Raw SocketDescriptor variant of UnixDomainServerSocket::Accept

net/socket/unix_domain_server_socket_posix.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SOCKET_UNIX_DOMAIN_SERVER_SOCKET_POSIX_H_
 #define NET_SOCKET_UNIX_DOMAIN_SERVER_SOCKET_POSIX_H_
 
 #include <sys/types.h>
 
 #include <string>
@@ skipping 41 matching lines @@
 
   // ServerSocket implementation.
   virtual int Listen(const IPEndPoint& address, int backlog) OVERRIDE;
   virtual int ListenWithAddressAndPort(const std::string& unix_domain_path,
                                        int port_unused,
                                        int backlog) OVERRIDE;
   virtual int GetLocalAddress(IPEndPoint* address) const OVERRIDE;
   virtual int Accept(scoped_ptr<StreamSocket>* socket,
                      const CompletionCallback& callback) OVERRIDE;
 
+  // Accepts an incoming connection on |listen_socket_|, but passes back
+  // a raw SocketDescriptor instead of a StreamSocket.
+  int AcceptSocketDescriptor(SocketDescriptor* socket_descriptor,
+                             const CompletionCallback& callback);
+
  private:
-  void AcceptCompleted(scoped_ptr<StreamSocket>* socket,
+  // A callback to wrap the setting of the out-parameter to Accept().
+  // This allows the internal machinery of that call to be implemented in
+  // a manner that's agnostic to the caller's desired output.
+  typedef base::Callback<void(scoped_ptr<SocketLibevent>)> SetterCallback;
+
+  int DoAccept(const SetterCallback& setter_callback,
+               const CompletionCallback& callback);
+  void AcceptCompleted(const SetterCallback& setter_callback,
                        const CompletionCallback& callback,
                        int rv);
-  bool AuthenticateAndGetStreamSocket(scoped_ptr<StreamSocket>* socket);
+  bool AuthenticateAndGetStreamSocket(const SetterCallback& setter_callback);
 
   scoped_ptr<SocketLibevent> listen_socket_;
   const AuthCallback auth_callback_;
   const bool use_abstract_namespace_;
 
   scoped_ptr<SocketLibevent> accept_socket_;
 
   DISALLOW_COPY_AND_ASSIGN(UnixDomainServerSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_UNIX_DOMAIN_SOCKET_POSIX_H_