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
68 char *TCID = "settimeofday01";
69 int TST_TOTAL = 1;
70 time_t save_tv_sec, save_tv_usec;
71 struct timeval tp, tp1, tp2;
72
73 void setup(void);
74 void cleanup(void);
75
76 #if !defined(UCLINUX)
77
main(int argc,char ** argv)78 int main(int argc, char **argv)
79 {
80 int lc;
81 suseconds_t delta;
82
83 tst_parse_opts(argc, argv, NULL, NULL);
84
85 setup();
86
87 for (lc = 0; TEST_LOOPING(lc); lc++) {
88 int condition_number = 1;
89 /* reset tst_count in case we are looping */
90 tst_count = 0;
91
92 gettimeofday(&tp, NULL);
93 tp.tv_sec += VAL_SEC;
94 tp.tv_usec += VAL_MSEC;
95
96 TEST(settimeofday(&tp, NULL));
97 if (TEST_RETURN == -1) {
98 tst_resm(TFAIL, "Error Setting Time, errno=%d",
99 TEST_ERRNO);
100 }
101
102 if ((gettimeofday(&tp2, (struct timezone *)&tp1)) == -1) {
103 tst_resm(TBROK, "Error Getting Time, errno=%d", errno);
104 }
105
106 if (tp2.tv_sec > tp.tv_sec) {
107 delta =
108 (suseconds_t) (tp2.tv_sec - tp.tv_sec) * 1000 +
109 (tp2.tv_usec - tp.tv_usec) / 1000;
110 } else {
111 delta =
112 (suseconds_t) (tp.tv_sec - tp2.tv_sec) * 1000 +
113 (tp.tv_usec - tp2.tv_usec) / 1000;
114 }
115
116 if (delta > -ACCEPTABLE_DELTA && delta < ACCEPTABLE_DELTA) {
117 tst_resm(TPASS, "Test condition %d successful",
118 condition_number++);
119 } else {
120 tst_resm(TFAIL, "Test condition %d failed",
121 condition_number++);
122 }
123
124 /* Invalid Args : Error Condition where tp = NULL */
125 TEST(settimeofday((struct timeval *)-1, NULL));
126 if (TEST_RETURN == -1) {
127 tst_resm(TPASS, "Test condition %d successful",
128 condition_number++);
129 } else {
130 tst_resm(TFAIL, "Test condition %d failed",
131 condition_number);
132 }
133
134 }
135 cleanup();
136 tst_exit();
137
138 }
139
140 #else
141
main(void)142 int main(void)
143 {
144 tst_resm(TINFO, "test is not available on uClinux");
145 tst_exit();
146 }
147
148 #endif /* if !defined(UCLINUX) */
149
150 /*
151 * setup()
152 * performs all ONE TIME setup for this test
153 */
setup(void)154 void setup(void)
155 {
156 tst_require_root();
157
158 tst_sig(FORK, DEF_HANDLER, cleanup);
159
160 /* Pause if that option was specified
161 * TEST_PAUSE contains the code to fork the test with the -c option.
162 */
163 TEST_PAUSE;
164
165 /* Save the current time values */
166 if ((gettimeofday(&tp, (struct timezone *)&tp1)) == -1) {
167 tst_brkm(TBROK, cleanup, "gettimeofday failed. "
168 "errno=%d", errno);
169 }
170 save_tv_sec = tp.tv_sec;
171 save_tv_usec = tp.tv_usec;
172 }
173
174 /*
175 * cleanup()
176 * performs all ONE TIME cleanup for this test at
177 * completion or premature exit
178 */
cleanup(void)179 void cleanup(void)
180 {
181 /* restore the original time values. */
182 tp.tv_sec = save_tv_sec;
183 tp.tv_usec = save_tv_usec;
184 if ((settimeofday(&tp, NULL)) == -1) {
185 tst_resm(TWARN, "FATAL COULD NOT RESET THE CLOCK");
186 tst_resm(TFAIL, "Error Setting Time, errno=%d", errno);
187 }
188
189 }
190