android-34/android/system/StructCapUserData.java

/*
 * Copyright (C) 2017 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.
 */

package android.system;

import static android.annotation.SystemApi.Client.MODULE_LIBRARIES;

import android.annotation.SystemApi;

import libcore.util.Objects;

/**
 * Corresponds to Linux' __user_cap_data_struct for capget and capset.
 * Used in {@link Os.capget(StructCapUserHeader)} and
 * {@link Os.capset(StructCapUserHeader, StructCapUserData[])}.
 *
 * See <a href="https://man7.org/linux/man-pages/man2/capget.2.html">capget(2)</a>.
 *
 * @hide
 */
@SystemApi(client = MODULE_LIBRARIES)
public final class StructCapUserData {
    /**
     * Effective capability mask.
     *
     * @hide
     */
    @SystemApi(client = MODULE_LIBRARIES)
    public final int effective; /* __u32 */

    /**
     * Permitted capability mask.
     *
     * @hide
     */
    @SystemApi(client = MODULE_LIBRARIES)
    public final int permitted; /* __u32 */

    /**
     * Inheritable capability mask.
     *
     * @hide
     */
    @SystemApi(client = MODULE_LIBRARIES)
    public final int inheritable; /* __u32 */

    /**
     * Constructs an instance with the given field values.
     *
     * @param effective   effective capability mask
     * @param permitted   permitted capability mask
     * @param inheritable inheritable capability mask
     *
     * @hide
     */
    @SystemApi(client = MODULE_LIBRARIES)
    public StructCapUserData(int effective, int permitted, int inheritable) {
        this.effective = effective;
        this.permitted = permitted;
        this.inheritable = inheritable;
    }

    /**
     * @hide
     */
    @Override public String toString() {
        return Objects.toString(this);
    }
}