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: stime01
22 *
23 * Test Description:
24 * Verify that the system call stime() successfully sets the system's idea
25 * of date and time if invoked by "root" user.
26 *
27 * Expected Result:
28 * stime() should succeed to set the system data/time to the specified time.
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 * Log the errno and Issue a FAIL message.
40 * Otherwise,
41 * Verify the Functionality of system call
42 * if successful,
43 * Issue Functionality-Pass message.
44 * Otherwise,
45 * Issue Functionality-Fail message.
46 * Cleanup:
47 * Print errno log and/or timing stats if options given
48 *
49 * Usage: <for command-line>
50 * stime01 [-c n] [-e] [-f] [-i n] [-I x] [-p x] [-t]
51 * where, -c n : Run n copies concurrently.
52 * -e : Turn on errno logging.
53 * -f : Turn off functionality Testing.
54 * -i n : Execute test n times.
55 * -I x : Execute test for x seconds.
56 * -P x : Pause for x seconds between iterations.
57 * -t : Turn on syscall timing.
58 *
59 * History
60 * 07/2001 John George
61 * -Ported
62 *
63 * Restrictions:
64 * This test should be run by 'super-user' (root) only.
65 *
66 */
67
68 #include <stdio.h>
69 #include <unistd.h>
70 #include <sys/types.h>
71 #include <errno.h>
72 #include <fcntl.h>
73 #include <time.h>
74 #include <string.h>
75 #include <sys/stat.h>
76 #include <signal.h>
77 #include <sys/time.h>
78
79 #include "test.h"
80
81 #define INCR_TIME 30 /* increment in the system's current time */
82
83 #define BASH_CLOCK
84
85 char *TCID = "stime01";
86 int TST_TOTAL = 1;
87 struct timeval real_time_tv, pres_time_tv;
88 time_t new_time;
89
90 void setup(); /* Main setup function of test */
91 void cleanup(); /* cleanup function for the test */
92
main(int ac,char ** av)93 int main(int ac, char **av)
94 {
95 int lc;
96
97 tst_parse_opts(ac, av, NULL, NULL);
98
99 setup();
100
101 for (lc = 0; TEST_LOOPING(lc); lc++) {
102
103 /*
104 * ``Break`` the clock.
105 *
106 * This is being done inline here so that the offset is
107 * automatically reset based on the elapsed time, and not a
108 * fixed time sampled once in setup.
109 *
110 * The big assumption here is the clock state isn't super
111 * fubared if so, the executing party needs to go fix their
112 * RTC's battery, or they have more pressing issues to attend
113 * to as far as clock skew is concerned :P.
114 */
115 if (gettimeofday(&real_time_tv, NULL) < 0) {
116 tst_brkm(TBROK | TERRNO, NULL,
117 "failed to get current time via gettimeofday(2)");
118 }
119
120 /* Get the system's new time */
121 new_time = real_time_tv.tv_sec + INCR_TIME;
122
123 tst_count = 0;
124
125 /*
126 * Invoke stime(2) to set the system's time to the specified
127 * new_time.
128 */
129 if (stime(&new_time) < 0) {
130 tst_resm(TFAIL | TERRNO, "stime(%ld) failed", new_time);
131 } else {
132
133 /*
134 * Get the system's current time after call
135 * to stime().
136 */
137 if (gettimeofday(&pres_time_tv, NULL) < 0) {
138 tst_brkm(TFAIL | TERRNO, cleanup,
139 "time() failed to get "
140 "system's time after stime");
141 }
142
143 /* Now do the actual verification */
144 switch (pres_time_tv.tv_sec - new_time) {
145 case 0:
146 case 1:
147 tst_resm(TINFO, "pt.tv_sec: %ld",
148 pres_time_tv.tv_sec);
149 tst_resm(TPASS, "system time was set "
150 "to %ld", new_time);
151 break;
152 default:
153 tst_resm(TFAIL, "system time was not "
154 "set to %ld (time is "
155 "actually: %ld)",
156 new_time, pres_time_tv.tv_sec);
157 }
158
159 if (settimeofday(&real_time_tv, NULL) < 0) {
160 tst_resm(TBROK | TERRNO,
161 "failed to restore time to original "
162 "value; system clock may need to be "
163 "fixed manually");
164 }
165
166 }
167
168 }
169
170 cleanup();
171 tst_exit();
172
173 }
174
175 /*
176 * void
177 * setup() - performs all ONE TIME setup for this test.
178 * Get the current time and system's new time to be set in the test.
179 */
setup(void)180 void setup(void)
181 {
182 tst_require_root();
183
184 TEST_PAUSE;
185
186 }
187
188 /*
189 * void
190 * cleanup() - performs all ONE TIME cleanup for this test at
191 * completion or premature exit.
192 */
cleanup(void)193 void cleanup(void)
194 {
195
196 /* Restore the original system time. */
197 if (settimeofday(&real_time_tv, NULL) != 0) {
198 tst_resm(TBROK | TERRNO, "failed to restore time to original "
199 "value; system clock may need to be "
200 "fixed manually");
201 }
202
203 }
204