File 2062-kernel-esock-Make-it-possible-to-get-file-descriptor.patch of Package erlang

From 8d6c6fca0d0b9b8745dc61dc6f91a7d4480ad9ba Mon Sep 17 00:00:00 2001
From: Micael Karlberg <bmk@erlang.org>
Date: Tue, 30 Jun 2020 17:57:01 +0200
Subject: [PATCH 02/10] [kernel|esock] Make it possible to get file descriptor
 of socket

OTP-16754
---
 lib/kernel/src/gen_tcp_socket.erl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/kernel/src/gen_tcp_socket.erl b/lib/kernel/src/gen_tcp_socket.erl
index c3d026f625..28abc4f609 100644
--- a/lib/kernel/src/gen_tcp_socket.erl
+++ b/lib/kernel/src/gen_tcp_socket.erl
@@ -712,7 +712,8 @@ ignore_opt() ->
 socket_opt() ->
     #{%% Level: otp
       buffer => {otp, rcvbuf},
-      debug => {otp, debug},
+      debug  => {otp, debug},
+      fd     => {otp, fd},
       %%
       %% Level: socket
       bind_to_device => {socket, bindtodevice},
-- 
2.26.2