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 * semget01.c
23 *
24 * DESCRIPTION
25 * semget01 - test that semget() correclty creates a semaphore set
26 *
27 * ALGORITHM
28 * loop if that option was specified
29 * call semget() to create the semaphore set
30 * check the return code
31 * if failure, issue a FAIL message.
32 * otherwise,
33 * if doing functionality testing
34 * stat the semaphore set
35 * if the number of primitive semaphores is correct and
36 * the semaphore uid == the process uid
37 * then,
38 * issue a PASS message
39 * otherwise
40 * issue a FAIL message
41 * call cleanup
42 *
43 * USAGE: <for command-line>
44 * semget01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
45 * where, -c n : Run n copies concurrently.
46 * -f : Turn off functionality Testing.
47 * -i n : Execute test n times.
48 * -I x : Execute test for x seconds.
49 * -P x : Pause for x seconds between iterations.
50 * -t : Turn on syscall timing.
51 *
52 * HISTORY
53 * 03/2001 - Written by Wayne Boyer
54 *
55 * RESTRICTIONS
56 * none
57 */
58
59 #include "../lib/ipcsem.h"
60
61 char *TCID = "semget01";
62 int TST_TOTAL = 1;
63
64 int sem_id_1 = -1;
65
main(int ac,char ** av)66 int main(int ac, char **av)
67 {
68 int lc;
69 void check_functionality(void);
70
71 tst_parse_opts(ac, av, NULL, NULL);
72
73 setup(); /* global setup */
74
75 /* The following loop checks looping state if -i option given */
76
77 for (lc = 0; TEST_LOOPING(lc); lc++) {
78 /* reset tst_count in case we are looping */
79 tst_count = 0;
80
81 /*
82 * Use TEST macro to make the call
83 */
84
85 TEST(semget(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA));
86
87 if (TEST_RETURN == -1) {
88 tst_resm(TFAIL, "%s call failed - errno = %d : %s",
89 TCID, TEST_ERRNO, strerror(TEST_ERRNO));
90 } else {
91 /* get the semaphore ID */
92 sem_id_1 = TEST_RETURN;
93
94 check_functionality();
95 }
96
97 /*
98 * remove the semaphore that was created and mark the ID
99 * as invalid.
100 */
101 if (sem_id_1 != -1) {
102 rm_sema(sem_id_1);
103 sem_id_1 = -1;
104 }
105 }
106
107 cleanup();
108
109 tst_exit();
110 }
111
112 /*
113 * check_functionality() - check the functionality of the tested system call.
114 */
check_functionality(void)115 void check_functionality(void)
116 {
117 struct semid_ds semary;
118 union semun un_arg; /* union defined in ipcsem.h */
119
120 /* STAT the semaphore */
121 un_arg.buf = &semary;
122 if (semctl(sem_id_1, 0, IPC_STAT, un_arg) == -1) {
123 tst_brkm(TBROK, cleanup, "Could not stat the semaphore");
124 return;
125 }
126
127 if (un_arg.buf->sem_nsems != PSEMS) {
128 tst_resm(TFAIL, "# of semaphores in set != # given to create");
129 return;
130 }
131
132 if (un_arg.buf->sem_perm.cuid != geteuid()) {
133 tst_resm(TFAIL, "semaphore uid != process uid");
134 return;
135 }
136
137 tst_resm(TPASS, "basic semaphore values are okay");
138 }
139
140 /*
141 * setup() - performs all the ONE TIME setup for this test.
142 */
setup(void)143 void setup(void)
144 {
145
146 tst_sig(NOFORK, DEF_HANDLER, cleanup);
147
148 TEST_PAUSE;
149
150 /*
151 * Create a temporary directory and cd into it.
152 * This helps to ensure that a unique msgkey is created.
153 * See ../lib/libipc.c for more information.
154 */
155 tst_tmpdir();
156
157 /* get an IPC resource key */
158 semkey = getipckey();
159 }
160
161 /*
162 * cleanup() - performs all the ONE TIME cleanup for this test at completion
163 * or premature exit.
164 */
cleanup(void)165 void cleanup(void)
166 {
167 /* if it exists, remove the semaphore resouce */
168 rm_sema(sem_id_1);
169
170 tst_rmdir();
171
172 }
173