From 342dfc306fb32155314dad277f3c3686b83fb9f1 Mon Sep 17 00:00:00 2001 From: Steffen Hurrle Date: Fri, 17 Jan 2014 22:53:15 +0100 Subject: net: add build-time checks for msg->msg_name size This is a follow-up patch to f3d3342602f8bc ("net: rework recvmsg handler msg_name and msg_namelen logic"). DECLARE_SOCKADDR validates that the structure we use for writing the name information to is not larger than the buffer which is reserved for msg->msg_name (which is 128 bytes). Also use DECLARE_SOCKADDR consistently in sendmsg code paths. Signed-off-by: Steffen Hurrle Suggested-by: Hannes Frederic Sowa Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- net/rxrpc/ar-output.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/rxrpc') diff --git a/net/rxrpc/ar-output.c b/net/rxrpc/ar-output.c index e1ac183d50bb..d0e8f1c1898a 100644 --- a/net/rxrpc/ar-output.c +++ b/net/rxrpc/ar-output.c @@ -152,8 +152,8 @@ int rxrpc_client_sendmsg(struct kiocb *iocb, struct rxrpc_sock *rx, if (trans) { service_id = rx->service_id; if (msg->msg_name) { - struct sockaddr_rxrpc *srx = - (struct sockaddr_rxrpc *) msg->msg_name; + DECLARE_SOCKADDR(struct sockaddr_rxrpc *, srx, + msg->msg_name); service_id = htons(srx->srx_service); } key = rx->key; -- cgit v1.2.3