From a44d9e72100f7044ac46e4e6dc475f5b4097830f Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 17 Jul 2020 08:23:31 +0200 Subject: net: make ->{get,set}sockopt in proto_ops optional Just check for a NULL method instead of wiring up sock_no_{get,set}sockopt. Signed-off-by: Christoph Hellwig Acked-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- net/socket.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'net/socket.c') diff --git a/net/socket.c b/net/socket.c index dec345982abb..93846568c2fb 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2131,6 +2131,8 @@ int __sys_setsockopt(int fd, int level, int optname, char __user *optval, if (level == SOL_SOCKET && !sock_use_custom_sol_socket(sock)) err = sock_setsockopt(sock, level, optname, optval, optlen); + else if (unlikely(!sock->ops->setsockopt)) + err = -EOPNOTSUPP; else err = sock->ops->setsockopt(sock, level, optname, optval, optlen); @@ -2175,6 +2177,8 @@ int __sys_getsockopt(int fd, int level, int optname, char __user *optval, if (level == SOL_SOCKET) err = sock_getsockopt(sock, level, optname, optval, optlen); + else if (unlikely(!sock->ops->getsockopt)) + err = -EOPNOTSUPP; else err = sock->ops->getsockopt(sock, level, optname, optval, optlen); -- cgit v1.2.3