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 * semop03.c 23 * 24 * DESCRIPTION 25 * semop03 - test for EFBIG error 26 * 27 * ALGORITHM 28 * create a semaphore set with read and alter permissions 29 * loop if that option was specified 30 * call semop() using two different invalid cases 31 * check the errno value 32 * issue a PASS message if we get EFBIG 33 * otherwise, the tests fails 34 * issue a FAIL message 35 * call cleanup 36 * 37 * USAGE: <for command-line> 38 * semop03 [-c n] [-e] [-i n] [-I x] [-P x] [-t] 39 * where, -c n : Run n copies concurrently. 40 * -e : Turn on errno logging. 41 * -i n : Execute test n times. 42 * -I x : Execute test for x seconds. 43 * -P x : Pause for x seconds between iterations. 44 * -t : Turn on syscall timing. 45 * 46 * HISTORY 47 * 03/2001 - Written by Wayne Boyer 48 * 49 * RESTRICTIONS 50 * none 51 */ 52 53 #include "ipcsem.h" 54 55 char *TCID = "semop03"; 56 int TST_TOTAL = 2; 57 58 int sem_id_1 = -1; 59 60 struct sembuf s_buf; 61 62 int TC[] = { -1, PSEMS + 1 }; /* negative and too many "primitive" semas */ 63 64 int main(int ac, char **av) 65 { 66 int lc; 67 int i; 68 69 tst_parse_opts(ac, av, NULL, NULL); 70 71 setup(); /* global setup */ 72 73 /* initialize two fields in the sembuf structure here */ 74 s_buf.sem_op = 1; /* add this value to struct sem.semval */ 75 s_buf.sem_flg = SEM_UNDO; /* undo when process exits */ 76 77 /* The following loop checks looping state if -i option given */ 78 79 for (lc = 0; TEST_LOOPING(lc); lc++) { 80 /* reset tst_count in case we are looping */ 81 tst_count = 0; 82 83 for (i = 0; i < TST_TOTAL; i++) { 84 85 /* initialize the last field in the sembuf */ 86 /* structure to the test dependent value */ 87 s_buf.sem_num = TC[i]; 88 89 /* 90 * use the TEST macro to make the call 91 */ 92 93 TEST(semop(sem_id_1, &s_buf, 1)); 94 95 if (TEST_RETURN != -1) { 96 tst_resm(TFAIL, "call succeeded unexpectedly"); 97 continue; 98 } 99 100 switch (TEST_ERRNO) { 101 case EFBIG: 102 tst_resm(TPASS, "expected failure - errno = " 103 "%d : %s", TEST_ERRNO, 104 strerror(TEST_ERRNO)); 105 break; 106 default: 107 tst_resm(TFAIL, "unexpected error - " 108 "%d : %s", TEST_ERRNO, 109 strerror(TEST_ERRNO)); 110 break; 111 } 112 } 113 } 114 115 cleanup(); 116 117 tst_exit(); 118 } 119 120 /* 121 * setup() - performs all the ONE TIME setup for this test. 122 */ 123 void setup(void) 124 { 125 126 tst_sig(NOFORK, DEF_HANDLER, cleanup); 127 128 TEST_PAUSE; 129 130 /* 131 * Create a temporary directory and cd into it. 132 * This helps to ensure that a unique msgkey is created. 133 * See ../lib/libipc.c for more information. 134 */ 135 tst_tmpdir(); 136 137 /* get an IPC resource key */ 138 semkey = getipckey(); 139 140 /* create a semaphore with read and alter permissions */ 141 if ((sem_id_1 = 142 semget(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA)) == -1) { 143 tst_brkm(TBROK, cleanup, "couldn't create semaphore in setup"); 144 } 145 } 146 147 /* 148 * cleanup() - performs all the ONE TIME cleanup for this test at completion 149 * or premature exit. 150 */ 151 void cleanup(void) 152 { 153 /* if it exists, remove the semaphore resource */ 154 rm_sema(sem_id_1); 155 156 tst_rmdir(); 157 158 } 159
