1 files changed, 83 insertions, 0 deletions
diff --git a/libgo/go/net/sock_posix.go b/libgo/go/net/sock_posix.go
new file mode 100644
index 000000000000..dc5247a7f38e
--- /dev/null
+++ b/libgo/go/net/sock_posix.go
@@ -0,0 +1,83 @@
+// 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 windows
+
+// Sockets
+
+package net
+
+import (
+	"io"
+	"syscall"
+)
+
+var listenerBacklog = maxListenerBacklog()
+
+// Generic socket creation.
+func socket(net string, f, t, p int, ipv6only bool, ulsa, ursa syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (fd *netFD, err error) {
+	// See ../syscall/exec_unix.go for description of ForkLock.
+	syscall.ForkLock.RLock()
+	s, err := syscall.Socket(f, t, p)
+	if err != nil {
+		syscall.ForkLock.RUnlock()
+		return nil, err
+	}
+	syscall.CloseOnExec(s)
+	syscall.ForkLock.RUnlock()
+
+	if err = setDefaultSockopts(s, f, t, ipv6only); err != nil {
+		closesocket(s)
+		return nil, err
+	}
+
+	var blsa syscall.Sockaddr
+	if ulsa != nil {
+		if blsa, err = listenerSockaddr(s, f, ulsa, toAddr); err != nil {
+			closesocket(s)
+			return nil, err
+		}
+		if err = syscall.Bind(s, blsa); err != nil {
+			closesocket(s)
+			return nil, err
+		}
+	}
+
+	if fd, err = newFD(s, f, t, net); err != nil {
+		closesocket(s)
+		return nil, err
+	}
+
+	if ursa != nil {
+		if err = fd.connect(ursa); err != nil {
+			closesocket(s)
+			fd.Close()
+			return nil, err
+		}
+		fd.isConnected = true
+	}
+
+	lsa, _ := syscall.Getsockname(s)
+	var laddr Addr
+	if ulsa != nil && blsa != ulsa {
+		laddr = toAddr(ulsa)
+	} else {
+		laddr = toAddr(lsa)
+	}
+	rsa, _ := syscall.Getpeername(s)
+	raddr := toAddr(rsa)
+	fd.setAddr(laddr, raddr)
+	return fd, nil
+}
+
+type writerOnly struct {
+	io.Writer
+}
+
+// Fallback implementation of io.ReaderFrom's ReadFrom, when sendfile isn't
+// applicable.
+func genericReadFrom(w io.Writer, r io.Reader) (n int64, err error) {
+	// Use wrapper to hide existing r.ReadFrom from io.Copy.
+	return io.Copy(writerOnly{w}, r)
+}