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 "safe_macros.h"
26 #include "common_timers.h"
27
28 static void setup(void);
29 static void cleanup(void);
30 static int setup_test(int option);
31
32 clockid_t clocks[] = {
33 CLOCK_REALTIME,
34 CLOCK_MONOTONIC,
35 MAX_CLOCKS,
36 MAX_CLOCKS + 1,
37 CLOCK_REALTIME,
38 CLOCK_REALTIME,
39 CLOCK_REALTIME,
40 CLOCK_PROCESS_CPUTIME_ID,
41 CLOCK_THREAD_CPUTIME_ID
42 };
43
44 int testcases[] = {
45 EFAULT, /* tp bad */
46 EINVAL, /* CLOCK_MONOTONIC */
47 EINVAL, /* MAX_CLOCKS */
48 EINVAL, /* MAX_CLOCKS + 1 */
49 EINVAL, /* Invalid timespec */
50 EINVAL, /* NSEC_PER_SEC + 1 */
51 EPERM, /* non-root user */
52 EINVAL, /* PROCESS_CPUTIME_ID */
53 EINVAL, /* THREAD_CPUTIME_ID */
54 };
55
56 char *TCID = "clock_settime03";
57 int TST_TOTAL = ARRAY_SIZE(testcases);
58
59 char nobody_uid[] = "nobody";
60 struct passwd *ltpuser;
61 static struct timespec spec, *temp, saved;
62
main(int ac,char ** av)63 int main(int ac, char **av)
64 {
65 int lc, i;
66
67 tst_parse_opts(ac, av, NULL, NULL);
68
69 setup();
70
71 for (lc = 0; TEST_LOOPING(lc); lc++) {
72
73 tst_count = 0;
74
75 for (i = 0; i < TST_TOTAL; i++) {
76
77 if (setup_test(i) < 0)
78 continue;
79
80 TEST(ltp_syscall(__NR_clock_settime, clocks[i], temp));
81
82 /* Change the UID back to root */
83 if (i == TST_TOTAL - 1) {
84 SAFE_SETEUID(cleanup, 0);
85 }
86
87 /* check return code */
88 if (TEST_RETURN == -1 && TEST_ERRNO == testcases[i]) {
89 tst_resm(TPASS | TTERRNO,
90 "clock_settime(2) got expected "
91 "failure.");
92 } else {
93 tst_resm(TFAIL | TTERRNO,
94 "clock_settime(2) failed to produce "
95 "expected error (return code = %ld)",
96 TEST_RETURN);
97 /* Restore the clock to its previous state. */
98 if (TEST_RETURN == 0) {
99 if (ltp_syscall(__NR_clock_settime,
100 CLOCK_REALTIME,
101 &saved) < 0) {
102 tst_resm(TWARN | TERRNO,
103 "FATAL: could not set "
104 "the clock!");
105 }
106 }
107 }
108
109 }
110
111 }
112
113 cleanup();
114 tst_exit();
115 }
116
setup_test(int option)117 static int setup_test(int option)
118 {
119 /* valid timespec */
120 spec = saved;
121 temp = &spec;
122
123 /* error sceanrios */
124 switch (option) {
125 case 0:
126 /* Make tp argument bad pointer */
127 temp = (struct timespec *)-1;
128 break;
129 case 4:
130 /* Make the parameter of timespec invalid */
131 spec.tv_nsec = -1;
132 break;
133 case 5:
134 /* Make the parameter of timespec invalid */
135 spec.tv_nsec = NSEC_PER_SEC + 1;
136 break;
137 case 6:
138 /* change the User to non-root */
139 spec.tv_nsec = 0;
140 if ((ltpuser = getpwnam(nobody_uid)) == NULL) {
141 tst_resm(TWARN, "user \"nobody\" not present; "
142 "skipping test");
143 return -1;
144 }
145 if (seteuid(ltpuser->pw_uid) == -1) {
146 tst_resm(TWARN | TERRNO,
147 "seteuid failed to set the effective "
148 "uid to %d (nobody)", ltpuser->pw_uid);
149 return -1;
150 }
151 break;
152 }
153 return 0;
154 }
155
setup(void)156 static void setup(void)
157 {
158 tst_sig(NOFORK, DEF_HANDLER, cleanup);
159
160 tst_require_root();
161
162 if (ltp_syscall(__NR_clock_gettime, CLOCK_REALTIME, &saved) < 0)
163 tst_brkm(TBROK, NULL, "Clock gettime failed");
164
165 spec.tv_sec = 1;
166 spec.tv_nsec = 0;
167
168 TEST_PAUSE;
169 }
170
cleanup(void)171 static void cleanup(void)
172 {
173 }
174