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rxrpc: Create an address for sendmsg() to bind unbound socket with

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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>
This commit is contained in:
David Howells 2016-09-13 08:49:05 +01:00
parent 75e4212639
commit cd5892c756
1 changed files with 12 additions and 0 deletions
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12
net/rxrpc/af_rxrpc.c
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@ -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);