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authorChristoph Hellwig <hch@lst.de>2020-07-17 08:23:31 +0200
committerDavid S. Miller <davem@davemloft.net>2020-07-19 18:16:41 -0700
commita44d9e72100f7044ac46e4e6dc475f5b4097830f (patch)
tree1bf043e2d02b8e00b1d54952b3e3799b1be79efa /net/socket.c
parent3021ad529950d07e0408d65d0f1df00454c1d223 (diff)
downloadlinux-a44d9e72100f7044ac46e4e6dc475f5b4097830f.tar.bz2
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 <hch@lst.de> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c4
1 files changed, 4 insertions, 0 deletions
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);