[NET]: Make device event notification network namespace safe

[net-next-2.6.git] / net / appletalk / ddp.c

diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index f6a92a0b7aa6b0400a8613c1d57569b8c9935587..36fcdbf923c4362e457141a19fe9827b3abd333c 100644 (file)
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -647,9 +647,14 @@ static inline void atalk_dev_down(struct net_device *dev)
 static int ddp_device_event(struct notifier_block *this, unsigned long event,
                            void *ptr)
 {
+       struct net_device *dev = ptr;
+
+       if (dev->nd_net != &init_net)
+               return NOTIFY_DONE;
+
        if (event == NETDEV_DOWN)
                /* Discard any use of this */
-               atalk_dev_down(ptr);
+               atalk_dev_down(dev);
 
        return NOTIFY_DONE;
 }
@@ -1024,11 +1029,14 @@ static struct proto ddp_proto = {
  * Create a socket. Initialise the socket, blank the addresses
  * set the state.
  */
-static int atalk_create(struct socket *sock, int protocol)
+static int atalk_create(struct net *net, struct socket *sock, int protocol)
 {
        struct sock *sk;
        int rc = -ESOCKTNOSUPPORT;
 
+       if (net != &init_net)
+               return -EAFNOSUPPORT;
+
        /*
         * We permit SOCK_DGRAM and RAW is an extension. It is trivial to do
         * and gives you the full ELAP frame. Should be handy for CAP 8)
@@ -1036,7 +1044,7 @@ static int atalk_create(struct socket *sock, int protocol)
        if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM)
                goto out;
        rc = -ENOMEM;
-       sk = sk_alloc(PF_APPLETALK, GFP_KERNEL, &ddp_proto, 1);
+       sk = sk_alloc(net, PF_APPLETALK, GFP_KERNEL, &ddp_proto, 1);
        if (!sk)
                goto out;
        rc = 0;
@@ -1398,6 +1406,9 @@ static int atalk_rcv(struct sk_buff *skb, struct net_device *dev,
        int origlen;
        __u16 len_hops;
 
+       if (dev->nd_net != &init_net)
+               goto freeit;
+
        /* Don't mangle buffer if shared */
        if (!(skb = skb_share_check(skb, GFP_ATOMIC)))
                goto out;
@@ -1483,6 +1494,9 @@ freeit:
 static int ltalk_rcv(struct sk_buff *skb, struct net_device *dev,
                     struct packet_type *pt, struct net_device *orig_dev)
 {
+       if (dev->nd_net != &init_net)
+               goto freeit;
+
        /* Expand any short form frames */
        if (skb_mac_header(skb)[2] == 1) {
                struct ddpehdr *ddp;
@@ -1844,7 +1858,6 @@ static const struct proto_ops SOCKOPS_WRAPPED(atalk_dgram_ops) = {
        .sendpage       = sock_no_sendpage,
 };
 
-#include <linux/smp_lock.h>
 SOCKOPS_WRAP(atalk_dgram, PF_APPLETALK);
 
 static struct notifier_block ddp_notifier = {