Refine WireGuard client routing and authentication UI

client/tunnel-go/record_unix.go

@@ -0,0 +1,17 @@
+//go:build !windows
+
+package main
+
+import (
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+func openRecord(path string) (*os.File, error) {
+	fd, err := unix.Open(path, unix.O_RDONLY|unix.O_CLOEXEC|unix.O_NOFOLLOW, 0)
+	if err != nil {
+		return nil, err
+	}
+	return os.NewFile(uintptr(fd), path), nil
+}