96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <sys/cdefs.h>
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#include <stdint.h>
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__BEGIN_DECLS
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// For host builds, __INTRODUCED_IN is not defined.
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#ifndef __INTRODUCED_IN
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#define __INTRODUCED_IN(x)
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#endif
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struct ACgroupController;
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typedef struct ACgroupController ACgroupController;
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// ACgroupFile
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/**
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* Returns file version. See android::cgrouprc::format::CgroupFile for a list of valid versions
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* for the file.
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* If ACgroupFile_init() isn't called, initialization will be done first.
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* If initialization failed, return 0.
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*/
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__attribute__((warn_unused_result)) uint32_t ACgroupFile_getVersion() __INTRODUCED_IN(29);
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/**
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* Returns the number of controllers.
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* If ACgroupFile_init() isn't called, initialization will be done first.
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* If initialization failed, return 0.
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*/
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__attribute__((warn_unused_result)) uint32_t ACgroupFile_getControllerCount() __INTRODUCED_IN(29);
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/**
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* Returns the controller at the given index.
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* Returnss nullptr if the given index exceeds getControllerCount().
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* If ACgroupFile_init() isn't called, initialization will be done first.
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* If initialization failed, return 0.
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*/
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__attribute__((warn_unused_result)) const ACgroupController* ACgroupFile_getController(
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uint32_t index) __INTRODUCED_IN(29);
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// ACgroupController
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/**
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* Returns the version of the given controller.
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* If the given controller is null, return 0.
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*/
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__attribute__((warn_unused_result)) uint32_t ACgroupController_getVersion(const ACgroupController*)
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__INTRODUCED_IN(29);
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/**
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* Flag bitmask used in ACgroupController_getFlags
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*/
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#define CGROUPRC_CONTROLLER_FLAG_MOUNTED 0x1
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#define CGROUPRC_CONTROLLER_FLAG_NEEDS_ACTIVATION 0x2
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#define CGROUPRC_CONTROLLER_FLAG_OPTIONAL 0x4
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/**
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* Returns the flags bitmask of the given controller.
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* If the given controller is null, return 0.
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*/
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__attribute__((warn_unused_result, weak)) uint32_t ACgroupController_getFlags(
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const ACgroupController*) __INTRODUCED_IN(30);
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/**
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* Returns the name of the given controller.
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* If the given controller is null, return nullptr.
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*/
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__attribute__((warn_unused_result)) const char* ACgroupController_getName(const ACgroupController*)
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__INTRODUCED_IN(29);
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/**
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* Returns the path of the given controller.
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* If the given controller is null, return nullptr.
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*/
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__attribute__((warn_unused_result)) const char* ACgroupController_getPath(const ACgroupController*)
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__INTRODUCED_IN(29);
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__END_DECLS
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