local_socket: corrent send/recv return value after shutdown

Signed-off-by: ligd <liguiding1@xiaomi.com>

Author: GUIDINGLI

net/local/local_recvmsg.c

@@ -539,11 +539,19 @@ psock_dgram_recvfrom(FAR struct socket *psock, FAR void *buf, size_t len,
 ssize_t local_recvmsg(FAR struct socket *psock, FAR struct msghdr *msg,
                       int flags)
 {
+  FAR struct local_conn_s *conn = psock->s_conn;
   FAR socklen_t *fromlen = &msg->msg_namelen;
   FAR struct sockaddr *from = msg->msg_name;
   FAR void *buf = msg->msg_iov->iov_base;
   size_t len = msg->msg_iov->iov_len;
 
+  /* Check shutdown state */
+
+  if (conn->lc_infile.f_inode == NULL)
+    {
+      return 0;
+    }
+
   DEBUGASSERT(buf);
 
   /* Check for a stream socket */

net/local/local_sendmsg.c

@@ -431,12 +431,20 @@ static ssize_t local_sendto(FAR struct socket *psock,
 ssize_t local_sendmsg(FAR struct socket *psock, FAR struct msghdr *msg,
                       int flags)
 {
+  FAR struct local_conn_s *conn = psock->s_conn;
   FAR const struct sockaddr *to = msg->msg_name;
   FAR const struct iovec *buf = msg->msg_iov;
   socklen_t tolen = msg->msg_namelen;
   size_t len = msg->msg_iovlen;
+
+  /* Check shutdown state */
+
+  if (conn->lc_outfile.f_inode == NULL)
+    {
+      return -EPIPE;
+    }
+
 #ifdef CONFIG_NET_LOCAL_SCM
-  FAR struct local_conn_s *conn = psock->s_conn;
   int count = 0;
 
   if (msg->msg_control &&
@@ -448,17 +456,19 @@ ssize_t local_sendmsg(FAR struct socket *psock, FAR struct msghdr *msg,
           return count;
         }
     }
-#endif /* CONFIG_NET_LOCAL_SCM */
 
   len = to ? local_sendto(psock, buf, len, flags, to, tolen) :
              local_send(psock, buf, len, flags);
-#ifdef CONFIG_NET_LOCAL_SCM
+
   if (len < 0 && count > 0)
     {
       net_lock();
       local_freectl(conn, count);
       net_unlock();
     }
+#else
+  len = to ? local_sendto(psock, buf, len, flags, to, tolen) :
+             local_send(psock, buf, len, flags);
 #endif
 
   return len;