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sed -i '' -E -e 's/Copyright (.+) The Crashpad Authors\. All rights reserved\.$/Copyright \1 The Crashpad Authors/' $(git grep -El 'Copyright (.+) The Crashpad Authors\. All rights reserved\.$') Bug: chromium:1098010 Change-Id: I8d6138469ddbe3d281a5d83f64cf918ec2491611 Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3878262 Reviewed-by: Joshua Peraza <jperaza@chromium.org> Commit-Queue: Mark Mentovai <mark@chromium.org>
92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
// Copyright 2015 The Crashpad Authors
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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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#include <malloc.h>
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#include <stdlib.h>
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#include <windows.h>
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#include <winternl.h>
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#include "base/logging.h"
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#include "client/crashpad_client.h"
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#include "snapshot/win/process_reader_win.h"
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namespace crashpad {
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namespace {
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// We VirtualFree a region in ourselves (the stack) to confirm that the
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// exception reporter captures as much as possible in the minidump and doesn't
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// abort. __debugbreak() immediately after doing so because the process is
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// clearly in a very broken state at this point.
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bool FreeOwnStackAndBreak() {
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ProcessReaderWin process_reader;
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if (!process_reader.Initialize(GetCurrentProcess(),
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ProcessSuspensionState::kRunning)) {
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LOG(ERROR) << "ProcessReaderWin Initialize";
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return false;
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}
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const std::vector<ProcessReaderWin::Thread> threads =
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process_reader.Threads();
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if (threads.empty()) {
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LOG(ERROR) << "no threads";
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return false;
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}
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// Push the stack up a bit so that hopefully the crash handler can succeed,
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// but won't be able to read the base of the stack.
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_alloca(16384);
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// We can't succeed at MEM_RELEASEing this memory, but MEM_DECOMMIT is good
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// enough to make it inaccessible.
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if (!VirtualFree(reinterpret_cast<void*>(threads[0].stack_region_address),
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100,
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MEM_DECOMMIT)) {
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PLOG(ERROR) << "VirtualFree";
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return false;
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}
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// If the VirtualFree() succeeds, we may have already crashed. __debugbreak()
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// just to be sure.
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__debugbreak();
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return true;
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}
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int SelfDestroyingMain(int argc, wchar_t* argv[]) {
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if (argc != 2) {
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fprintf(stderr, "Usage: %ls <server_pipe_name>\n", argv[0]);
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return EXIT_FAILURE;
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}
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CrashpadClient client;
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if (!client.SetHandlerIPCPipe(argv[1])) {
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LOG(ERROR) << "SetHandler";
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return EXIT_FAILURE;
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}
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if (!FreeOwnStackAndBreak())
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return EXIT_FAILURE;
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// This will never be reached. On success, we'll have crashed above, or
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// otherwise returned before here.
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return EXIT_SUCCESS;
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}
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} // namespace
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} // namespace crashpad
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int wmain(int argc, wchar_t* argv[]) {
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return crashpad::SelfDestroyingMain(argc, argv);
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}
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