1 /* 2 * Copyright (c) 2004, Bull S.A.. All rights reserved. 3 * Created by: Sebastien Decugis 4 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of version 2 of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 12 * 13 * You should have received a copy of the GNU General Public License along 14 * with this program; if not, write the Free Software Foundation, Inc., 15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 16 17 * This sample test aims to check the following assertion: 18 * 19 * The parent process ID of the child is the process ID of the parent (caller of fork()) 20 21 * The steps are: 22 * -> create a child 23 * -> check its parent process ID is the PID of its parent. 24 25 * The test fails if the IDs differ. 26 27 */ 28 29 /* We are testing conformance to IEEE Std 1003.1, 2003 Edition */ 30 #define _POSIX_C_SOURCE 200112L 31 32 #include <pthread.h> 33 #include <stdarg.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <unistd.h> 38 39 #include <sys/wait.h> 40 #include <errno.h> 41 42 #include "../testfrmw/testfrmw.h" 43 #include "../testfrmw/testfrmw.c" 44 45 #ifndef VERBOSE 46 #define VERBOSE 1 47 #endif 48 49 int main(void) 50 { 51 int status; 52 pid_t child, ctl; 53 54 output_init(); 55 56 ctl = getpid(); 57 58 /* Create the child */ 59 child = fork(); 60 if (child == -1) { 61 UNRESOLVED(errno, "Failed to fork"); 62 } 63 64 /* child */ 65 if (child == 0) { 66 /* Check the parent process ID */ 67 if (ctl != getppid()) { 68 FAILED 69 ("The parent process ID is not the PID of the parent"); 70 } 71 72 /* We're done */ 73 exit(PTS_PASS); 74 } 75 76 /* Parent joins the child */ 77 ctl = waitpid(child, &status, 0); 78 if (ctl != child) { 79 UNRESOLVED(errno, "Waitpid returned the wrong PID"); 80 } 81 if ((!WIFEXITED(status)) || (WEXITSTATUS(status) != PTS_PASS)) { 82 UNRESOLVED(status, "Child exited abnormally"); 83 } 84 85 #if VERBOSE > 0 86 output("Test passed\n"); 87 #endif 88 89 PASSED; 90 } 91
