crashpad/util/win/registration_protocol_win.cc
Scott Graham ff274507dc win: Only retry in UseHandler() loop on ERROR_PIPE_BUSY
This is better because now end_to_end_test.py fails immediately with

[1180:9020:20151106,145204.830:ERROR registration_protocol_win.cc:39] CreateFile: The system cannot find the file specified.  (0x2)

R=mark@chromium.org
BUG=crashpad:75

Review URL: https://codereview.chromium.org/1409693011 .
2015-11-06 15:54:48 -08:00

81 lines
2.5 KiB
C++

// Copyright 2015 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "util/win/registration_protocol_win.h"
#include <windows.h>
#include "base/logging.h"
#include "util/win/scoped_handle.h"
namespace crashpad {
bool SendToCrashHandlerServer(const base::string16& pipe_name,
const crashpad::ClientToServerMessage& message,
crashpad::ServerToClientMessage* response) {
int tries = 0;
for (;;) {
ScopedFileHANDLE pipe(
CreateFile(pipe_name.c_str(),
GENERIC_READ | GENERIC_WRITE,
0,
nullptr,
OPEN_EXISTING,
SECURITY_SQOS_PRESENT | SECURITY_IDENTIFICATION,
nullptr));
if (!pipe.is_valid()) {
if (++tries == 5 || GetLastError() != ERROR_PIPE_BUSY) {
PLOG(ERROR) << "CreateFile";
return false;
}
if (!WaitNamedPipe(pipe_name.c_str(), 1000) &&
GetLastError() != ERROR_SEM_TIMEOUT) {
PLOG(ERROR) << "WaitNamedPipe";
return false;
}
continue;
}
DWORD mode = PIPE_READMODE_MESSAGE;
if (!SetNamedPipeHandleState(pipe.get(), &mode, nullptr, nullptr)) {
PLOG(ERROR) << "SetNamedPipeHandleState";
return false;
}
DWORD bytes_read = 0;
BOOL result = TransactNamedPipe(
pipe.get(),
// This is [in], but is incorrectly declared non-const.
const_cast<crashpad::ClientToServerMessage*>(&message),
sizeof(message),
response,
sizeof(*response),
&bytes_read,
nullptr);
if (!result) {
LOG(ERROR) << "TransactNamedPipe: expected " << sizeof(*response)
<< ", observed " << bytes_read;
return false;
}
if (bytes_read != sizeof(*response)) {
LOG(ERROR) << "TransactNamedPipe read incorrect number of bytes";
return false;
}
return true;
}
}
} // namespace crashpad