[NETNS]: Process devinet ioctl in the correct namespace.

Add namespace parameter to devinet_ioctl and locate device inside it for
state changes.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 9 insertions, 8 deletions

diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index fc4e3db649e8..da05ab47ff2f 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -129,7 +129,7 @@ extern int unregister_inetaddr_notifier(struct notifier_block *nb);
 
 extern struct net_device *ip_dev_find(struct net *net, __be32 addr);
 extern int              inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
-extern int              devinet_ioctl(unsigned int cmd, void __user *);
+extern int              devinet_ioctl(struct net *net, unsigned int cmd, void __user *);
 extern void             devinet_init(void);
 extern struct in_device *inetdev_by_index(struct net *, int);
 extern __be32           inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 09ca5293d08f..c270080f370e 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -784,6 +784,7 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 {
         struct sock *sk = sock->sk;
         int err = 0;
+        struct net *net = sk->sk_net;
 
         switch (cmd) {
                 case SIOCGSTAMP:
@@ -795,12 +796,12 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 case SIOCADDRT:
                 case SIOCDELRT:
                 case SIOCRTMSG:
-                        err = ip_rt_ioctl(sk->sk_net, cmd, (void __user *)arg);
+                        err = ip_rt_ioctl(net, cmd, (void __user *)arg);
                         break;
                 case SIOCDARP:
                 case SIOCGARP:
                 case SIOCSARP:
-                        err = arp_ioctl(sk->sk_net, cmd, (void __user *)arg);
+                        err = arp_ioctl(net, cmd, (void __user *)arg);
                         break;
                 case SIOCGIFADDR:
                 case SIOCSIFADDR:
@@ -813,7 +814,7 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 case SIOCSIFPFLAGS:
                 case SIOCGIFPFLAGS:
                 case SIOCSIFFLAGS:
-                        err = devinet_ioctl(cmd, (void __user *)arg);
+                        err = devinet_ioctl(net, cmd, (void __user *)arg);
                         break;
                 default:
                         if (sk->sk_prot->ioctl)
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 90210a74d638..af752fc5d0ab 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -595,7 +595,7 @@ static __inline__ int inet_abc_len(__be32 addr)
 }
 
 
-int devinet_ioctl(unsigned int cmd, void __user *arg)
+int devinet_ioctl(struct net *net, unsigned int cmd, void __user *arg)
 {
         struct ifreq ifr;
         struct sockaddr_in sin_orig;
@@ -624,7 +624,7 @@ int devinet_ioctl(unsigned int cmd, void __user *arg)
                 *colon = 0;
 
 #ifdef CONFIG_KMOD
-        dev_load(&init_net, ifr.ifr_name);
+        dev_load(net, ifr.ifr_name);
 #endif
 
         switch (cmd) {
@@ -665,7 +665,7 @@ int devinet_ioctl(unsigned int cmd, void __user *arg)
         rtnl_lock();
 
         ret = -ENODEV;
-        if ((dev = __dev_get_by_name(&init_net, ifr.ifr_name)) == NULL)
+        if ((dev = __dev_get_by_name(net, ifr.ifr_name)) == NULL)
                 goto done;
 
         if (colon)
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 10013ccee8dd..c90e75a66e81 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -291,7 +291,7 @@ static int __init ic_dev_ioctl(unsigned int cmd, struct ifreq *arg)
 
         mm_segment_t oldfs = get_fs();
         set_fs(get_ds());
-        res = devinet_ioctl(cmd, (struct ifreq __user *) arg);
+        res = devinet_ioctl(&init_net, cmd, (struct ifreq __user *) arg);
         set_fs(oldfs);
         return res;
 }