1 files changed, 36 insertions, 0 deletions
diff --git a/libgo/go/net/sock_unix.go b/libgo/go/net/sock_unix.go
new file mode 100644
index 0000000..b0d6d49
--- /dev/null
+++ b/libgo/go/net/sock_unix.go
@@ -0,0 +1,36 @@
+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin freebsd linux netbsd openbsd
+
+package net
+
+import "syscall"
+
+func listenerSockaddr(s, f int, la syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (syscall.Sockaddr, error) {
+	a := toAddr(la)
+	if a == nil {
+		return la, nil
+	}
+	switch a := a.(type) {
+	case *TCPAddr, *UnixAddr:
+		if err := setDefaultListenerSockopts(s); err != nil {
+			return nil, err
+		}
+	case *UDPAddr:
+		if a.IP.IsMulticast() {
+			if err := setDefaultMulticastSockopts(s); err != nil {
+				return nil, err
+			}
+			switch f {
+			case syscall.AF_INET:
+				a.IP = IPv4zero
+			case syscall.AF_INET6:
+				a.IP = IPv6unspecified
+			}
+			return a.sockaddr(f)
+		}
+	}
+	return la, nil
+}