Initial windows runtime work

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

sys/socket_unix.go

@@ -0,0 +1,36 @@
+// +build !windows
+
+package sys
+
+import (
+	"net"
+	"os"
+	"path/filepath"
+	"syscall"
+)
+
+// CreateUnixSocket creates a unix socket and returns the listener
+func CreateUnixSocket(path string) (net.Listener, error) {
+	if err := os.MkdirAll(filepath.Dir(path), 0660); err != nil {
+		return nil, err
+	}
+	if err := syscall.Unlink(path); err != nil && !os.IsNotExist(err) {
+		return nil, err
+	}
+	return net.Listen("unix", path)
+}
+
+// GetLocalListener returns a listerner out of a unix socket.
+func GetLocalListener(path string, uid, gid int) (net.Listener, error) {
+	l, err := CreateUnixSocket(path)
+	if err != nil {
+		return l, err
+	}
+
+	if err := os.Chown(path, uid, gid); err != nil {
+		l.Close()
+		return nil, err
+	}
+
+	return l, nil
+}