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 * settimeofday01.c
23 *
24 * DESCRIPTION
25 * Testcase to check the basic functionality of settimeofday().
26 *
27 * ALGORITHM
28 * Setup:
29 * Setup signal handling.
30 * Check that we are the proper user.
31 * Setup expected errnos.
32 * Pause for SIGUSER1 if option specified.
33 * Save the current time values.
34 * Loop if the proper options are given.
35 * Call settimeofday and verify the time was changed.
36 * Call settimeofday with invalid Args and verify that the call fails.
37 * Cleanup:
38 * Restore the original time values.
39 * Print errno log and/or timing stats if options given.
40 *
41 * USAGE: <for command-line>
42 * settimeofday01 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
43 * where, -c n : Run n copies concurrently.
44 * -e : Turn on errno logging.
45 * -i n : Execute test n times.
46 * -I x : Execute test for x seconds.
47 * -P x : Pause for x seconds between iterations.
48 * -t : Turn on syscall timing.
49 *
50 * History
51 * 07/2001 John George
52 * -Ported
53 *
54 * Restrictions
55 * Must be run as root.
56 */
57
58 #include <sys/time.h>
59 #include <errno.h>
60 #include <unistd.h>
61 #include "test.h"
62
63 #define FAILED 1
64 #define VAL_SEC 100
65 #define VAL_MSEC 100
66 #define ACCEPTABLE_DELTA 500 /* in milli-seconds */
67 #define USEC_PER_SEC 1000000L
68
69 char *TCID = "settimeofday01";
70 int TST_TOTAL = 1;
71 time_t save_tv_sec, save_tv_usec;
72 struct timeval tp, tp1, tp2;
73
74 void setup(void);
75 void cleanup(void);
76
77 #if !defined(UCLINUX)
78
main(int argc,char ** argv)79 int main(int argc, char **argv)
80 {
81 int lc;
82 suseconds_t delta;
83
84 tst_parse_opts(argc, argv, NULL, NULL);
85
86 setup();
87
88 for (lc = 0; TEST_LOOPING(lc); lc++) {
89 int condition_number = 1;
90 /* reset tst_count in case we are looping */
91 tst_count = 0;
92
93 gettimeofday(&tp, NULL);
94 tp.tv_sec += VAL_SEC;
95 tp.tv_usec += VAL_MSEC;
96 if (tp.tv_usec >= USEC_PER_SEC)
97 tp.tv_usec = VAL_MSEC;
98
99 TEST(settimeofday(&tp, NULL));
100 if (TEST_RETURN == -1) {
101 tst_resm(TFAIL, "Error Setting Time, errno=%d",
102 TEST_ERRNO);
103 }
104
105 if ((gettimeofday(&tp2, (struct timezone *)&tp1)) == -1) {
106 tst_resm(TBROK, "Error Getting Time, errno=%d", errno);
107 }
108
109 if (tp2.tv_sec > tp.tv_sec) {
110 delta =
111 (suseconds_t) (tp2.tv_sec - tp.tv_sec) * 1000 +
112 (tp2.tv_usec - tp.tv_usec) / 1000;
113 } else {
114 delta =
115 (suseconds_t) (tp.tv_sec - tp2.tv_sec) * 1000 +
116 (tp.tv_usec - tp2.tv_usec) / 1000;
117 }
118
119 if (delta > -ACCEPTABLE_DELTA && delta < ACCEPTABLE_DELTA) {
120 tst_resm(TPASS, "Test condition %d successful",
121 condition_number++);
122 } else {
123 tst_resm(TFAIL, "Test condition %d failed",
124 condition_number++);
125 }
126
127 /* Invalid Args : Error Condition where tp = NULL */
128 TEST(settimeofday((struct timeval *)-1, NULL));
129 if (TEST_RETURN == -1) {
130 tst_resm(TPASS, "Test condition %d successful",
131 condition_number++);
132 } else {
133 tst_resm(TFAIL, "Test condition %d failed",
134 condition_number);
135 }
136
137 }
138 cleanup();
139 tst_exit();
140
141 }
142
143 #else
144
main(void)145 int main(void)
146 {
147 tst_resm(TINFO, "test is not available on uClinux");
148 tst_exit();
149 }
150
151 #endif /* if !defined(UCLINUX) */
152
153 /*
154 * setup()
155 * performs all ONE TIME setup for this test
156 */
setup(void)157 void setup(void)
158 {
159 tst_require_root();
160
161 tst_sig(FORK, DEF_HANDLER, cleanup);
162
163 /* Pause if that option was specified
164 * TEST_PAUSE contains the code to fork the test with the -c option.
165 */
166 TEST_PAUSE;
167
168 /* Save the current time values */
169 if ((gettimeofday(&tp, (struct timezone *)&tp1)) == -1) {
170 tst_brkm(TBROK, cleanup, "gettimeofday failed. "
171 "errno=%d", errno);
172 }
173 save_tv_sec = tp.tv_sec;
174 save_tv_usec = tp.tv_usec;
175 }
176
177 /*
178 * cleanup()
179 * performs all ONE TIME cleanup for this test at
180 * completion or premature exit
181 */
cleanup(void)182 void cleanup(void)
183 {
184 /* restore the original time values. */
185 tp.tv_sec = save_tv_sec;
186 tp.tv_usec = save_tv_usec;
187 if ((settimeofday(&tp, NULL)) == -1) {
188 tst_resm(TWARN, "FATAL COULD NOT RESET THE CLOCK");
189 tst_resm(TFAIL, "Error Setting Time, errno=%d", errno);
190 }
191
192 }
193