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/*
* Copyright (C) 2019 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 <stdint.h>
__BEGIN_DECLS
// For host builds, __INTRODUCED_IN is not defined.
#ifndef __INTRODUCED_IN
#define __INTRODUCED_IN(x)
#endif
struct ACgroupController;
typedef struct ACgroupController ACgroupController;
// ACgroupFile
/**
* Returns file version. See android::cgrouprc::format::CgroupFile for a list of valid versions
* for the file.
* If ACgroupFile_init() isn't called, initialization will be done first.
* If initialization failed, return 0.
*/
__attribute__((warn_unused_result)) uint32_t ACgroupFile_getVersion() __INTRODUCED_IN(29);
/**
* Returns the number of controllers.
* If ACgroupFile_init() isn't called, initialization will be done first.
* If initialization failed, return 0.
*/
__attribute__((warn_unused_result)) uint32_t ACgroupFile_getControllerCount() __INTRODUCED_IN(29);
/**
* Returns the controller at the given index.
* Returnss nullptr if the given index exceeds getControllerCount().
* If ACgroupFile_init() isn't called, initialization will be done first.
* If initialization failed, return 0.
*/
__attribute__((warn_unused_result)) const ACgroupController* ACgroupFile_getController(
uint32_t index) __INTRODUCED_IN(29);
// ACgroupController
/**
* Returns the version of the given controller.
* If the given controller is null, return 0.
*/
__attribute__((warn_unused_result)) uint32_t ACgroupController_getVersion(const ACgroupController*)
__INTRODUCED_IN(29);
/**
* Flag bitmask used in ACgroupController_getFlags
*/
#define CGROUPRC_CONTROLLER_FLAG_MOUNTED 0x1
#define CGROUPRC_CONTROLLER_FLAG_NEEDS_ACTIVATION 0x2
#define CGROUPRC_CONTROLLER_FLAG_OPTIONAL 0x4
/**
* Returns the flags bitmask of the given controller.
* If the given controller is null, return 0.
*/
__attribute__((warn_unused_result, weak)) uint32_t ACgroupController_getFlags(
const ACgroupController*) __INTRODUCED_IN(30);
/**
* Returns the name of the given controller.
* If the given controller is null, return nullptr.
*/
__attribute__((warn_unused_result)) const char* ACgroupController_getName(const ACgroupController*)
__INTRODUCED_IN(29);
/**
* Returns the path of the given controller.
* If the given controller is null, return nullptr.
*/
__attribute__((warn_unused_result)) const char* ACgroupController_getPath(const ACgroupController*)
__INTRODUCED_IN(29);
__END_DECLS
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