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 <sys/wait.h> 17 #include <unistd.h> 18 #include "functionalext.h" 19 20 /** 21 * @tc.name : getppid_0100 22 * @tc.desc : Get the parent process id of the calling process 23 * @tc.level : Level 0 24 */ getppid_0100(void)25void getppid_0100(void) 26 { 27 pid_t ppid = getpid(); 28 pid_t pid = fork(); 29 if (pid == 0) { 30 pid_t child_ppid = getppid(); 31 EXPECT_EQ("getppid_0100", child_ppid, ppid); 32 _exit(0); 33 } else if (pid > 0) { 34 wait(NULL); 35 } else { 36 EXPECT_FALSE("getppid_0100", 1); 37 } 38 } 39 main(void)40int main(void) 41 { 42 getppid_0100(); 43 return t_status; 44 }