1 // Copyright 2013 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 #ifndef COMPONENTS_NACL_COMMON_NACL_HELPER_LINUX_H_ 6 #define COMPONENTS_NACL_COMMON_NACL_HELPER_LINUX_H_ 7 8 // A mini-zygote specifically for Native Client. This file defines 9 // constants used to implement communication between the nacl_helper 10 // process and the Chrome zygote. 11 12 // Used by Helper to tell Zygote it has started successfully. 13 #define kNaClHelperStartupAck "NACLHELPER_OK" 14 // Used by Zygote to ask Helper to fork a new NaCl loader. 15 #define kNaClForkRequest "NACLFORK" 16 17 // The next set of constants define global Linux file descriptors. 18 // For communications between NaCl loader and browser. 19 // See also content/common/zygote_main_linux.cc and 20 // http://code.google.com/p/chromium/wiki/LinuxZygote 21 22 // For communications between NaCl loader and zygote. 23 #define kNaClZygoteDescriptor 3 24 // For communications between the NaCl loader process and 25 // the SUID sandbox. 26 #define kNaClSandboxDescriptor 5 27 // NOTE: kNaClSandboxDescriptor must match 28 // content/browser/zygote_main_linux.cc 29 // kMagicSandboxIPCDescriptor. 30 31 // A fork request from the Zygote to the helper includes an array 32 // of three file descriptors. These constants are used as indicies 33 // into the array. 34 // Used to pass in the descriptor for talking to the Browser 35 #define kNaClBrowserFDIndex 0 36 // The next two are used in the protocol for discovering the 37 // child processes real PID from within the SUID sandbox. See 38 // http://code.google.com/p/chromium/wiki/LinuxZygote 39 #define kNaClDummyFDIndex 1 40 #define kNaClParentFDIndex 2 41 42 #endif // COMPONENTS_NACL_COMMON_NACL_HELPER_LINUX_H_ 43
