From 83edde34494264e0917f134086cb49ae05d72d82 Mon Sep 17 00:00:00 2001
From: Owen <owen@txv.io>
Date: Wed, 31 Dec 2025 18:01:25 -0500
Subject: [PATCH] Fix build on darwin

Former-commit-id: fbeb5be88d9a2c126c232e0df78efef4fa51ead8
---
 device/tun_darwin.go                 | 44 ++++++++++++++++++++++++++++
 device/{tun_unix.go => tun_linux.go} |  2 +-
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 device/tun_darwin.go
 rename device/{tun_unix.go => tun_linux.go} (98%)

diff --git a/device/tun_darwin.go b/device/tun_darwin.go
new file mode 100644
index 0000000..f763f74
--- /dev/null
+++ b/device/tun_darwin.go
@@ -0,0 +1,44 @@
+//go:build darwin
+
+package device
+
+import (
+	"net"
+	"os"
+
+	"github.com/fosrl/newt/logger"
+	"golang.org/x/sys/unix"
+	"golang.zx2c4.com/wireguard/ipc"
+	"golang.zx2c4.com/wireguard/tun"
+)
+
+func CreateTUNFromFD(tunFd uint32, mtuInt int) (tun.Device, error) {
+	dupTunFd, err := unix.Dup(int(tunFd))
+	if err != nil {
+		logger.Error("Unable to dup tun fd: %v", err)
+		return nil, err
+	}
+
+	err = unix.SetNonblock(dupTunFd, true)
+	if err != nil {
+		unix.Close(dupTunFd)
+		return nil, err
+	}
+
+	file := os.NewFile(uintptr(dupTunFd), "/dev/tun")
+	device, err := tun.CreateTUNFromFile(file, mtuInt)
+	if err != nil {
+		file.Close()
+		return nil, err
+	}
+
+	return device, nil
+}
+
+func UapiOpen(interfaceName string) (*os.File, error) {
+	return ipc.UAPIOpen(interfaceName)
+}
+
+func UapiListen(interfaceName string, fileUAPI *os.File) (net.Listener, error) {
+	return ipc.UAPIListen(interfaceName, fileUAPI)
+}
diff --git a/device/tun_unix.go b/device/tun_linux.go
similarity index 98%
rename from device/tun_unix.go
rename to device/tun_linux.go
index 22cec13..902f269 100644
--- a/device/tun_unix.go
+++ b/device/tun_linux.go
@@ -1,4 +1,4 @@
-//go:build !windows
+//go:build linux
 
 package device