time.c revision 1.1.2.2
1 1.1.2.2 yamt /* $NetBSD: time.c,v 1.1.2.2 2006/04/11 11:53:42 yamt Exp $ */ 2 1.1.2.2 yamt 3 1.1.2.2 yamt /*- 4 1.1.2.2 yamt * Copyright (c) 1999, 2000 5 1.1.2.2 yamt * Intel Corporation. 6 1.1.2.2 yamt * All rights reserved. 7 1.1.2.2 yamt * 8 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 9 1.1.2.2 yamt * modification, are permitted provided that the following conditions 10 1.1.2.2 yamt * are met: 11 1.1.2.2 yamt * 12 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 13 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 14 1.1.2.2 yamt * 15 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 yamt * documentation and/or other materials provided with the distribution. 18 1.1.2.2 yamt * 19 1.1.2.2 yamt * 3. All advertising materials mentioning features or use of this software 20 1.1.2.2 yamt * must display the following acknowledgement: 21 1.1.2.2 yamt * 22 1.1.2.2 yamt * This product includes software developed by Intel Corporation and 23 1.1.2.2 yamt * its contributors. 24 1.1.2.2 yamt * 25 1.1.2.2 yamt * 4. Neither the name of Intel Corporation or its contributors may be 26 1.1.2.2 yamt * used to endorse or promote products derived from this software 27 1.1.2.2 yamt * without specific prior written permission. 28 1.1.2.2 yamt * 29 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS'' 30 1.1.2.2 yamt * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 1.1.2.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 1.1.2.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE 33 1.1.2.2 yamt * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 34 1.1.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 35 1.1.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 36 1.1.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 37 1.1.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 1.1.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 39 1.1.2.2 yamt * THE POSSIBILITY OF SUCH DAMAGE. 40 1.1.2.2 yamt * 41 1.1.2.2 yamt */ 42 1.1.2.2 yamt 43 1.1.2.2 yamt #include <sys/cdefs.h> 44 1.1.2.2 yamt 45 1.1.2.2 yamt #include <efi.h> 46 1.1.2.2 yamt #include <efilib.h> 47 1.1.2.2 yamt 48 1.1.2.2 yamt #include <sys/time.h> 49 1.1.2.2 yamt 50 1.1.2.2 yamt /* 51 1.1.2.2 yamt // Accurate only for the past couple of centuries; 52 1.1.2.2 yamt // that will probably do. 53 1.1.2.2 yamt // 54 1.1.2.2 yamt // (#defines From FreeBSD 3.2 lib/libc/stdtime/tzfile.h) 55 1.1.2.2 yamt */ 56 1.1.2.2 yamt 57 1.1.2.2 yamt #define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0)) 58 1.1.2.2 yamt #define SECSPERHOUR ( 60*60 ) 59 1.1.2.2 yamt #define SECSPERDAY (24 * SECSPERHOUR) 60 1.1.2.2 yamt 61 1.1.2.2 yamt time_t 62 1.1.2.2 yamt EfiTimeToUnixTime(EFI_TIME *ETime) 63 1.1.2.2 yamt { 64 1.1.2.2 yamt /* 65 1.1.2.2 yamt // These arrays give the cumulative number of days up to the first of the 66 1.1.2.2 yamt // month number used as the index (1 -> 12) for regular and leap years. 67 1.1.2.2 yamt // The value at index 13 is for the whole year. 68 1.1.2.2 yamt */ 69 1.1.2.2 yamt static time_t CumulativeDays[2][14] = { 70 1.1.2.2 yamt {0, 71 1.1.2.2 yamt 0, 72 1.1.2.2 yamt 31, 73 1.1.2.2 yamt 31 + 28, 74 1.1.2.2 yamt 31 + 28 + 31, 75 1.1.2.2 yamt 31 + 28 + 31 + 30, 76 1.1.2.2 yamt 31 + 28 + 31 + 30 + 31, 77 1.1.2.2 yamt 31 + 28 + 31 + 30 + 31 + 30, 78 1.1.2.2 yamt 31 + 28 + 31 + 30 + 31 + 30 + 31, 79 1.1.2.2 yamt 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31, 80 1.1.2.2 yamt 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30, 81 1.1.2.2 yamt 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, 82 1.1.2.2 yamt 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, 83 1.1.2.2 yamt 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }, 84 1.1.2.2 yamt {0, 85 1.1.2.2 yamt 0, 86 1.1.2.2 yamt 31, 87 1.1.2.2 yamt 31 + 29, 88 1.1.2.2 yamt 31 + 29 + 31, 89 1.1.2.2 yamt 31 + 29 + 31 + 30, 90 1.1.2.2 yamt 31 + 29 + 31 + 30 + 31, 91 1.1.2.2 yamt 31 + 29 + 31 + 30 + 31 + 30, 92 1.1.2.2 yamt 31 + 29 + 31 + 30 + 31 + 30 + 31, 93 1.1.2.2 yamt 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31, 94 1.1.2.2 yamt 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30, 95 1.1.2.2 yamt 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, 96 1.1.2.2 yamt 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, 97 1.1.2.2 yamt 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }}; 98 1.1.2.2 yamt 99 1.1.2.2 yamt time_t UTime; 100 1.1.2.2 yamt int Year; 101 1.1.2.2 yamt 102 1.1.2.2 yamt /* 103 1.1.2.2 yamt // Do a santity check 104 1.1.2.2 yamt */ 105 1.1.2.2 yamt if ( ETime->Year < 1998 || ETime->Year > 2099 || 106 1.1.2.2 yamt ETime->Month == 0 || ETime->Month > 12 || 107 1.1.2.2 yamt ETime->Day == 0 || ETime->Month > 31 || 108 1.1.2.2 yamt ETime->Hour > 23 || 109 1.1.2.2 yamt ETime->Minute > 59 || 110 1.1.2.2 yamt ETime->Second > 59 || 111 1.1.2.2 yamt ETime->TimeZone < -1440 || 112 1.1.2.2 yamt (ETime->TimeZone > 1440 && ETime->TimeZone != 2047) ) { 113 1.1.2.2 yamt return (0); 114 1.1.2.2 yamt } 115 1.1.2.2 yamt 116 1.1.2.2 yamt /* 117 1.1.2.2 yamt // Years 118 1.1.2.2 yamt */ 119 1.1.2.2 yamt UTime = 0; 120 1.1.2.2 yamt for (Year = 1970; Year != ETime->Year; ++Year) { 121 1.1.2.2 yamt UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY); 122 1.1.2.2 yamt } 123 1.1.2.2 yamt 124 1.1.2.2 yamt /* 125 1.1.2.2 yamt // UTime should now be set to 00:00:00 on Jan 1 of the file's year. 126 1.1.2.2 yamt // 127 1.1.2.2 yamt // Months 128 1.1.2.2 yamt */ 129 1.1.2.2 yamt UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY); 130 1.1.2.2 yamt 131 1.1.2.2 yamt /* 132 1.1.2.2 yamt // UTime should now be set to 00:00:00 on the first of the file's month and year 133 1.1.2.2 yamt // 134 1.1.2.2 yamt // Days -- Don't count the file's day 135 1.1.2.2 yamt */ 136 1.1.2.2 yamt UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY); 137 1.1.2.2 yamt 138 1.1.2.2 yamt /* 139 1.1.2.2 yamt // Hours 140 1.1.2.2 yamt */ 141 1.1.2.2 yamt UTime += (ETime->Hour * SECSPERHOUR); 142 1.1.2.2 yamt 143 1.1.2.2 yamt /* 144 1.1.2.2 yamt // Minutes 145 1.1.2.2 yamt */ 146 1.1.2.2 yamt UTime += (ETime->Minute * 60); 147 1.1.2.2 yamt 148 1.1.2.2 yamt /* 149 1.1.2.2 yamt // Seconds 150 1.1.2.2 yamt */ 151 1.1.2.2 yamt UTime += ETime->Second; 152 1.1.2.2 yamt 153 1.1.2.2 yamt /* 154 1.1.2.2 yamt // EFI time is repored in local time. Adjust for any time zone offset to 155 1.1.2.2 yamt // get true UT 156 1.1.2.2 yamt */ 157 1.1.2.2 yamt if ( ETime->TimeZone != EFI_UNSPECIFIED_TIMEZONE ) { 158 1.1.2.2 yamt /* 159 1.1.2.2 yamt // TimeZone is kept in minues... 160 1.1.2.2 yamt */ 161 1.1.2.2 yamt UTime += (ETime->TimeZone * 60); 162 1.1.2.2 yamt } 163 1.1.2.2 yamt 164 1.1.2.2 yamt return UTime; 165 1.1.2.2 yamt } 166 1.1.2.2 yamt 167 1.1.2.2 yamt int 168 1.1.2.2 yamt EFI_GetTimeOfDay( 169 1.1.2.2 yamt OUT struct timeval *tp, 170 1.1.2.2 yamt OUT struct timezone *tzp 171 1.1.2.2 yamt ) 172 1.1.2.2 yamt { 173 1.1.2.2 yamt EFI_TIME EfiTime; 174 1.1.2.2 yamt EFI_TIME_CAPABILITIES Capabilities; 175 1.1.2.2 yamt EFI_STATUS Status; 176 1.1.2.2 yamt 177 1.1.2.2 yamt /* 178 1.1.2.2 yamt // Get time from EFI 179 1.1.2.2 yamt */ 180 1.1.2.2 yamt 181 1.1.2.2 yamt Status = RS->GetTime( &EfiTime, &Capabilities ); 182 1.1.2.2 yamt if (EFI_ERROR(Status)) 183 1.1.2.2 yamt return (-1); 184 1.1.2.2 yamt 185 1.1.2.2 yamt /* 186 1.1.2.2 yamt // Convert to UNIX time (ie seconds since the epoch 187 1.1.2.2 yamt */ 188 1.1.2.2 yamt 189 1.1.2.2 yamt tp->tv_sec = EfiTimeToUnixTime( &EfiTime ); 190 1.1.2.2 yamt tp->tv_usec = 0; /* EfiTime.Nanosecond * 1000; */ 191 1.1.2.2 yamt 192 1.1.2.2 yamt /* 193 1.1.2.2 yamt // Do something with the timezone if needed 194 1.1.2.2 yamt */ 195 1.1.2.2 yamt 196 1.1.2.2 yamt if (tzp) { 197 1.1.2.2 yamt tzp->tz_minuteswest = 198 1.1.2.2 yamt EfiTime.TimeZone == EFI_UNSPECIFIED_TIMEZONE ? 0 : EfiTime.TimeZone; 199 1.1.2.2 yamt /* 200 1.1.2.2 yamt // This isn't quit right since it doesn't deal with EFI_TIME_IN_DAYLIGHT 201 1.1.2.2 yamt */ 202 1.1.2.2 yamt tzp->tz_dsttime = 203 1.1.2.2 yamt EfiTime.Daylight & EFI_TIME_ADJUST_DAYLIGHT ? 1 : 0; 204 1.1.2.2 yamt } 205 1.1.2.2 yamt 206 1.1.2.2 yamt return (0); 207 1.1.2.2 yamt } 208 1.1.2.2 yamt 209 1.1.2.2 yamt time_t 210 1.1.2.2 yamt time(time_t *tloc) 211 1.1.2.2 yamt { 212 1.1.2.2 yamt struct timeval tv; 213 1.1.2.2 yamt EFI_GetTimeOfDay(&tv, 0); 214 1.1.2.2 yamt 215 1.1.2.2 yamt if (tloc) 216 1.1.2.2 yamt *tloc = tv.tv_sec; 217 1.1.2.2 yamt return tv.tv_sec; 218 1.1.2.2 yamt } 219 1.1.2.2 yamt 220 1.1.2.2 yamt time_t 221 1.1.2.2 yamt getsecs() 222 1.1.2.2 yamt { 223 1.1.2.2 yamt return time(0); 224 1.1.2.2 yamt } 225
Indexes created Thu Sep 25 16:09:42 GMT 2025