6 +1378,9 @@ void ip_mc_destroy_dev(struct in_device *in_dev)
ASSERT_RTNL();
+ if (in_dev->dev->nd_net != &init_net)
+ return;
+
/* Deactivate timers */
ip_mc_down(in_dev);
@@ -1744,6 +1762,9 @@ int ip_mc_join_group(struct sock *sk , struct ip_mreqn *imr)
if (!ipv4_is_multicast(addr))
return -EINVAL;
+ if (sk->sk_net != &init_net)
+ return -EPROTONOSUPPORT;
+
rtnl_lock();
in_dev = ip_mc_find_dev(imr);
@@ -1812,6 +1833,9 @@ int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr)
u32 ifindex;
int ret = -EADDRNOTAVAIL;
+ if (sk->sk_net != &init_net)
+ return -EPROTONOSUPPORT;
+
rtnl_lock();
in_dev = ip_mc_find_dev(imr);
ifindex = imr->imr_ifindex;
@@ -1857,6 +1881,9 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct
if (!ipv4_is_multicast(addr))
return -EINVAL;
+ if (sk->sk_net != &init_net)
+ return -EPROTONOSUPPORT;
+
rtnl_lock();
imr.imr_multiaddr.s_addr = mreqs->imr_multiaddr;
@@ -1990,6 +2017,9 @@ int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex)
msf->imsf_fmode != MCAST_EXCLUDE)
return -EINVAL;
+ if (sk->sk_net != &init_net)
+ return -EPROTONOSUPPORT;
+
rtnl_lock();
imr.imr_multiaddr.s_addr = msf->imsf_multiaddr;
@@ -2070,6 +2100,9 @@ int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
if (!ipv4_is_multicast(addr))
return -EINVAL;
+ if (sk->sk_net != &init_net)
+ return -EPROTONOSUPPORT;
+
rtnl_lock();
imr.imr_multiaddr.s_addr = msf->imsf_multiaddr;
@@ -2132,6 +2165,9 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
if (!ipv4_is_multicast(addr))
return -EINVAL;
+ if (sk->sk_net != &init_net)
+ return -EPROTONOSUPPORT;
+
rtnl_lock();
err = -EADDRNOTAVAIL;
@@ -2216,6 +2252,9 @@ void ip_mc_drop_socket(struct sock *sk)
if (inet->mc_list == NULL)
return;
+ if (sk->sk_net != &init_net)
+ return;
+
rtnl_lock();
while ((iml = inet->mc_list) != NULL) {
struct in_device *in_dev;