From 6c8e8c3003ee5acb26223d40b7de0fce76942cb7 Mon Sep 17 00:00:00 2001
From: ptrcnull <git@ptrcnull.me>
Date: Mon, 29 Nov 2021 22:13:48 +0100
Subject: [PATCH] feat: Add method for opening devices

---
 device.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 device.go

diff --git a/device.go b/device.go
new file mode 100644
index 0000000..a8a6b00
--- /dev/null
+++ b/device.go
@@ -0,0 +1,23 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+)
+
+var devices map[string]io.ReadWriteCloser
+
+func GetDevice(name string) (io.ReadWriteCloser, error) {
+	if dev, ok := devices[name]; ok {
+		return dev, nil
+	}
+
+	dev, err := os.OpenFile("/dev/" + name, os.O_RDWR, 0644)
+	if err != nil {
+		return nil, fmt.Errorf("open: %w", err)
+	}
+
+	devices[name] = dev
+	return dev, nil
+}