Merge tag 'batadv-next-for-davem-20180919' of git://git.open-mesh.org/linux-merge

[linux-2.6-microblaze.git] / net / socket.c

diff --git a/net/socket.c b/net/socket.c
index e6945e3..01f3f8f 100644 (file)
--- a/net/socket.c
+++ b/net/socket.c
@@ -941,7 +941,8 @@ void dlci_ioctl_set(int (*hook) (unsigned int, void __user *))
 EXPORT_SYMBOL(dlci_ioctl_set);
 
 static long sock_do_ioctl(struct net *net, struct socket *sock,
-                                unsigned int cmd, unsigned long arg)
+                         unsigned int cmd, unsigned long arg,
+                         unsigned int ifreq_size)
 {
        int err;
        void __user *argp = (void __user *)arg;
@@ -967,11 +968,11 @@ static long sock_do_ioctl(struct net *net, struct socket *sock,
        } else {
                struct ifreq ifr;
                bool need_copyout;
-               if (copy_from_user(&ifr, argp, sizeof(struct ifreq)))
+               if (copy_from_user(&ifr, argp, ifreq_size))
                        return -EFAULT;
                err = dev_ioctl(net, cmd, &ifr, &need_copyout);
                if (!err && need_copyout)
-                       if (copy_to_user(argp, &ifr, sizeof(struct ifreq)))
+                       if (copy_to_user(argp, &ifr, ifreq_size))
                                return -EFAULT;
        }
        return err;
@@ -1070,7 +1071,8 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
                        err = open_related_ns(&net->ns, get_net_ns);
                        break;
                default:
-                       err = sock_do_ioctl(net, sock, cmd, arg);
+                       err = sock_do_ioctl(net, sock, cmd, arg,
+                                           sizeof(struct ifreq));
                        break;
                }
        return err;
@@ -2750,7 +2752,8 @@ static int do_siocgstamp(struct net *net, struct socket *sock,
        int err;
 
        set_fs(KERNEL_DS);
-       err = sock_do_ioctl(net, sock, cmd, (unsigned long)&ktv);
+       err = sock_do_ioctl(net, sock, cmd, (unsigned long)&ktv,
+                           sizeof(struct compat_ifreq));
        set_fs(old_fs);
        if (!err)
                err = compat_put_timeval(&ktv, up);
@@ -2766,7 +2769,8 @@ static int do_siocgstampns(struct net *net, struct socket *sock,
        int err;
 
        set_fs(KERNEL_DS);
-       err = sock_do_ioctl(net, sock, cmd, (unsigned long)&kts);
+       err = sock_do_ioctl(net, sock, cmd, (unsigned long)&kts,
+                           sizeof(struct compat_ifreq));
        set_fs(old_fs);
        if (!err)
                err = compat_put_timespec(&kts, up);
@@ -3072,7 +3076,8 @@ static int routing_ioctl(struct net *net, struct socket *sock,
        }
 
        set_fs(KERNEL_DS);
-       ret = sock_do_ioctl(net, sock, cmd, (unsigned long) r);
+       ret = sock_do_ioctl(net, sock, cmd, (unsigned long) r,
+                           sizeof(struct compat_ifreq));
        set_fs(old_fs);
 
 out:
@@ -3185,7 +3190,8 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock,
        case SIOCBONDSETHWADDR:
        case SIOCBONDCHANGEACTIVE:
        case SIOCGIFNAME:
-               return sock_do_ioctl(net, sock, cmd, arg);
+               return sock_do_ioctl(net, sock, cmd, arg,
+                                    sizeof(struct compat_ifreq));
        }
 
        return -ENOIOCTLCMD;