/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * 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.
 */

#ifndef SELINUX_PARAMETER_H
#define SELINUX_PARAMETER_H

#include <sys/socket.h>

#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif

typedef struct ParameterNode {
    char *paraName;
    char *paraContext;
} ParameterNode;

typedef struct ParamContextsList {
    struct ParameterNode info;
    struct ParamContextsList *next;
} ParamContextsList;

/**
 * @brief set selinux log print to dmesg
 */
void SetSelinuxLogCallback(void);

/**
 * @brief get param context list, for context-named files generate
 * free with DestroyParamList
 *
 * @return head of param context list
 */
ParamContextsList *GetParamList(void);

/**
 * @brief destroy param list get from GetParamList
 *
 * @param list the head of contexts list
 */
void DestroyParamList(ParamContextsList **list);

/**
 * @brief for a particular paraName, get its context
 *
 * @param paraName the name of param
 * @param context the selinux context of param, must free it after use
 *
 * @return 0 for success, or an error code
 */
int GetParamLabel(const char *paraName, char **context);

/**
 * @brief for read particular paraName, check its selinux permmisson
 *
 * @param paraName the name of param
 * @return 0 for success, or an error code
 */
int ReadParamCheck(const char *paraName);

/**
 * @brief for write particular paraName, get its context
 *
 * @param paraName the name of param
 * @param uc contains pid, uid, gid info
 * @return 0 for success, or an error code
 */
int SetParamCheck(const char *paraName, struct ucred *uc);

#ifdef __cplusplus
#if __cplusplus
}
#endif /* __cplusplus */
#endif /* __cplusplus */

#endif // SELINUX_PARAMETER_H