blob: ebfc6391f5d75bcf34868e7a97cfb86f8530634d [file] [log] [blame]
// Copyright 2019 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <sys/types.h>
#include <unistd.h>
#include <cstdlib>
#include <base/logging.h>
#include <brillo/flag_helper.h>
#include <brillo/syslog_logging.h>
#include <mojo/core/embedder/embedder.h>
#include <mojo/public/cpp/platform/platform_channel.h>
#include "diagnostics/cros_healthd/cros_healthd.h"
#include "diagnostics/cros_healthd/executor/executor.h"
#include "diagnostics/cros_healthd/minijail/minijail_configuration.h"
#include "diagnostics/cros_healthd/system/context.h"
int main(int argc, char** argv) {
argc, argv, "cros_healthd - Device telemetry and diagnostics daemon.");
brillo::InitLog(brillo::kLogToSyslog | brillo::kLogToStderrIfTty);
// Init the Mojo Embedder API here, since both the executor and cros_healthd
// use it.
// The parent and child processes will each keep one end of this message pipe
// and use it to bootstrap a Mojo connection to each other.
mojo::PlatformChannel channel;
// The root-level parent process will continue on as the executor, and the
// child will become the sandboxed cros_healthd daemon.
pid_t pid = fork();
if (pid == -1)
LOG(FATAL) << "Failed to fork.";
if (pid != 0) {
// Parent process:
if (getuid() != 0)
LOG(FATAL) << "Executor must run as root";
// Put the root-level executor in a light sandbox.
// Run the root-level executor.
return diagnostics::Executor(channel.TakeLocalEndpoint()).Run();
} else {
// Sandbox the child process.
// Set up the context cros_healthd will run in.
diagnostics::Context context{channel.TakeRemoteEndpoint()};
// Run the cros_healthd daemon.
return diagnostics::CrosHealthd(&context).Run();