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 * shmget01.c
23 *
24 * DESCRIPTION
25 * shmget01 - test that shmget() correctly creates a shared memory segment
26 *
27 * ALGORITHM
28 * loop if that option was specified
29 * use the TEST() macro to call shmget()
30 * check the return code
31 * if failure, issue a FAIL message.
32 * otherwise,
33 * if doing functionality testing
34 * stat the shared memory resource
35 * check the size, creator pid and mode
36 * if correct,
37 * issue a PASS message
38 * otherwise
39 * issue a FAIL message
40 * else issue a PASS message
41 * call cleanup
42 *
43 * USAGE: <for command-line>
44 * shmget01 [-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 "ipcshm.h"
60
61 char *TCID = "shmget01";
62 int TST_TOTAL = 1;
63
64 int shm_id_1 = -1;
65
main(int ac,char ** av)66 int main(int ac, char **av)
67 {
68 int lc;
69 struct shmid_ds buf;
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(shmget(shmkey, SHM_SIZE, (IPC_CREAT | IPC_EXCL | SHM_RW)));
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 shm_id_1 = TEST_RETURN;
92 /* do a STAT and check some info */
93 if (shmctl(shm_id_1, IPC_STAT, &buf) == -1) {
94 tst_resm(TBROK, "shmctl failed in "
95 "functional test");
96 continue;
97 }
98 /* check the seqment size */
99 if (buf.shm_segsz != SHM_SIZE) {
100 tst_resm(TFAIL, "seqment size is not "
101 "correct");
102 continue;
103 }
104 /* check the pid of the creator */
105 if (buf.shm_cpid != getpid()) {
106 tst_resm(TFAIL, "creator pid is not "
107 "correct");
108 continue;
109 }
110 /*
111 * check the mode of the seqment
112 * mask out all but the lower 9 bits
113 */
114 if ((buf.shm_perm.mode & MODE_MASK) !=
115 ((SHM_RW) & MODE_MASK)) {
116 tst_resm(TFAIL, "segment mode is not "
117 "correct");
118 continue;
119 }
120 /* if we get here, everything looks good */
121 tst_resm(TPASS, "size, pid & mode are correct");
122 }
123
124 /*
125 * clean up things in case we are looping
126 */
127 if (shmctl(shm_id_1, IPC_RMID, NULL) == -1) {
128 tst_resm(TBROK, "couldn't remove shared memory");
129 } else {
130 shm_id_1 = -1;
131 }
132 }
133
134 cleanup();
135
136 tst_exit();
137 }
138
139 /*
140 * setup() - performs all the ONE TIME setup for this test.
141 */
setup(void)142 void setup(void)
143 {
144
145 tst_sig(NOFORK, DEF_HANDLER, cleanup);
146
147 TEST_PAUSE;
148
149 /*
150 * Create a temporary directory and cd into it.
151 * This helps to ensure that a unique msgkey is created.
152 * See ../lib/libipc.c for more information.
153 */
154 tst_tmpdir();
155
156 /* get an IPC resource key */
157 shmkey = getipckey();
158 }
159
160 /*
161 * cleanup() - performs all the ONE TIME cleanup for this test at completion
162 * or premature exit.
163 */
cleanup(void)164 void cleanup(void)
165 {
166 /* if it exists, remove the shared memory resource */
167 rm_shm(shm_id_1);
168
169 tst_rmdir();
170
171 }
172