From 58bc10b9476508dbfe5e552c2019c1dc7531f0f8 Mon Sep 17 00:00:00 2001
From: Tim Schumacher <timschumi@gmx.de>
Date: Thu, 27 May 2021 21:14:57 +0200
Subject: [PATCH] Kernel: Make dup2() return the fd even if old & new are the
 same (#7506)

---
 Kernel/Syscalls/dup2.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Kernel/Syscalls/dup2.cpp b/Kernel/Syscalls/dup2.cpp
index 485dd5c10f..46b30aeae6 100644
--- a/Kernel/Syscalls/dup2.cpp
+++ b/Kernel/Syscalls/dup2.cpp
@@ -16,7 +16,7 @@ KResultOr<int> Process::sys$dup2(int old_fd, int new_fd)
     if (!description)
         return EBADF;
     if (old_fd == new_fd)
-        return 0;
+        return new_fd;
     if (new_fd < 0 || new_fd >= m_max_open_file_descriptors)
         return EINVAL;
     m_fds[new_fd].set(*description);