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 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 141 142 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 */ 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 */ 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