From 0ffde9fd144423ec1a9d3d31e186f5e5054b4f80 Mon Sep 17 00:00:00 2001
From: wuruilong <wuruilong@loongson.cn>
Date: Tue, 30 Apr 2024 06:12:17 +0000
Subject: [PATCH] Add support for loong64

---
 pkg/system/dup.go               |  1 +
 pkg/system/dup_linux_loong64.go | 11 +++++++++++
 2 files changed, 12 insertions(+)
 create mode 100644 pkg/system/dup_linux_loong64.go

diff --git a/pkg/system/dup.go b/pkg/system/dup.go
index 4fee4013..8270f057 100644
--- a/pkg/system/dup.go
+++ b/pkg/system/dup.go
@@ -5,6 +5,7 @@
 // +build !windows
 // +build !linux !arm64
 // +build !linux !riscv64
+// +build !linux !loong64
 
 package system
 
diff --git a/pkg/system/dup_linux_loong64.go b/pkg/system/dup_linux_loong64.go
new file mode 100644
index 00000000..bda47e81
--- /dev/null
+++ b/pkg/system/dup_linux_loong64.go
@@ -0,0 +1,11 @@
+// Copyright 2019-2022 Graham Clark. All rights reserved.  Use of this source
+// code is governed by the MIT license that can be found in the LICENSE
+// file.
+
+package system
+
+import "syscall"
+
+func Dup2(fd int, fd2 int) error {
+	return syscall.Dup3(fd, fd2, 0)
+}