socket: suppress sparse warnings
stephen hemminger [Wed, 23 Feb 2011 09:06:48 +0000 (09:06 +0000)]
Use __force to quiet sparse warnings for cases where the code
is simulating user space pointers.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/socket.c

index 9fa1e3b..937d0fc 100644 (file)
@@ -2648,7 +2648,8 @@ static int bond_ioctl(struct net *net, unsigned int cmd,
 
                old_fs = get_fs();
                set_fs(KERNEL_DS);
-               err = dev_ioctl(net, cmd, &kifr);
+               err = dev_ioctl(net, cmd,
+                               (struct ifreq __user __force *) &kifr);
                set_fs(old_fs);
 
                return err;
@@ -2757,7 +2758,7 @@ static int compat_sioc_ifmap(struct net *net, unsigned int cmd,
 
        old_fs = get_fs();
        set_fs(KERNEL_DS);
-       err = dev_ioctl(net, cmd, (void __user *)&ifr);
+       err = dev_ioctl(net, cmd, (void  __user __force *)&ifr);
        set_fs(old_fs);
 
        if (cmd == SIOCGIFMAP && !err) {
@@ -2862,7 +2863,8 @@ static int routing_ioctl(struct net *net, struct socket *sock,
                ret |= __get_user(rtdev, &(ur4->rt_dev));
                if (rtdev) {
                        ret |= copy_from_user(devname, compat_ptr(rtdev), 15);
-                       r4.rt_dev = devname; devname[15] = 0;
+                       r4.rt_dev = (char __user __force *)devname;
+                       devname[15] = 0;
                } else
                        r4.rt_dev = NULL;