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af_unix: Set error only when needed in unix_stream_sendmsg().

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We will introduce skb drop reason for AF_UNIX, then we need to
set an errno and a drop reason for each path.

Let's set an error only when it's needed in unix_stream_sendmsg().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Kuniyuki Iwashima 2024-12-13 20:08:41 +09:00 committed by Paolo Abeni
parent e26ee0a736
commit 6c444255b1
1 changed files with 4 additions and 3 deletions
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7
net/unix/af_unix.c
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@ -2254,8 +2254,8 @@ static int unix_stream_sendmsg(struct socket *sock, struct msghdr *msg,
wait_for_unix_gc(scm.fp);
err = -EOPNOTSUPP;
if (msg->msg_flags & MSG_OOB) {
err = -EOPNOTSUPP;
#if IS_ENABLED(CONFIG_AF_UNIX_OOB)
if (len)
len--;
@ -2268,10 +2268,11 @@ static int unix_stream_sendmsg(struct socket *sock, struct msghdr *msg,
err = READ_ONCE(sk->sk_state) == TCP_ESTABLISHED ? -EISCONN : -EOPNOTSUPP;
goto out_err;
} else {
err = -ENOTCONN;
other = unix_peer(sk);
if (!other)
if (!other) {
err = -ENOTCONN;
goto out_err;
}
}
if (READ_ONCE(sk->sk_shutdown) & SEND_SHUTDOWN)