From cd5892c756f51ed6ff18ff49c837d219bfd9bb5d Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Tue, 13 Sep 2016 08:49:05 +0100
Subject: [PATCH] rxrpc: Create an address for sendmsg() to bind unbound socket
with
Create an address for sendmsg() to bind unbound socket with rather than
using a completely blank address otherwise the transport socket creation
will fail because it will try to use address family 0.
We use the address family specified in the protocol argument when the
AF_RXRPC socket was created and SOCK_DGRAM as the default. For anything
else, bind() must be used.
Signed-off-by: David Howells <dhowells@redhat.com>
---
net/rxrpc/af_rxrpc.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 25d00ded24bc9..741b0d8d2e8c6 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -401,6 +401,18 @@ static int rxrpc_sendmsg(struct socket *sock, struct msghdr *m, size_t len)
switch (rx->sk.sk_state) {
case RXRPC_UNBOUND:
+ rx->srx.srx_family = AF_RXRPC;
+ rx->srx.srx_service = 0;
+ rx->srx.transport_type = SOCK_DGRAM;
+ rx->srx.transport.family = rx->family;
+ switch (rx->family) {
+ case AF_INET:
+ rx->srx.transport_len = sizeof(struct sockaddr_in);
+ break;
+ default:
+ ret = -EAFNOSUPPORT;
+ goto error_unlock;
+ }
local = rxrpc_lookup_local(&rx->srx);
if (IS_ERR(local)) {
ret = PTR_ERR(local);
--
2.39.5