mirror of
https://github.com/google/sandboxed-api.git
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61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
// Copyright 2019 Google LLC
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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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// https://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 "sandboxed_api/sandbox2/logsink.h"
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#include <unistd.h>
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#include <csignal>
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#include <iostream>
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#include <string>
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#include "absl/strings/str_cat.h"
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#include "absl/synchronization/mutex.h"
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#include "sandboxed_api/sandbox2/logserver.pb.h"
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namespace sandbox2 {
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constexpr char LogSink::kLogFDName[];
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LogSink::LogSink(int fd) : comms_(fd) { AddLogSink(this); }
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LogSink::~LogSink() { RemoveLogSink(this); }
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void LogSink::send(google::LogSeverity severity, const char* full_filename,
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const char* base_filename, int line,
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const struct tm* tm_time, const char* message,
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size_t message_len) {
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absl::MutexLock l(&lock_);
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LogMessage msg;
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msg.set_severity(static_cast<int>(severity));
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msg.set_path(base_filename);
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msg.set_line(line);
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msg.set_message(absl::StrCat(absl::string_view{message, message_len}, "\n"));
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msg.set_pid(getpid());
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if (!comms_.SendProtoBuf(msg)) {
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std::cerr << "sending log message to supervisor failed: " << std::endl
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<< msg.DebugString() << std::endl;
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}
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if (severity == google::FATAL) {
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// Raise a SIGABRT to prevent the remaining code in logging to try to dump a
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// symbolized stack trace which can lead to syscall violations.
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kill(0, SIGABRT);
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}
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}
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} // namespace sandbox2
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