chromium/net/dns/dns_config_service_linux.h

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_DNS_DNS_CONFIG_SERVICE_LINUX_H_
#define NET_DNS_DNS_CONFIG_SERVICE_LINUX_H_

#include <memory>
#include <utility>

#include "base/check.h"
#include "base/gtest_prod_util.h"
#include "net/base/net_export.h"
#include "net/dns/dns_config_service.h"
#include "net/dns/nsswitch_reader.h"
#include "net/dns/public/resolv_reader.h"

namespace net {

// Use DnsConfigService::CreateSystemService to use it outside of tests.
namespace internal {

// Service for reading and watching Linux  DNS settings.
// This object is not thread-safe and methods may perform blocking I/O so
// methods must be called on a sequence that allows blocking (i.e.
// base::MayBlock). It may be constructed on a different sequence than which
// it's later called on. WatchConfig() must be called prior to ReadConfig().
class NET_EXPORT_PRIVATE DnsConfigServiceLinux : public DnsConfigService { … };

}  // namespace internal

}  // namespace net

#endif  // NET_DNS_DNS_CONFIG_SERVICE_LINUX_H_