[PATCH 18/18] net: remove cmsg restriction from io_uring based send/recvmsg calls

[Jens Axboe <axboe@kernel.dk>]

No need to restrict these anymore, as the worker threads are direct
clones of the original task. Hence we know for a fact that we can
support anything that the regular task can.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 net/socket.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/net/socket.c b/net/socket.c
index 33e8b6c4e1d3..71fb2af118f5 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2408,10 +2408,6 @@ static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg,
 long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg,
 			unsigned int flags)
 {
-	/* disallow ancillary data requests from this path */
-	if (msg->msg_control || msg->msg_controllen)
-		return -EINVAL;
-
 	return ____sys_sendmsg(sock, msg, flags, NULL, 0);
 }
 
@@ -2620,12 +2616,6 @@ long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg,
 			struct user_msghdr __user *umsg,
 			struct sockaddr __user *uaddr, unsigned int flags)
 {
-	if (msg->msg_control || msg->msg_controllen) {
-		/* disallow ancillary data reqs unless cmsg is plain data */
-		if (!(sock->ops->flags & PROTO_CMSG_DATA_ONLY))
-			return -EINVAL;
-	}
-
 	return ____sys_recvmsg(sock, msg, umsg, uaddr, flags, 0);
 }
 
-- 
2.30.0