1 /* 2 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of version 2 of the GNU General Public License as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * 12 * You should have received a copy of the GNU General Public License along 13 * with this program; if not, write the Free Software Foundation, Inc., 14 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 15 * 16 */ 17 /********************************************************** 18 * 19 * TEST IDENTIFIER : prctl01 20 * 21 * EXECUTED BY : anyone 22 * 23 * TEST TITLE : Basic test for prctl(2) 24 * 25 * TEST CASE TOTAL : 2 26 * 27 * AUTHOR : Saji Kumar.V.R <saji.kumar@wipro.com> 28 * 29 * SIGNALS 30 * Uses SIGUSR1 to pause before test if option set. 31 * (See the parse_opts(3) man page). 32 * 33 * DESCRIPTION 34 * This is a Phase I test for the prctl(2) system call. 35 * It is intended to provide a limited exposure of the system call. 36 * 37 * Setup: 38 * Setup signal handling. 39 * Pause for SIGUSR1 if option specified. 40 * 41 * Test: 42 * Loop if the proper options are given. 43 * fork a child 44 * 45 * CHILD: 46 * call prctl() with proper arguments 47 * If call succeeds, 48 * exit with 0 49 * else 50 * exit with 1 51 * PARENT: 52 * wait() for child. 53 * If child exits with exit value 0, 54 * Test passed 55 * else 56 * Test Failed 57 * 58 * Cleanup: 59 * Print errno log and/or timing stats if options given 60 * 61 * USAGE: <for command-line> 62 * prctl01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p] 63 * where, -c n : Run n copies concurrently. 64 * -e : Turn on errno logging. 65 * -h : Show help screen 66 * -f : Turn off functional testing 67 * -i n : Execute test n times. 68 * -I x : Execute test for x seconds. 69 * -p : Pause for SIGUSR1 before starting 70 * -P x : Pause for x seconds between iterations. 71 * -t : Turn on syscall timing. 72 * 73 ****************************************************************/ 74 75 #include <errno.h> 76 #include <signal.h> 77 #include <sys/prctl.h> 78 #include <sys/wait.h> 79 80 #include "test.h" 81 82 static void setup(void); 83 static void cleanup(void); 84 85 char *TCID = "prctl01"; 86 87 int option[2] = { PR_GET_PDEATHSIG, PR_SET_PDEATHSIG }; 88 89 int TST_TOTAL = 2; 90 91 int main(int ac, char **av) 92 { 93 94 int lc, i; 95 pid_t child_pid; 96 int status, sig; 97 98 tst_parse_opts(ac, av, NULL, NULL); 99 100 setup(); 101 102 for (lc = 0; TEST_LOOPING(lc); lc++) { 103 104 tst_count = 0; 105 106 for (i = 0; i < TST_TOTAL; ++i) { 107 108 switch (child_pid = FORK_OR_VFORK()) { 109 110 case -1: 111 /* fork() failed */ 112 tst_resm(TFAIL, "fork() failed"); 113 continue; 114 115 case 0: 116 /* Child */ 117 if (i == 1) { 118 sig = SIGUSR2; 119 TEST(prctl(option[i], sig)); 120 } else { 121 TEST(prctl(option[i], &sig)); 122 } 123 124 if (TEST_RETURN == 0) { 125 exit(0); 126 } else { 127 tst_resm(TWARN | TTERRNO, 128 "prctl() returned %ld", 129 TEST_RETURN); 130 exit(1); 131 } 132 133 default: 134 /* Parent */ 135 if ((waitpid(child_pid, &status, 0)) < 0) { 136 tst_resm(TFAIL, "waitpid() failed"); 137 continue; 138 } 139 140 if ((WIFEXITED(status)) && 141 (WEXITSTATUS(status) == 0)) { 142 tst_resm(TPASS, "Test Passed"); 143 } else { 144 tst_resm(TFAIL, "Test Failed"); 145 } 146 147 } 148 } 149 } 150 151 /* cleanup and exit */ 152 cleanup(); 153 tst_exit(); 154 155 } 156 157 /* setup() - performs all ONE TIME setup for this test */ 158 void setup(void) 159 { 160 161 tst_sig(FORK, DEF_HANDLER, cleanup); 162 163 TEST_PAUSE; 164 165 } 166 167 /* 168 *cleanup() - performs all ONE TIME cleanup for this test at 169 * completion or premature exit. 170 */ 171 void cleanup(void) 172 { 173 174 } 175