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 * Test Name: stime02
22 *
23 * Test Description:
24 * Verify that the system call stime() fails to set the system's idea
25 * of data and time if invoked by "non-root" user.
26 *
27 * Expected Result:
28 * stime() should fail with return value -1 and set errno to EPERM.
29 *
30 * Algorithm:
31 * Setup:
32 * Setup signal handling.
33 * Pause for SIGUSR1 if option specified.
34 *
35 * Test:
36 * Loop if the proper options are given.
37 * Execute system call
38 * Check return code, if system call failed (return=-1)
39 * if errno set == expected errno
40 * Issue sys call fails with expected return value and errno.
41 * Otherwise,
42 * Issue sys call fails with unexpected errno.
43 * Otherwise,
44 * Issue sys call returns unexpected value.
45 *
46 * Cleanup:
47 * Print errno log and/or timing stats if options given
48 *
49 * Usage: <for command-line>
50 * stime02 [-c n] [-e] [-i n] [-I x] [-p x] [-t]
51 * where, -c n : Run n copies concurrently.
52 * -e : Turn on errno logging.
53 * -i n : Execute test n times.
54 * -I x : Execute test for x seconds.
55 * -P x : Pause for x seconds between iterations.
56 * -t : Turn on syscall timing.
57 *
58 * History
59 * 07/2001 John George
60 * -Ported
61 *
62 * Restrictions:
63 */
64
65 #include <stdio.h>
66 #include <unistd.h>
67 #include <sys/types.h>
68 #include <errno.h>
69 #include <fcntl.h>
70 #include <time.h>
71 #include <string.h>
72 #include <sys/stat.h>
73 #include <signal.h>
74 #include <pwd.h>
75
76 #include "test.h"
77
78 #define INCR_TIME 10 /* increment in the system's current time */
79
80 char *TCID = "stime02";
81 int TST_TOTAL = 1;
82
83 time_t curr_time; /* system's current time in seconds */
84 time_t new_time; /* system's new time */
85 time_t tloc; /* argument var. for time() */
86 char nobody_uid[] = "nobody";
87 struct passwd *ltpuser;
88
89 void setup(); /* Main setup function of test */
90 void cleanup(); /* cleanup function for the test */
91
main(int ac,char ** av)92 int main(int ac, char **av)
93 {
94 int lc;
95
96 tst_parse_opts(ac, av, NULL, NULL);
97
98 setup();
99
100 for (lc = 0; TEST_LOOPING(lc); lc++) {
101
102 tst_count = 0;
103
104 /*
105 * Invoke stime(2) to set the system's time
106 * to the specified new_time as non-root user.
107 */
108 TEST(stime(&new_time));
109
110 if (TEST_RETURN == -1) {
111 if (TEST_ERRNO == EPERM) {
112 tst_resm(TPASS, "stime(2) fails, Caller not "
113 "root, errno:%d", TEST_ERRNO);
114 } else {
115 tst_resm(TFAIL, "stime(2) fails, Caller not "
116 "root, errno:%d, expected errno:%d",
117 TEST_ERRNO, EPERM);
118 }
119 } else {
120 tst_resm(TFAIL, "stime(2) returned %ld, expected -1, "
121 "errno:%d", TEST_RETURN, EPERM);
122 }
123 tst_count++; /* incr TEST_LOOP counter */
124 }
125
126 cleanup();
127 tst_exit();
128
129 }
130
131 /*
132 * void
133 * setup() - performs all ONE TIME setup for this test.
134 * Get the current time and system's new time.
135 */
setup(void)136 void setup(void)
137 {
138 tst_require_root();
139
140 tst_sig(NOFORK, DEF_HANDLER, cleanup);
141
142 /* Switch to nobody user for correct error code collection */
143 ltpuser = getpwnam(nobody_uid);
144 if (setuid(ltpuser->pw_uid) == -1) {
145 tst_resm(TINFO, "setuid failed to "
146 "to set the effective uid to %d", ltpuser->pw_uid);
147 perror("setuid");
148 }
149
150 TEST_PAUSE;
151
152 /* Get the current time */
153 if ((curr_time = time(&tloc)) < 0) {
154 tst_brkm(TBROK, cleanup,
155 "time() failed to get current time, errno=%d", errno);
156 }
157
158 /* Get the system's new time */
159 new_time = curr_time + INCR_TIME;
160 }
161
162 /*
163 * void
164 * cleanup() - performs all ONE TIME cleanup for this test at
165 * completion or premature exit.
166 */
cleanup(void)167 void cleanup(void)
168 {
169
170 }
171