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
main(int ac,char ** av)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 */
setup(void)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 */
cleanup(void)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