From db7a3b79a296c75f9f43f9006f6efbe2869616b3 Mon Sep 17 00:00:00 2001
From: bjarnedevel0per <>
Date: Tue, 11 Sep 2018 10:26:36 +0200
Subject: [PATCH] handle removal of the serialdevice

---
 Sources/SwiftSerial.swift | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Sources/SwiftSerial.swift b/Sources/SwiftSerial.swift
index 0add9b7..706618d 100644
--- a/Sources/SwiftSerial.swift
+++ b/Sources/SwiftSerial.swift
@@ -210,6 +210,7 @@ public enum PortError: Int32, Error {
     case mustBeOpen
     case stringsMustBeUTF8
     case unableToConvertByteToCharacter
+    case deviceNotConnected
 }
 
 public class SerialPort {
@@ -371,7 +372,13 @@ extension SerialPort {
         guard let fileDescriptor = fileDescriptor else {
             throw PortError.mustBeOpen
         }
-
+        
+        var s: stat = stat()
+        fstat(fileDescriptor, &s)
+        if s.st_nlink != 1 {
+            throw PortError.deviceNotConnected
+        }
+        
         let bytesRead = read(fileDescriptor, buffer, size)
         return bytesRead
     }