net/xfrm: switch xfrm_user_policy to sockptr_t
Pass a sockptr_t to prepare for set_fs-less handling of the kernel
pointer from bpf-cgroup.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 8be2d92..69520ad 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2264,7 +2264,7 @@ static bool km_is_alive(const struct km_event *c)
return is_alive;
}
-int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen)
+int xfrm_user_policy(struct sock *sk, int optname, sockptr_t optval, int optlen)
{
int err;
u8 *data;
@@ -2274,7 +2274,7 @@ int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen
if (in_compat_syscall())
return -EOPNOTSUPP;
- if (!optval && !optlen) {
+ if (sockptr_is_null(optval) && !optlen) {
xfrm_sk_policy_insert(sk, XFRM_POLICY_IN, NULL);
xfrm_sk_policy_insert(sk, XFRM_POLICY_OUT, NULL);
__sk_dst_reset(sk);
@@ -2284,7 +2284,7 @@ int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen
if (optlen <= 0 || optlen > PAGE_SIZE)
return -EMSGSIZE;
- data = memdup_user(optval, optlen);
+ data = memdup_sockptr(optval, optlen);
if (IS_ERR(data))
return PTR_ERR(data);