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56 lines
2.2 KiB
C
56 lines
2.2 KiB
C
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// Copyright 2017 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_UTIL_WIN_SAFE_TERMINATE_PROCESS_H_
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#define CRASHPAD_UTIL_WIN_SAFE_TERMINATE_PROCESS_H_
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#include <windows.h>
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#include "build/build_config.h"
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namespace crashpad {
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//! \brief Calls `TerminateProcess()`.
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//!
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//! `TerminateProcess()` has been observed in the wild as being patched badly on
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//! 32-bit x86: it’s patched with code adhering to the `cdecl` (caller clean-up)
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//! convention, although it’s supposed to be `stdcall` (callee clean-up). The
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//! mix-up means that neither caller nor callee perform parameter clean-up from
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//! the stack, causing the stack pointer to have an unexpected value on return
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//! from the patched function. This typically results in a crash shortly
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//! thereafter. See <a href="https://crashpad.chromium.org/bug/179">Crashpad bug
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//! 179</a>.
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//!
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//! On 32-bit x86, this replacement function calls `TerminateProcess()` without
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//! making any assumptions about the stack pointer on its return. As such, it’s
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//! compatible with the badly patched `cdecl` version as well as the native
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//! `stdcall` version (and other less badly patched versions).
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//!
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//! Elsewhere, this function calls `TerminateProcess()` directly without any
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//! additional fanfare.
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//!
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//! Call this function instead of `TerminateProcess()` anywhere that
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//! `TerminateProcess()` would normally be called.
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bool SafeTerminateProcess(HANDLE process, UINT exit_code);
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#if !defined(ARCH_CPU_X86)
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inline bool SafeTerminateProcess(HANDLE process, UINT exit_code) {
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return TerminateProcess(process, exit_code) != FALSE;
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}
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#endif // !ARCH_CPU_X86
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_WIN_SAFE_TERMINATE_PROCESS_H_
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