1 /* 2 * 3 * Copyright (c) International Business Machines Corp., 2001 4 * Copyright (c) 2012 Cyril Hrubis <chrubis (at) suse.cz> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 14 * the GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 /* 22 * wait402 - check for ECHILD errno when using an illegal pid value 23 */ 24 25 #include "test.h" 26 27 #include <errno.h> 28 #define _USE_BSD 29 #include <sys/types.h> 30 #include <sys/resource.h> 31 #include <sys/wait.h> 32 #include <stdlib.h> 33 #include <string.h> 34 35 char *TCID = "wait402"; 36 int TST_TOTAL = 1; 37 38 static void cleanup(void); 39 static void setup(void); 40 41 static long get_pid_max(void) 42 { 43 long pid_max; 44 45 SAFE_FILE_SCANF(NULL, "/proc/sys/kernel/pid_max", "%ld", &pid_max); 46 47 return pid_max; 48 } 49 50 int main(int ac, char **av) 51 { 52 int lc; 53 pid_t epid = get_pid_max() + 1; 54 55 int status = 1; 56 struct rusage rusage; 57 58 tst_parse_opts(ac, av, NULL, NULL); 59 60 setup(); 61 62 for (lc = 0; TEST_LOOPING(lc); lc++) { 63 tst_count = 0; 64 65 TEST(wait4(epid, &status, 0, &rusage)); 66 67 if (TEST_RETURN == 0) { 68 tst_brkm(TFAIL, cleanup, 69 "call failed to produce expected error - errno = %d - %s", 70 TEST_ERRNO, strerror(TEST_ERRNO)); 71 } 72 73 switch (TEST_ERRNO) { 74 case ECHILD: 75 tst_resm(TPASS, 76 "received expected failure - errno = %d - %s", 77 TEST_ERRNO, strerror(TEST_ERRNO)); 78 break; 79 default: 80 tst_brkm(TFAIL, cleanup, 81 "call failed to produce expected " 82 "error - errno = %d - %s", TEST_ERRNO, 83 strerror(TEST_ERRNO)); 84 } 85 } 86 87 cleanup(); 88 tst_exit(); 89 } 90 91 static void setup(void) 92 { 93 94 tst_sig(FORK, DEF_HANDLER, cleanup); 95 96 TEST_PAUSE; 97 } 98 99 static void cleanup(void) 100 { 101 } 102
