1 /* 2 * Copyright (c) International Business Machines Corp., 2001 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 12 * the GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. 16 * 17 * History 18 * 07/2001 John George 19 * -Ported 20 * 04/2002 wjhuie sigset testx for SIG_ERR not < 0, TPASS|TFAIL issued 21 * 04/2002 wjhuie sigset cleanups 22 */ 23 24 /* 25 * DESCRIPTION 26 * Tests to see if pids returned from fork and waitpid are same 27 * 28 * ALGORITHM 29 * Check proper functioning of waitpid with pid = 0 and < -1 with arg 30 * WNOHANG 31 */ 32 33 #include "waitpid_common.h" 34 35 static void do_child_1(void) 36 { 37 pid_t pid, group; 38 int i; 39 int status; 40 41 group = SAFE_GETPGID(0); 42 43 for (i = 0; i < MAXKIDS; i++) { 44 if (i == (MAXKIDS / 2)) 45 SAFE_SETPGID(0, 0); 46 47 pid = SAFE_FORK(); 48 if (pid == 0) 49 do_exit(0); 50 51 fork_kid_pid[i] = pid; 52 } 53 54 if (TST_TRACE(waitpid_ret_test(0, &status, WNOHANG, 0, 0))) 55 return; 56 57 if (TST_TRACE(waitpid_ret_test(-group, &status, WNOHANG, 0, 0))) 58 return; 59 60 TST_CHECKPOINT_WAKE2(0, MAXKIDS); 61 62 if (TST_TRACE(reap_children(0, WNOHANG, fork_kid_pid + (MAXKIDS / 2), 63 MAXKIDS / 2))) 64 return; 65 66 if (TST_TRACE(reap_children(-group, WNOHANG, fork_kid_pid, 67 MAXKIDS / 2))) 68 return; 69 70 tst_res(TPASS, "Test PASSED"); 71 } 72 73 static struct tst_test test = { 74 .forks_child = 1, 75 .needs_checkpoints = 1, 76 .setup = waitpid_setup, 77 .cleanup = waitpid_cleanup, 78 .test_all = waitpid_test, 79 }; 80
