/*
 * 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.
 */

#include <fcntl.h>
#include <linux/types.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <unistd.h>
#include "functionalext.h"

const int SUCCESS = 0;
const int FAILED = -1;

/**
 * @tc.name      : flock_0100
 * @tc.desc      : Each parameter is valid, the op parameter is LOCK_SH, which can lock the file
 * @tc.level     : Level 0
 */
void flock_0100()
{
    int fd = -1;
    int result = -1;
    fd = open("/data/test.txt", O_RDWR | O_CREAT, 0666);
    lseek(fd, 2, SEEK_SET);
    if (fd < 0) {
        printf("open failed!\n");
        return;
    }
    result = flock(fd, LOCK_SH);
    EXPECT_EQ("flock_0100", result, SUCCESS);
    close(fd);
    system("rm -rf /data/test.txt");
}

/**
 * @tc.name      : flock_0200
 * @tc.desc      : Each parameter is valid, the op parameter is LOCK_SH|LOCK_NB, which can lock the file
 * @tc.level     : Level 1
 */
void flock_0200()
{
    int fd = -1;
    int result = -1;
    fd = open("/data/test.txt", O_RDWR | O_CREAT, 0666);
    lseek(fd, 2, SEEK_SET);
    if (fd < 0) {
        printf("open failed!\n");
        return;
    }
    result = flock(fd, LOCK_SH | LOCK_NB);
    EXPECT_EQ("flock_0200", result, SUCCESS);
    close(fd);
    system("rm -rf /data/test.txt");
}

/**
 * @tc.name      : flock_0300
 * @tc.desc      : Each parameter is valid, the op parameter is LOCK_EX, which can lock the file
 * @tc.level     : Level 0
 */
void flock_0300()
{
    int fd = -1;
    int result = -1;
    fd = open("/data/test.txt", O_RDWR | O_CREAT, 0666);
    lseek(fd, 2, SEEK_SET);
    if (fd < 0) {
        printf("open failed!\n");
        return;
    }
    result = flock(fd, LOCK_EX);
    EXPECT_EQ("flock_0300", result, SUCCESS);
    close(fd);
    system("rm -rf /data/test.txt");
}

/**
 * @tc.name      : flock_0400
 * @tc.desc      : Each parameter is valid, the op parameter is LOCK_EX|LOCK_NB, which can lock the file
 * @tc.level     : Level 1
 */
void flock_0400()
{
    int fd = -1;
    int result = -1;
    fd = open("/data/test.txt", O_RDWR | O_CREAT, 0666);
    lseek(fd, 2, SEEK_SET);
    if (fd < 0) {
        printf("open failed!\n");
        return;
    }
    result = flock(fd, LOCK_EX | LOCK_NB);
    EXPECT_EQ("flock_0400", result, SUCCESS);
    close(fd);
    system("rm -rf /data/test.txt");
}

/**
 * @tc.name      : flock_0500
 * @tc.desc      : Each parameter is valid, the op parameter is LOCK_UN, which can release the file lock state
 * @tc.level     : Level 0
 */
void flock_0500()
{
    int fd = -1;
    int result = -1;
    fd = open("/data/test.txt", O_RDWR | O_CREAT, 0666);
    lseek(fd, 2, SEEK_SET);
    if (fd < 0) {
        printf("open failed!\n");
        return;
    }
    result = flock(fd, LOCK_UN);
    EXPECT_EQ("flock_0500", result, SUCCESS);
    close(fd);
    system("rm -rf /data/test.txt");
}

/**
 * @tc.name      : flock_0600
 * @tc.desc      : The fd parameter is invalid, the file cannot be locked
 * @tc.level     : Level 2
 */
void flock_0600()
{
    int fd = -1;
    int result = 0;
    result = flock(fd, LOCK_EX);
    EXPECT_EQ("flock_0600", result, FAILED);
    close(fd);
}

/**
 * @tc.name      : flock_0700
 * @tc.desc      : The op parameter is invalid, the file cannot be locked
 * @tc.level     : Level 2
 */
void flock_0700()
{
    int fd = -1;
    int result = 0;
    fd = open("/data/test.txt", O_RDWR | O_CREAT, 0666);
    lseek(fd, 2, SEEK_SET);
    if (fd < 0) {
        printf("open failed!\n");
        return;
    }
    result = flock(fd, 0);
    EXPECT_EQ("flock_0700", result, FAILED);
    close(fd);
    system("rm -rf /data/test.txt");
}

int main()
{
    flock_0100();
    flock_0200();
    flock_0300();
    flock_0400();
    flock_0500();
    flock_0600();
    flock_0700();
    return t_status;
}