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 namespace sandbox { 20 21 typedef std::string (*LookUp2GetRequestName)(const mach_msg_header_t*); 22 typedef void (*LookUp2FillReply)(mach_msg_header_t*, mach_port_t service_port); 23 24 typedef bool (*SwapIntegerIsGetOnly)(const mach_msg_header_t*); 25 26 struct LaunchdCompatibilityShim { 27 // The msgh_id for look_up2. 28 mach_msg_id_t msg_id_look_up2; 29 30 // The msgh_id for swap_integer. 31 mach_msg_id_t msg_id_swap_integer; 32 33 // A function to take a look_up2 message and return the string service name 34 // that was requested via the message. 35 LookUp2GetRequestName look_up2_get_request_name; 36 37 // A function to formulate a reply to a look_up2 message, given the reply 38 // message and the port to return as the service. 39 LookUp2FillReply look_up2_fill_reply; 40 41 // A function to take a swap_integer message and return true if the message 42 // is only getting the value of a key, neither setting it directly, nor 43 // swapping two keys. 44 SwapIntegerIsGetOnly swap_integer_is_get_only; 45 }; 46 47 // Gets the compatibility shim for the launchd job subsystem. 48 const LaunchdCompatibilityShim GetLaunchdCompatibilityShim(); 49 50 } // namespace sandbox 51 52 #endif // SANDBOX_MAC_OS_COMPATIBILITY_H_ 53
