chromium/sandbox/linux/syscall_broker/broker_simple_message.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SANDBOX_LINUX_SYSCALL_BROKER_BROKER_SIMPLE_MESSAGE_H_
#define SANDBOX_LINUX_SYSCALL_BROKER_BROKER_SIMPLE_MESSAGE_H_

#include <stdint.h>
#include <sys/types.h>

#include "base/containers/span.h"
#include "base/files/scoped_file.h"
#include "base/memory/raw_ptr_exclusion.h"
#include "sandbox/sandbox_export.h"

namespace sandbox {
namespace syscall_broker {

// This class is meant to provide a very simple messaging mechanism that is
// signal-safe for the broker to utilize. This addresses many of the issues
// outlined in https://crbug.com/255063. In short, the use of the standard
// base::UnixDomainSockets is not possible because it uses base::Pickle and
// std::vector, which are not signal-safe.
//
// In implementation, much of the code for sending and receiving is taken from
// base::UnixDomainSockets and re-used below. Thus, ultimately, it might be
// worthwhile making a first-class base-supported signal-safe set of mechanisms
// that reduces the code duplication.
class SANDBOX_EXPORT BrokerSimpleMessage { … };

}  // namespace syscall_broker
}  // namespace sandbox

#endif  // SANDBOX_LINUX_SYSCALL_BROKER_BROKER_SIMPLE_MESSAGE_H_