1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "sandbox/linux/syscall_broker/broker_channel.h" 6 7 #include <sys/socket.h> 8 #include <sys/types.h> 9 10 #include "base/logging.h" 11 12 namespace sandbox { 13 14 namespace syscall_broker { 15 16 // static CreatePair(EndPoint * reader,EndPoint * writer)17void BrokerChannel::CreatePair(EndPoint* reader, EndPoint* writer) { 18 DCHECK(reader); 19 DCHECK(writer); 20 int socket_pair[2]; 21 // Use SOCK_SEQPACKET, to preserve message boundaries but we also want to be 22 // notified (recvmsg should return and not block) when the connection has 23 // been broken which could mean that the other end has been closed. 24 PCHECK(0 == socketpair(AF_UNIX, SOCK_SEQPACKET, 0, socket_pair)); 25 26 reader->reset(socket_pair[0]); 27 PCHECK(0 == shutdown(reader->get(), SHUT_WR)); 28 29 writer->reset(socket_pair[1]); 30 PCHECK(0 == shutdown(writer->get(), SHUT_RD)); 31 } 32 33 } // namespace syscall_broker 34 35 } // namespace sandbox 36