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 * msgctl04.c
23 *
24 * DESCRIPTION
25 * msgctl04 - test for EACCES, EFAULT and EINVAL errors using
26 * a variety of incorrect calls.
27 *
28 * ALGORITHM
29 * create two message queues
30 * loop if that option was specified
31 * try to access a queue with some invalid argument
32 * check the errno value
33 * issue a PASS message if we get EACCES, EFAULT or EINVAL
34 * depending on the test case
35 * otherwise, the tests fails
36 * issue a FAIL message
37 * call cleanup
38 *
39 * USAGE: <for command-line>
40 * msgctl04 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
41 * where, -c n : Run n copies concurrently.
42 * -e : Turn on errno logging.
43 * -i n : Execute test n times.
44 * -I x : Execute test for x seconds.
45 * -P x : Pause for x seconds between iterations.
46 * -t : Turn on syscall timing.
47 *
48 * HISTORY
49 * 03/2001 - Written by Wayne Boyer
50 * 12/03/2008 Matthieu Fertré (Matthieu.Fertre@irisa.fr)
51 * - Fix concurrency issue. The second key used for this test could
52 * conflict with the key from another task.
53 *
54 * RESTRICTIONS
55 * none
56 */
57 #include <pwd.h>
58
59 #include "test.h"
60
61 #include "ipcmsg.h"
62
63 char *TCID = "msgctl04";
64 int TST_TOTAL = 6;
65
66 char nobody_uid[] = "nobody";
67 struct passwd *ltpuser;
68
69 int msg_q_1 = -1; /* The message queue id created in setup */
70 int msg_q_2 = -1; /* Another queue id created in setup */
71 int bad_q = -1; /* a value to use as a bad queue id */
72
73 struct msqid_ds q_buf;
74
75 struct test_case_t { /* This allows testing of many negative */
76 int *queue_id; /* test cases that can all use the same */
77 int ipc_cmd; /* basic test setup. */
78 struct msqid_ds *buf;
79 int error;
80 } TC[] = {
81 /* EACCES - there is no read permission for the queue */
82 {
83 &msg_q_1, IPC_STAT, &q_buf, EACCES},
84 /* EFAULT - the structure address is invalid - IPC_STAT */
85 {
86 &msg_q_2, IPC_STAT, (struct msqid_ds *)-1, EFAULT},
87 /* EFAULT - the structure address is invalid - IPC_SET */
88 {
89 &msg_q_2, IPC_SET, (struct msqid_ds *)-1, EFAULT},
90 /* EINVAL - the command (-1) is invalid */
91 {
92 &msg_q_2, -1, &q_buf, EINVAL},
93 /* EINVAL - the queue id is invalid - IPC_STAT */
94 {
95 &bad_q, IPC_STAT, &q_buf, EINVAL},
96 /* EINVAL - the queue id is invalid - IPC_SET */
97 {
98 &bad_q, IPC_SET, &q_buf, EINVAL}
99 };
100
main(int ac,char ** av)101 int main(int ac, char **av)
102 {
103 int lc;
104 int i;
105
106 tst_parse_opts(ac, av, NULL, NULL);
107
108 setup(); /* global setup */
109
110 /* The following loop checks looping state if -i option given */
111
112 for (lc = 0; TEST_LOOPING(lc); lc++) {
113 /* reset tst_count in case we are looping */
114 tst_count = 0;
115
116 /* loop through the test cases */
117
118 for (i = 0; i < TST_TOTAL; i++) {
119
120 TEST(msgctl(*(TC[i].queue_id), TC[i].ipc_cmd,
121 TC[i].buf));
122
123 if (TEST_RETURN != -1) {
124 tst_resm(TFAIL, "msgctl() call succeeded "
125 "on expected fail");
126 continue;
127 }
128
129 if (TEST_ERRNO == TC[i].error) {
130 tst_resm(TPASS | TTERRNO, "expected failure");
131 } else {
132 tst_resm(TFAIL | TTERRNO, "unexpected error");
133 tst_resm(TINFO, "expected error is - %d : %s",
134 TC[i].error, strerror(TC[i].error));
135 }
136 }
137 }
138
139 cleanup();
140
141 tst_exit();
142 }
143
144 /*
145 * setup() - performs all the ONE TIME setup for this test.
146 */
setup(void)147 void setup(void)
148 {
149 key_t msgkey2;
150
151 tst_require_root();
152
153 tst_sig(NOFORK, DEF_HANDLER, cleanup);
154
155 TEST_PAUSE;
156
157 /* Switch to nobody user for correct error code collection */
158 ltpuser = getpwnam(nobody_uid);
159 if (setuid(ltpuser->pw_uid) == -1)
160 tst_resm(TINFO, "setuid(%d) failed", ltpuser->pw_uid);
161
162 /*
163 * Create a temporary directory and cd into it.
164 * This helps to ensure that a unique msgkey is created.
165 * See ../lib/libipc.c for more information.
166 */
167 tst_tmpdir();
168
169 msgkey = getipckey();
170
171 /* Get an new IPC resource key. */
172 msgkey2 = getipckey();
173
174 /* now we have a key, so let's create a message queue */
175 if ((msg_q_1 = msgget(msgkey, IPC_CREAT | IPC_EXCL)) == -1) {
176 tst_brkm(TBROK | TERRNO, cleanup,
177 "Can't create message queue #1");
178 }
179
180 /* now let's create another message queue with read & write access */
181 if ((msg_q_2 =
182 msgget(msgkey2, IPC_CREAT | IPC_EXCL | MSG_RD | MSG_WR)) == -1) {
183 tst_brkm(TBROK | TERRNO, cleanup,
184 "Can't create message queue #2");
185 }
186 }
187
188 /*
189 * cleanup() - performs all the ONE TIME cleanup for this test at completion
190 * or premature exit.
191 */
cleanup(void)192 void cleanup(void)
193 {
194 /*
195 * remove the message queues that were created.
196 */
197 rm_queue(msg_q_1);
198
199 rm_queue(msg_q_2);
200
201 tst_rmdir();
202
203 }
204