1 /* 2 * 3 * Copyright (c) International Business Machines Corp., 2001 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 /* 21 * NAME 22 * fork02.c 23 * 24 * DESCRIPTION 25 * Test correct operation of fork: 26 * pid == 0 in child; 27 * pid > 0 in parent from wait; 28 * 29 * ALGORITHM 30 * Fork one process, check for pid == 0 in child. 31 * Check for pid > 0 in parent after wait. 32 * 33 * USAGE 34 * fork02 35 * 36 * HISTORY 37 * 07/2001 Ported by Wayne Boyer 38 * 39 * RESTRICTIONS 40 * None 41 */ 42 43 #include <sys/types.h> 44 #include <sys/wait.h> 45 #include <stdio.h> 46 #include <unistd.h> 47 #include "test.h" 48 49 static void setup(void); 50 static void cleanup(void); 51 52 char *TCID = "fork02"; 53 int TST_TOTAL = 1; 54 55 int main(int ac, char **av) 56 { 57 int pid1, pid2, status; 58 59 int lc; 60 61 tst_parse_opts(ac, av, NULL, NULL); 62 63 setup(); 64 65 for (lc = 0; TEST_LOOPING(lc); lc++) { 66 tst_count = 0; 67 68 pid1 = fork(); 69 if (pid1 == -1) 70 tst_brkm(TBROK, cleanup, "fork() failed"); 71 72 if (pid1 == 0) { 73 tst_resm(TINFO, "Inside child"); 74 _exit(0); 75 } else { 76 tst_resm(TINFO, "Inside parent"); 77 pid2 = wait(&status); 78 tst_resm(TINFO, "exit status of wait %d", status); 79 80 if (pid1 == pid2) 81 tst_resm(TPASS, "test 1 PASSED"); 82 else 83 tst_resm(TFAIL, "test 1 FAILED"); 84 } 85 } 86 87 cleanup(); 88 tst_exit(); 89 } 90 91 static void setup(void) 92 { 93 tst_sig(FORK, DEF_HANDLER, cleanup); 94 TEST_PAUSE; 95 } 96 97 static void cleanup(void) 98 { 99 } 100
