platform_system_core/init/property_service.h
Tom Cherry fe8154175c init: simplify async restorecon
In the future, property service may run in its own thread or process,
which means that PropertyChildReap() needs to be refactored to not run
as part of the init signal handler.

The new method spawns a new thread that handles the queue of paths
that require restorecon. It then communicates back to property service
via android::base::SetProperty(). Property service distinguishes the
thread from other callers of SetProperty() by checking the pid in the
credentials for the socket connection, thus avoiding dependencies on
the rest of init.

The new method also drops the genericness, since restorecon is the
only function that we should ever need to run asynchronously

Test: async restorecon works, including with queued requests
Change-Id: I2ca00459969e77b1820776dac23d0a0d974e330b
2019-04-24 08:50:10 -07:00

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/*
* Copyright (C) 2007 The Android Open Source Project
*
* 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.
*/
#pragma once
#include <sys/socket.h>
#include <string>
#include "epoll.h"
namespace android {
namespace init {
bool CanReadProperty(const std::string& source_context, const std::string& name);
extern uint32_t (*property_set)(const std::string& name, const std::string& value);
uint32_t HandlePropertySet(const std::string& name, const std::string& value,
const std::string& source_context, const ucred& cr, std::string* error);
void property_init();
void property_load_boot_defaults(bool load_debug_prop);
void load_persist_props();
void StartPropertyService(Epoll* epoll);
} // namespace init
} // namespace android