From: Mathias Hall-Andersen <mathias@hall-andersen.dk>
Date: Tue, 18 Jul 2017 12:15:29 +0000 (+0200)
Subject: Fixed file descriptor leak on linux
X-Git-Tag: 0.0.20180514~136
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd6027a4d5114df964e88e357b52883411174558;p=thirdparty%2Fwireguard-go.git

Fixed file descriptor leak on linux
---

diff --git a/src/send.go b/src/send.go
index fdbc676..ca42934 100644
--- a/src/send.go
+++ b/src/send.go
@@ -313,17 +313,15 @@ func (device *Device) RoutineEncryption() {
 			elem.packet = append(elem.packet, 0)
 		}
 
-		// encrypt content
+		// encrypt content (append to header)
 
 		binary.LittleEndian.PutUint64(nonce[4:], elem.nonce)
 		elem.packet = elem.keyPair.send.Seal(
-			elem.packet[:0],
+			header,
 			nonce[:],
 			elem.packet,
 			nil,
 		)
-		length := MessageTransportHeaderSize + len(elem.packet)
-		elem.packet = elem.buffer[:length]
 		elem.mutex.Unlock()
 
 		// refresh key if necessary
diff --git a/src/tun_linux.go b/src/tun_linux.go
index d0e9761..a200bd8 100644
--- a/src/tun_linux.go
+++ b/src/tun_linux.go
@@ -37,6 +37,8 @@ func (tun *NativeTun) setMTU(n int) error {
 		return err
 	}
 
+	defer syscall.Close(fd)
+
 	// do ioctl call
 
 	var ifr [64]byte
@@ -70,6 +72,8 @@ func (tun *NativeTun) MTU() (int, error) {
 		return 0, err
 	}
 
+	defer syscall.Close(fd)
+
 	// do ioctl call
 
 	var ifr [64]byte