| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_COMMON_ZYGOTE_COMMANDS_LINUX_H_ |
| #define CONTENT_COMMON_ZYGOTE_COMMANDS_LINUX_H_ |
| |
| namespace content { |
| |
| // Contents of the initial message sent from the zygote to the browser when it |
| // is ready to go. |
| static const char kZygoteHelloMessage[] = "ZYGOTE_OK"; |
| |
| // Maximum allowable length for messages sent to the zygote. |
| const size_t kZygoteMaxMessageLength = 8192; |
| |
| // File descriptors initialized by the Zygote Host |
| const int kZygoteSocketPairFd = 3; |
| const int kZygoteRendererSocketFd = 5; |
| // This file descriptor is special. It is passed to the Zygote and a setuid |
| // helper will be called to locate the process of the Zygote on the system. |
| // This mechanism is used when multiple PID namespaces exist because of the |
| // setuid sandbox. |
| // It is very important that this file descriptor does not exist in multiple |
| // processes. |
| // This number must be kept in sync in sandbox/linux/suid/sandbox.c |
| const int kZygoteIdFd = 7; |
| |
| // These are the command codes used on the wire between the browser and the |
| // zygote. |
| enum { |
| // Fork off a new renderer. |
| kZygoteCommandFork = 0, |
| |
| // Reap a renderer child. |
| kZygoteCommandReap = 1, |
| |
| // Check what happened to a child process. |
| kZygoteCommandGetTerminationStatus = 2, |
| |
| // Read a bitmask of kSandboxLinux* |
| kZygoteCommandGetSandboxStatus = 3 |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_COMMON_ZYGOTE_COMMANDS_LINUX_H_ |