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
63char *TCID = "msgctl04";
64int TST_TOTAL = 6;
65
66char nobody_uid[] = "nobody";
67struct passwd *ltpuser;
68
69int msg_q_1 = -1;		/* The message queue id created in setup */
70int msg_q_2 = -1;		/* Another queue id created in setup */
71int bad_q = -1;			/* a value to use as a bad queue id */
72
73struct msqid_ds q_buf;
74
75struct 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
101int 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 */
147void 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 */
192void 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