1 /* $NetBSD: time.c,v 1.5 2026/01/29 17:51:58 nia Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000 5 * Intel Corporation. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of Intel Corporation or its contributors may be 20 * used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS'' 24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE 27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 33 * THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 /* __FBSDID("$FreeBSD: src/sys/boot/ia64/libski/time.c,v 1.4 2003/09/08 09:11:32 obrien Exp $"); */ 38 39 //#include <time.h> 40 #include <sys/time.h> 41 #include <lib/libsa/stand.h> 42 #include <lib/libsa/loadfile.h> 43 44 #include "bootstrap.h" 45 #include "libski.h" 46 47 /* 48 // Accurate only for the past couple of centuries; 49 // that will probably do. 50 // 51 // (#defines From FreeBSD 3.2 lib/libc/stdtime/tzfile.h) 52 */ 53 54 #define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0)) 55 #define SECSPERHOUR ( 60*60 ) 56 #define SECSPERDAY (24 * SECSPERHOUR) 57 58 struct ssc_time { 59 int Year; 60 int Month; 61 int Day; 62 int Hour; 63 int Minute; 64 int Second; 65 int Msec; 66 int Wday; 67 }; 68 69 time_t 70 EfiTimeToUnixTime(struct ssc_time *ETime) 71 { 72 /* 73 // These arrays give the cumulative number of days up to the first of the 74 // month number used as the index (1 -> 12) for regular and leap years. 75 // The value at index 13 is for the whole year. 76 */ 77 static time_t CumulativeDays[2][14] = { 78 {0, 79 0, 80 31, 81 31 + 28, 82 31 + 28 + 31, 83 31 + 28 + 31 + 30, 84 31 + 28 + 31 + 30 + 31, 85 31 + 28 + 31 + 30 + 31 + 30, 86 31 + 28 + 31 + 30 + 31 + 30 + 31, 87 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31, 88 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30, 89 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, 90 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, 91 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }, 92 {0, 93 0, 94 31, 95 31 + 29, 96 31 + 29 + 31, 97 31 + 29 + 31 + 30, 98 31 + 29 + 31 + 30 + 31, 99 31 + 29 + 31 + 30 + 31 + 30, 100 31 + 29 + 31 + 30 + 31 + 30 + 31, 101 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31, 102 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30, 103 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, 104 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, 105 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }}; 106 107 time_t UTime; 108 int Year; 109 110 ETime->Year += 1900; 111 112 /* 113 // Do a santity check 114 */ 115 if ( ETime->Year < 1998 || ETime->Year > 2099 || 116 ETime->Month == 0 || ETime->Month > 12 || 117 ETime->Day == 0 || ETime->Month > 31 || 118 ETime->Hour > 23 || 119 ETime->Minute > 59 || 120 ETime->Second > 59 ) { 121 return (0); 122 } 123 124 /* 125 // Years 126 */ 127 UTime = 0; 128 for (Year = 1970; Year != ETime->Year; ++Year) { 129 UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY); 130 } 131 132 /* 133 // UTime should now be set to 00:00:00 on Jan 1 of the file's year. 134 // 135 // Months 136 */ 137 UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY); 138 139 /* 140 // UTime should now be set to 00:00:00 on the first of the file's month and year 141 // 142 // Days -- Don't count the file's day 143 */ 144 UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY); 145 146 /* 147 // Hours 148 */ 149 UTime += (ETime->Hour * SECSPERHOUR); 150 151 /* 152 // Minutes 153 */ 154 UTime += (ETime->Minute * 60); 155 156 /* 157 // Seconds 158 */ 159 UTime += ETime->Second; 160 161 return UTime; 162 } 163 164 time_t 165 time(time_t *tloc) 166 { 167 struct ssc_time time; 168 169 ssc((u_int64_t) &time, 0, 0, 0, SSC_GET_RTC); 170 171 return *tloc = EfiTimeToUnixTime(&time); 172 } 173 174 time_t 175 getsecs(void) 176 { 177 return time(0); 178 } 179
Indexes created Sun Oct 25 00:26:45 UTC 2026