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Diffstat (limited to 'security/sandbox/chromium/base/process')
-rw-r--r-- | security/sandbox/chromium/base/process/process_handle.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/security/sandbox/chromium/base/process/process_handle.h b/security/sandbox/chromium/base/process/process_handle.h new file mode 100644 index 000000000..ef7a60255 --- /dev/null +++ b/security/sandbox/chromium/base/process/process_handle.h @@ -0,0 +1,81 @@ +// Copyright (c) 2013 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 BASE_PROCESS_PROCESS_HANDLE_H_ +#define BASE_PROCESS_PROCESS_HANDLE_H_ + +#include <stdint.h> +#include <sys/types.h> + +#include "base/base_export.h" +#include "base/files/file_path.h" +#include "build/build_config.h" + +#if defined(OS_WIN) +#include <windows.h> +#endif + +namespace base { + +// ProcessHandle is a platform specific type which represents the underlying OS +// handle to a process. +// ProcessId is a number which identifies the process in the OS. +#if defined(OS_WIN) +typedef HANDLE ProcessHandle; +typedef DWORD ProcessId; +typedef HANDLE UserTokenHandle; +const ProcessHandle kNullProcessHandle = NULL; +const ProcessId kNullProcessId = 0; +#elif defined(OS_POSIX) +// On POSIX, our ProcessHandle will just be the PID. +typedef pid_t ProcessHandle; +typedef pid_t ProcessId; +const ProcessHandle kNullProcessHandle = 0; +const ProcessId kNullProcessId = 0; +#endif // defined(OS_WIN) + +// Returns the id of the current process. +// Note that on some platforms, this is not guaranteed to be unique across +// processes (use GetUniqueIdForProcess if uniqueness is required). +BASE_EXPORT ProcessId GetCurrentProcId(); + +// Returns a unique ID for the current process. The ID will be unique across all +// currently running processes within the chrome session, but IDs of terminated +// processes may be reused. This returns an opaque value that is different from +// a process's PID. +BASE_EXPORT uint32_t GetUniqueIdForProcess(); + +#if defined(OS_LINUX) +// When a process is started in a different PID namespace from the browser +// process, this function must be called with the process's PID in the browser's +// PID namespace in order to initialize its unique ID. Not thread safe. +// WARNING: To avoid inconsistent results from GetUniqueIdForProcess, this +// should only be called very early after process startup - ideally as soon +// after process creation as possible. +BASE_EXPORT void InitUniqueIdForProcessInPidNamespace( + ProcessId pid_outside_of_namespace); +#endif + +// Returns the ProcessHandle of the current process. +BASE_EXPORT ProcessHandle GetCurrentProcessHandle(); + +// Returns the process ID for the specified process. This is functionally the +// same as Windows' GetProcessId(), but works on versions of Windows before Win +// XP SP1 as well. +// DEPRECATED. New code should be using Process::Pid() instead. +// Note that on some platforms, this is not guaranteed to be unique across +// processes. +BASE_EXPORT ProcessId GetProcId(ProcessHandle process); + +// Returns the ID for the parent of the given process. +BASE_EXPORT ProcessId GetParentProcessId(ProcessHandle process); + +#if defined(OS_POSIX) +// Returns the path to the executable of the given process. +BASE_EXPORT FilePath GetProcessExecutablePath(ProcessHandle process); +#endif + +} // namespace base + +#endif // BASE_PROCESS_PROCESS_HANDLE_H_ |