1/* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef Attachment_h 27#define Attachment_h 28 29#if OS(DARWIN) 30#include <mach/mach_init.h> 31#include <mach/mach_traps.h> 32#endif 33 34namespace IPC { 35 36class ArgumentDecoder; 37class ArgumentEncoder; 38 39class Attachment { 40public: 41 Attachment(); 42 43 enum Type { 44 Uninitialized, 45#if OS(DARWIN) 46 MachPortType, 47#elif USE(UNIX_DOMAIN_SOCKETS) 48 SocketType, 49 MappedMemoryType 50#endif 51 }; 52 53#if OS(DARWIN) 54 Attachment(mach_port_name_t port, mach_msg_type_name_t disposition); 55#elif USE(UNIX_DOMAIN_SOCKETS) 56 Attachment(int fileDescriptor, size_t); 57 Attachment(int fileDescriptor); 58#endif 59 60 Type type() const { return m_type; } 61 62#if OS(DARWIN) 63 void release(); 64 65 // MachPortType 66 mach_port_name_t port() const { return m_port; } 67 mach_msg_type_name_t disposition() const { return m_disposition; } 68 69#elif USE(UNIX_DOMAIN_SOCKETS) 70 size_t size() const { return m_size; } 71 72 int releaseFileDescriptor() { int temp = m_fileDescriptor; m_fileDescriptor = -1; return temp; } 73 int fileDescriptor() const { return m_fileDescriptor; } 74 75 void dispose(); 76#endif 77 78 void encode(ArgumentEncoder&) const; 79 static bool decode(ArgumentDecoder&, Attachment&); 80 81private: 82 Type m_type; 83 84#if OS(DARWIN) 85 mach_port_name_t m_port; 86 mach_msg_type_name_t m_disposition; 87#elif USE(UNIX_DOMAIN_SOCKETS) 88 int m_fileDescriptor; 89 size_t m_size; 90#endif 91}; 92 93} // namespace IPC 94 95#endif // Attachment_h 96