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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /security/sandbox/chromium/base/process/process_handle.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'security/sandbox/chromium/base/process/process_handle.h')
-rw-r--r-- | security/sandbox/chromium/base/process/process_handle.h | 142 |
1 files changed, 142 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 0000000000..94f7006119 --- /dev/null +++ b/security/sandbox/chromium/base/process/process_handle.h @@ -0,0 +1,142 @@ +// 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 "base/win/windows_types.h" +#endif + +#if defined(OS_FUCHSIA) +#include <zircon/types.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_FUCHSIA) +typedef zx_handle_t ProcessHandle; +typedef zx_koid_t ProcessId; +const ProcessHandle kNullProcessHandle = ZX_HANDLE_INVALID; +const ProcessId kNullProcessId = ZX_KOID_INVALID; +#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) + +// To print ProcessIds portably use CrPRIdPid (based on PRIuS and friends from +// C99 and format_macros.h) like this: +// base::StringPrintf("PID is %" CrPRIdPid ".\n", pid); +#if defined(OS_WIN) || defined(OS_FUCHSIA) +#define CrPRIdPid "ld" +#else +#define CrPRIdPid "d" +#endif + +class UniqueProcId { + public: + explicit UniqueProcId(ProcessId value) : value_(value) {} + UniqueProcId(const UniqueProcId& other) = default; + UniqueProcId& operator=(const UniqueProcId& other) = default; + + // Returns the process PID. WARNING: On some platforms, the pid may not be + // valid within the current process sandbox. + ProcessId GetUnsafeValue() const { return value_; } + + bool operator==(const UniqueProcId& other) const { + return value_ == other.value_; + } + + bool operator!=(const UniqueProcId& other) const { + return value_ != other.value_; + } + + bool operator<(const UniqueProcId& other) const { + return value_ < other.value_; + } + + bool operator<=(const UniqueProcId& other) const { + return value_ <= other.value_; + } + + bool operator>(const UniqueProcId& other) const { + return value_ > other.value_; + } + + bool operator>=(const UniqueProcId& other) const { + return value_ >= other.value_; + } + + private: + ProcessId value_; +}; + +std::ostream& operator<<(std::ostream& os, const UniqueProcId& obj); + +// 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. +BASE_EXPORT UniqueProcId 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); + +#if !defined(OS_FUCHSIA) +// Returns the ID for the parent of the given process. Not available on Fuchsia. +// Returning a negative value indicates an error, such as if the |process| does +// not exist. Returns 0 when |process| has no parent process. +BASE_EXPORT ProcessId GetParentProcessId(ProcessHandle process); +#endif // !defined(OS_FUCHSIA) + +#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_ |