components/nacl/common/nacl_helper_linux.h - Issue 24449002: NaCl: Clean up how FDs are passed to nacl_helper instances on Linux

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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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