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 // This file is used to handle differences in Mach message IDs and structures 6 // that occur between different OS versions. The Mach messages that the sandbox 7 // is interested in are decoded using information derived from the open-source 8 // libraries, i.e. <http://www.opensource.apple.com/source/launchd/>. While 9 // these messages definitions are open source, they are not considered part of 10 // the stable OS API, and so differences do exist between OS versions. 11 12 #ifndef SANDBOX_MAC_OS_COMPATIBILITY_H_ 13 #define SANDBOX_MAC_OS_COMPATIBILITY_H_ 14 15 #include <mach/mach.h> 16 17 #include <string> 18 19 #include "sandbox/mac/message_server.h" 20 21 namespace sandbox { 22 23 typedef uint64_t (*IPCMessageGetID)(const IPCMessage); 24 25 typedef std::string (*LookUp2GetRequestName)(const IPCMessage); 26 typedef void (*LookUp2FillReply)(IPCMessage, mach_port_t service_port); 27 28 typedef bool (*SwapIntegerIsGetOnly)(const IPCMessage); 29 30 struct LaunchdCompatibilityShim { 31 // Gets the message ID of an IPC message. 32 IPCMessageGetID ipc_message_get_id; 33 34 // The msgh_id for look_up2. 35 uint64_t msg_id_look_up2; 36 37 // The msgh_id for swap_integer. 38 uint64_t msg_id_swap_integer; 39 40 // A function to take a look_up2 message and return the string service name 41 // that was requested via the message. 42 LookUp2GetRequestName look_up2_get_request_name; 43 44 // A function to formulate a reply to a look_up2 message, given the reply 45 // message and the port to return as the service. 46 LookUp2FillReply look_up2_fill_reply; 47 48 // A function to take a swap_integer message and return true if the message 49 // is only getting the value of a key, neither setting it directly, nor 50 // swapping two keys. 51 SwapIntegerIsGetOnly swap_integer_is_get_only; 52 }; 53 54 // Gets the compatibility shim for the launchd job subsystem. 55 const LaunchdCompatibilityShim GetLaunchdCompatibilityShim(); 56 57 } // namespace sandbox 58 59 #endif // SANDBOX_MAC_OS_COMPATIBILITY_H_ 60
