1/*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *   http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <errno.h>
17#include <stdlib.h>
18#include <unistd.h>
19#include <sys/wait.h>
20#include "functionalext.h"
21
22/**
23 * @tc.name      : fork_0100
24 * @tc.desc      : The function call is successful and the process can be created
25 * @tc.level     : Level 0
26 */
27void fork_0100()
28{
29    pid_t fpid;
30    int count = 0;
31    int options = 0;
32    const char *sign_r = "1";
33    const char *sign_f = "0";
34    char list1[2];
35    char list2[2];
36
37    fpid = fork();
38    if (fpid < 0) {
39        t_error("%s error in fork!", __func__);
40    } else if (fpid == 0) {
41        FILE* fp = fopen("test1.txt", "w+");
42        if (!fp) {
43            t_error("failed to open test1.txt for writing");
44        }
45        fwrite(sign_r, sizeof(char), strlen(sign_r), fp);
46        fclose(fp);
47        _exit(EXIT_SUCCESS);
48    } else {
49        FILE* fp = fopen("test2.txt", "w+");
50        if (!fp) {
51            t_error("failed to open test2.txt for writing");
52        }
53        fwrite(sign_r, sizeof(char), strlen(sign_r), fp);
54        fclose(fp);
55        waitpid(fpid, NULL, options);
56
57        FILE *fp1 = fopen("test1.txt", "r");
58        if (!fp1) {
59            t_error("failed to open test1.txt for reading");
60        }
61        FILE *fp2 = fopen("test2.txt", "r");
62        if (!fp2) {
63            t_error("failed to open test2.txt for reading");
64        }
65        fread(list1, sizeof(list1), 1, fp1);
66        fread(list2, sizeof(list2), 1, fp2);
67        EXPECT_EQ("fork_0100", list1[0], '1');
68        EXPECT_EQ("fork_0100", list2[0], '1');
69
70        fclose(fp1);
71        fclose(fp2);
72        remove("test1.txt");
73        remove("test2.txt");
74    }
75}
76
77int main(int argc, char *argv[])
78{
79    fork_0100();
80    return t_status;
81}
82