From 0596ab880e47d77b2a5e29b369e2e634eb213091 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Thu, 9 Jan 2020 21:30:56 +0100
Subject: [PATCH] Kernel: connect() should EISCONN on already-connected
 LocalSocket

This was causing us to try and accept the same client socket multiple
times on the server side, tripping an assertion in Socket::accept().
---
 Kernel/Net/LocalSocket.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Kernel/Net/LocalSocket.cpp b/Kernel/Net/LocalSocket.cpp
index 01782d67626..4cb81da30e6 100644
--- a/Kernel/Net/LocalSocket.cpp
+++ b/Kernel/Net/LocalSocket.cpp
@@ -105,6 +105,8 @@ KResult LocalSocket::connect(FileDescription& description, const sockaddr* addre
         return KResult(-EINVAL);
     if (address->sa_family != AF_LOCAL)
         return KResult(-EINVAL);
+    if (is_connected())
+        return KResult(-EISCONN);
 
     const sockaddr_un& local_address = *reinterpret_cast<const sockaddr_un*>(address);
     char safe_address[sizeof(local_address.sun_path) + 1] = { 0 };