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Side by Side Diff: components/nacl/common/nacl_helper_linux.h

Issue 24449002: NaCl: Clean up how FDs are passed to nacl_helper instances on Linux (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Review - cleanup Created 7 years, 2 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef COMPONENTS_NACL_COMMON_NACL_HELPER_LINUX_H_ 5 #ifndef COMPONENTS_NACL_COMMON_NACL_HELPER_LINUX_H_
6 #define COMPONENTS_NACL_COMMON_NACL_HELPER_LINUX_H_ 6 #define COMPONENTS_NACL_COMMON_NACL_HELPER_LINUX_H_
7 7
8 // A mini-zygote specifically for Native Client. This file defines 8 // A mini-zygote specifically for Native Client. This file defines
9 // constants used to implement communication between the nacl_helper 9 // constants used to implement communication between the nacl_helper
10 // process and the Chrome zygote. 10 // process and the Chrome zygote.
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26 26
27 // For communications between NaCl loader and zygote. 27 // For communications between NaCl loader and zygote.
28 #define kNaClZygoteDescriptor 3 28 #define kNaClZygoteDescriptor 3
29 // For communications between the NaCl loader process and 29 // For communications between the NaCl loader process and
30 // the SUID sandbox. 30 // the SUID sandbox.
31 #define kNaClSandboxDescriptor 5 31 #define kNaClSandboxDescriptor 5
32 // NOTE: kNaClSandboxDescriptor must match 32 // NOTE: kNaClSandboxDescriptor must match
33 // content/browser/zygote_main_linux.cc 33 // content/browser/zygote_main_linux.cc
34 // kMagicSandboxIPCDescriptor. 34 // kMagicSandboxIPCDescriptor.
35 35
36 // A fork request from the Zygote to the helper includes an array
37 // of three file descriptors. These constants are used as indicies
38 // into the array.
39 // Used to pass in the descriptor for talking to the Browser
40 #define kNaClBrowserFDIndex 0
41 // The next two are used in the protocol for discovering the
42 // child processes real PID from within the SUID sandbox. See
43 // http://code.google.com/p/chromium/wiki/LinuxZygote
44 #define kNaClDummyFDIndex 1
45 #define kNaClParentFDIndex 2
46
47 #endif // COMPONENTS_NACL_COMMON_NACL_HELPER_LINUX_H_ 36 #endif // COMPONENTS_NACL_COMMON_NACL_HELPER_LINUX_H_
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