[NET]: {get|set}sockopt compatibility layer

This patch extends {get|set}sockopt compatibility layer in order to
move protocol specific parts to their place and avoid huge universal
net/compat.c file in the future.

Signed-off-by: Dmitry Mishin <dim@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 28 insertions, 0 deletions

diff --git a/net/core/sock.c b/net/core/sock.c
index 5038a5a7bd84..dd63cdea3fe7 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1385,6 +1385,20 @@ int sock_common_getsockopt(struct socket *sock, int level, int optname,
 
 EXPORT_SYMBOL(sock_common_getsockopt);
 
+#ifdef CONFIG_COMPAT
+int compat_sock_common_getsockopt(struct socket *sock, int level,
+                int optname, char __user *optval, int __user *optlen)
+{
+        struct sock *sk = sock->sk;
+
+        if (sk->sk_prot->compat_setsockopt)
+                return sk->sk_prot->compat_getsockopt(sk, level,
+                        optname, optval, optlen);
+        return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL(compat_sock_common_getsockopt);
+#endif
+
 int sock_common_recvmsg(struct kiocb *iocb, struct socket *sock,
                         struct msghdr *msg, size_t size, int flags)
 {
@@ -1414,6 +1428,20 @@ int sock_common_setsockopt(struct socket *sock, int level, int optname,
 
 EXPORT_SYMBOL(sock_common_setsockopt);
 
+#ifdef CONFIG_COMPAT
+int compat_sock_common_setsockopt(struct socket *sock,
+                int level, int optname, char __user *optval, int optlen)
+{
+        struct sock *sk = sock->sk;
+
+        if (sk->sk_prot->compat_setsockopt)
+                return sk->sk_prot->compat_setsockopt(sk, level,
+                        optname, optval, optlen);
+        return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL(compat_sock_common_setsockopt);
+#endif
+
 void sk_common_release(struct sock *sk)
 {
         if (sk->sk_prot->destroy)