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 */
fork_0100null27 void 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
main(int argc, char *argv[])77 int main(int argc, char *argv[])
78 {
79 fork_0100();
80 return t_status;
81 }
82