1 /*
2 * Copyright (c) Wipro Technologies Ltd, 2003. All Rights Reserved.
3 * Copyright (c) 2011 Cyril Hrubis <chrubis@suse.cz>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 *
17 */
18
19 #include <errno.h>
20 #include <time.h>
21 #include <pwd.h>
22 #include <unistd.h>
23
24 #include "test.h"
25 #include "common_timers.h"
26
27 static void setup(void);
28 static void cleanup(void);
29 static int setup_test(int option);
30
31 clockid_t clocks[] = {
32 CLOCK_REALTIME,
33 CLOCK_MONOTONIC,
34 MAX_CLOCKS,
35 MAX_CLOCKS + 1,
36 CLOCK_REALTIME,
37 CLOCK_REALTIME,
38 CLOCK_REALTIME,
39 CLOCK_PROCESS_CPUTIME_ID,
40 CLOCK_THREAD_CPUTIME_ID
41 };
42
43 int testcases[] = {
44 EFAULT, /* tp bad */
45 EINVAL, /* CLOCK_MONOTONIC */
46 EINVAL, /* MAX_CLOCKS */
47 EINVAL, /* MAX_CLOCKS + 1 */
48 EINVAL, /* Invalid timespec */
49 EINVAL, /* NSEC_PER_SEC + 1 */
50 EPERM, /* non-root user */
51 EINVAL, /* PROCESS_CPUTIME_ID */
52 EINVAL, /* THREAD_CPUTIME_ID */
53 };
54
55 char *TCID = "clock_settime03";
56 int TST_TOTAL = ARRAY_SIZE(testcases);
57
58 char nobody_uid[] = "nobody";
59 struct passwd *ltpuser;
60 static struct timespec spec, *temp, saved;
61
main(int ac,char ** av)62 int main(int ac, char **av)
63 {
64 int lc, i;
65
66 tst_parse_opts(ac, av, NULL, NULL);
67
68 setup();
69
70 for (lc = 0; TEST_LOOPING(lc); lc++) {
71
72 tst_count = 0;
73
74 for (i = 0; i < TST_TOTAL; i++) {
75
76 if (setup_test(i) < 0)
77 continue;
78
79 TEST(ltp_syscall(__NR_clock_settime, clocks[i], temp));
80
81 /* Change the UID back to root */
82 if (i == TST_TOTAL - 1) {
83 if (seteuid(0) == -1) {
84 tst_brkm(TBROK | TERRNO, cleanup,
85 "Failed to set the effective "
86 "uid to root");
87 }
88 }
89
90 /* check return code */
91 if (TEST_RETURN == -1 && TEST_ERRNO == testcases[i]) {
92 tst_resm(TPASS | TTERRNO,
93 "clock_settime(2) got expected "
94 "failure.");
95 } else {
96 tst_resm(TFAIL | TTERRNO,
97 "clock_settime(2) failed to produce "
98 "expected error (return code = %ld)",
99 TEST_RETURN);
100 /* Restore the clock to its previous state. */
101 if (TEST_RETURN == 0) {
102 if (ltp_syscall(__NR_clock_settime,
103 CLOCK_REALTIME,
104 &saved) < 0) {
105 tst_resm(TWARN | TERRNO,
106 "FATAL: could not set "
107 "the clock!");
108 }
109 }
110 }
111
112 }
113
114 }
115
116 cleanup();
117 tst_exit();
118 }
119
setup_test(int option)120 static int setup_test(int option)
121 {
122 /* valid timespec */
123 spec = saved;
124 temp = &spec;
125
126 /* error sceanrios */
127 switch (option) {
128 case 0:
129 /* Make tp argument bad pointer */
130 temp = (struct timespec *)-1;
131 break;
132 case 4:
133 /* Make the parameter of timespec invalid */
134 spec.tv_nsec = -1;
135 break;
136 case 5:
137 /* Make the parameter of timespec invalid */
138 spec.tv_nsec = NSEC_PER_SEC + 1;
139 break;
140 case 6:
141 /* change the User to non-root */
142 spec.tv_nsec = 0;
143 if ((ltpuser = getpwnam(nobody_uid)) == NULL) {
144 tst_resm(TWARN, "user \"nobody\" not present; "
145 "skipping test");
146 return -1;
147 }
148 if (seteuid(ltpuser->pw_uid) == -1) {
149 tst_resm(TWARN | TERRNO,
150 "seteuid failed to set the effective "
151 "uid to %d (nobody)", ltpuser->pw_uid);
152 return -1;
153 }
154 break;
155 }
156 return 0;
157 }
158
setup(void)159 static void setup(void)
160 {
161 tst_sig(NOFORK, DEF_HANDLER, cleanup);
162
163 tst_require_root();
164
165 if (ltp_syscall(__NR_clock_gettime, CLOCK_REALTIME, &saved) < 0)
166 tst_brkm(TBROK, NULL, "Clock gettime failed");
167
168 spec.tv_sec = 1;
169 spec.tv_nsec = 0;
170
171 TEST_PAUSE;
172 }
173
cleanup(void)174 static void cleanup(void)
175 {
176 }
177