97 lines
3.5 KiB
C
97 lines
3.5 KiB
C
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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_PROCESS_PROCESS_HANDLE_H_
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#define BASE_PROCESS_PROCESS_HANDLE_H_
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#include "base/base_export.h"
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#include "base/basictypes.h"
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#include "base/files/file_path.h"
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#include "build/build_config.h"
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#include <sys/types.h>
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#if defined(OS_WIN)
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#include <windows.h>
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#endif
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namespace base {
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// ProcessHandle is a platform specific type which represents the underlying OS
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// handle to a process.
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// ProcessId is a number which identifies the process in the OS.
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#if defined(OS_WIN)
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typedef HANDLE ProcessHandle;
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typedef DWORD ProcessId;
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typedef HANDLE UserTokenHandle;
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const ProcessHandle kNullProcessHandle = NULL;
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const ProcessId kNullProcessId = 0;
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#elif defined(OS_POSIX)
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// On POSIX, our ProcessHandle will just be the PID.
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typedef pid_t ProcessHandle;
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typedef pid_t ProcessId;
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const ProcessHandle kNullProcessHandle = 0;
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const ProcessId kNullProcessId = 0;
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#endif // defined(OS_WIN)
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// Returns the id of the current process.
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BASE_EXPORT ProcessId GetCurrentProcId();
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// Returns the ProcessHandle of the current process.
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BASE_EXPORT ProcessHandle GetCurrentProcessHandle();
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// Converts a PID to a process handle. This handle must be closed by
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// CloseProcessHandle when you are done with it. Returns true on success.
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BASE_EXPORT bool OpenProcessHandle(ProcessId pid, ProcessHandle* handle);
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// Converts a PID to a process handle. On Windows the handle is opened
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// with more access rights and must only be used by trusted code.
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// You have to close returned handle using CloseProcessHandle. Returns true
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// on success.
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// TODO(sanjeevr): Replace all calls to OpenPrivilegedProcessHandle with the
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// more specific OpenProcessHandleWithAccess method and delete this.
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BASE_EXPORT bool OpenPrivilegedProcessHandle(ProcessId pid,
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ProcessHandle* handle);
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// Converts a PID to a process handle using the desired access flags. Use a
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// combination of the kProcessAccess* flags defined above for |access_flags|.
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BASE_EXPORT bool OpenProcessHandleWithAccess(ProcessId pid,
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uint32 access_flags,
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ProcessHandle* handle);
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// Closes the process handle opened by OpenProcessHandle.
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BASE_EXPORT void CloseProcessHandle(ProcessHandle process);
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// Returns the unique ID for the specified process. This is functionally the
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// same as Windows' GetProcessId(), but works on versions of Windows before
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// Win XP SP1 as well.
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BASE_EXPORT ProcessId GetProcId(ProcessHandle process);
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#if defined(OS_WIN)
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enum IntegrityLevel {
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INTEGRITY_UNKNOWN,
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LOW_INTEGRITY,
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MEDIUM_INTEGRITY,
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HIGH_INTEGRITY,
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};
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// Determine the integrity level of the specified process. Returns false
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// if the system does not support integrity levels (pre-Vista) or in the case
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// of an underlying system failure.
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BASE_EXPORT bool GetProcessIntegrityLevel(ProcessHandle process,
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IntegrityLevel* level);
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#endif
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#if defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_BSD)
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// Returns the path to the executable of the given process.
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BASE_EXPORT FilePath GetProcessExecutablePath(ProcessHandle process);
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#endif
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#if defined(OS_POSIX)
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// Returns the ID for the parent of the given process.
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BASE_EXPORT ProcessId GetParentProcessId(ProcessHandle process);
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#endif
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} // namespace base
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#endif // BASE_PROCESS_PROCESS_HANDLE_H_
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