time.c revision 1.2.2.2
1 1.2.2.2 simonb /* $NetBSD: time.c,v 1.2.2.2 2006/04/22 11:37:39 simonb Exp $ */ 2 1.2.2.2 simonb 3 1.2.2.2 simonb /*- 4 1.2.2.2 simonb * Copyright (c) 1999, 2000 5 1.2.2.2 simonb * Intel Corporation. 6 1.2.2.2 simonb * All rights reserved. 7 1.2.2.2 simonb * 8 1.2.2.2 simonb * Redistribution and use in source and binary forms, with or without 9 1.2.2.2 simonb * modification, are permitted provided that the following conditions 10 1.2.2.2 simonb * are met: 11 1.2.2.2 simonb * 12 1.2.2.2 simonb * 1. Redistributions of source code must retain the above copyright 13 1.2.2.2 simonb * notice, this list of conditions and the following disclaimer. 14 1.2.2.2 simonb * 15 1.2.2.2 simonb * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 simonb * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 simonb * documentation and/or other materials provided with the distribution. 18 1.2.2.2 simonb * 19 1.2.2.2 simonb * 3. All advertising materials mentioning features or use of this software 20 1.2.2.2 simonb * must display the following acknowledgement: 21 1.2.2.2 simonb * 22 1.2.2.2 simonb * This product includes software developed by Intel Corporation and 23 1.2.2.2 simonb * its contributors. 24 1.2.2.2 simonb * 25 1.2.2.2 simonb * 4. Neither the name of Intel Corporation or its contributors may be 26 1.2.2.2 simonb * used to endorse or promote products derived from this software 27 1.2.2.2 simonb * without specific prior written permission. 28 1.2.2.2 simonb * 29 1.2.2.2 simonb * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS'' 30 1.2.2.2 simonb * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 1.2.2.2 simonb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 1.2.2.2 simonb * ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE 33 1.2.2.2 simonb * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 34 1.2.2.2 simonb * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 35 1.2.2.2 simonb * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 36 1.2.2.2 simonb * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 37 1.2.2.2 simonb * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 1.2.2.2 simonb * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 39 1.2.2.2 simonb * THE POSSIBILITY OF SUCH DAMAGE. 40 1.2.2.2 simonb * 41 1.2.2.2 simonb */ 42 1.2.2.2 simonb 43 1.2.2.2 simonb #include <sys/cdefs.h> 44 1.2.2.2 simonb 45 1.2.2.2 simonb #include <efi.h> 46 1.2.2.2 simonb #include <efilib.h> 47 1.2.2.2 simonb 48 1.2.2.2 simonb #include <sys/time.h> 49 1.2.2.2 simonb 50 1.2.2.2 simonb /* 51 1.2.2.2 simonb // Accurate only for the past couple of centuries; 52 1.2.2.2 simonb // that will probably do. 53 1.2.2.2 simonb // 54 1.2.2.2 simonb // (#defines From FreeBSD 3.2 lib/libc/stdtime/tzfile.h) 55 1.2.2.2 simonb */ 56 1.2.2.2 simonb 57 1.2.2.2 simonb #define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0)) 58 1.2.2.2 simonb #define SECSPERHOUR ( 60*60 ) 59 1.2.2.2 simonb #define SECSPERDAY (24 * SECSPERHOUR) 60 1.2.2.2 simonb 61 1.2.2.2 simonb time_t 62 1.2.2.2 simonb EfiTimeToUnixTime(EFI_TIME *ETime) 63 1.2.2.2 simonb { 64 1.2.2.2 simonb /* 65 1.2.2.2 simonb // These arrays give the cumulative number of days up to the first of the 66 1.2.2.2 simonb // month number used as the index (1 -> 12) for regular and leap years. 67 1.2.2.2 simonb // The value at index 13 is for the whole year. 68 1.2.2.2 simonb */ 69 1.2.2.2 simonb static time_t CumulativeDays[2][14] = { 70 1.2.2.2 simonb {0, 71 1.2.2.2 simonb 0, 72 1.2.2.2 simonb 31, 73 1.2.2.2 simonb 31 + 28, 74 1.2.2.2 simonb 31 + 28 + 31, 75 1.2.2.2 simonb 31 + 28 + 31 + 30, 76 1.2.2.2 simonb 31 + 28 + 31 + 30 + 31, 77 1.2.2.2 simonb 31 + 28 + 31 + 30 + 31 + 30, 78 1.2.2.2 simonb 31 + 28 + 31 + 30 + 31 + 30 + 31, 79 1.2.2.2 simonb 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31, 80 1.2.2.2 simonb 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30, 81 1.2.2.2 simonb 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, 82 1.2.2.2 simonb 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, 83 1.2.2.2 simonb 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }, 84 1.2.2.2 simonb {0, 85 1.2.2.2 simonb 0, 86 1.2.2.2 simonb 31, 87 1.2.2.2 simonb 31 + 29, 88 1.2.2.2 simonb 31 + 29 + 31, 89 1.2.2.2 simonb 31 + 29 + 31 + 30, 90 1.2.2.2 simonb 31 + 29 + 31 + 30 + 31, 91 1.2.2.2 simonb 31 + 29 + 31 + 30 + 31 + 30, 92 1.2.2.2 simonb 31 + 29 + 31 + 30 + 31 + 30 + 31, 93 1.2.2.2 simonb 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31, 94 1.2.2.2 simonb 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30, 95 1.2.2.2 simonb 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, 96 1.2.2.2 simonb 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, 97 1.2.2.2 simonb 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }}; 98 1.2.2.2 simonb 99 1.2.2.2 simonb time_t UTime; 100 1.2.2.2 simonb int Year; 101 1.2.2.2 simonb 102 1.2.2.2 simonb /* 103 1.2.2.2 simonb // Do a santity check 104 1.2.2.2 simonb */ 105 1.2.2.2 simonb if ( ETime->Year < 1998 || ETime->Year > 2099 || 106 1.2.2.2 simonb ETime->Month == 0 || ETime->Month > 12 || 107 1.2.2.2 simonb ETime->Day == 0 || ETime->Month > 31 || 108 1.2.2.2 simonb ETime->Hour > 23 || 109 1.2.2.2 simonb ETime->Minute > 59 || 110 1.2.2.2 simonb ETime->Second > 59 || 111 1.2.2.2 simonb ETime->TimeZone < -1440 || 112 1.2.2.2 simonb (ETime->TimeZone > 1440 && ETime->TimeZone != 2047) ) { 113 1.2.2.2 simonb return (0); 114 1.2.2.2 simonb } 115 1.2.2.2 simonb 116 1.2.2.2 simonb /* 117 1.2.2.2 simonb // Years 118 1.2.2.2 simonb */ 119 1.2.2.2 simonb UTime = 0; 120 1.2.2.2 simonb for (Year = 1970; Year != ETime->Year; ++Year) { 121 1.2.2.2 simonb UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY); 122 1.2.2.2 simonb } 123 1.2.2.2 simonb 124 1.2.2.2 simonb /* 125 1.2.2.2 simonb // UTime should now be set to 00:00:00 on Jan 1 of the file's year. 126 1.2.2.2 simonb // 127 1.2.2.2 simonb // Months 128 1.2.2.2 simonb */ 129 1.2.2.2 simonb UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY); 130 1.2.2.2 simonb 131 1.2.2.2 simonb /* 132 1.2.2.2 simonb // UTime should now be set to 00:00:00 on the first of the file's month and year 133 1.2.2.2 simonb // 134 1.2.2.2 simonb // Days -- Don't count the file's day 135 1.2.2.2 simonb */ 136 1.2.2.2 simonb UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY); 137 1.2.2.2 simonb 138 1.2.2.2 simonb /* 139 1.2.2.2 simonb // Hours 140 1.2.2.2 simonb */ 141 1.2.2.2 simonb UTime += (ETime->Hour * SECSPERHOUR); 142 1.2.2.2 simonb 143 1.2.2.2 simonb /* 144 1.2.2.2 simonb // Minutes 145 1.2.2.2 simonb */ 146 1.2.2.2 simonb UTime += (ETime->Minute * 60); 147 1.2.2.2 simonb 148 1.2.2.2 simonb /* 149 1.2.2.2 simonb // Seconds 150 1.2.2.2 simonb */ 151 1.2.2.2 simonb UTime += ETime->Second; 152 1.2.2.2 simonb 153 1.2.2.2 simonb /* 154 1.2.2.2 simonb // EFI time is repored in local time. Adjust for any time zone offset to 155 1.2.2.2 simonb // get true UT 156 1.2.2.2 simonb */ 157 1.2.2.2 simonb if ( ETime->TimeZone != EFI_UNSPECIFIED_TIMEZONE ) { 158 1.2.2.2 simonb /* 159 1.2.2.2 simonb // TimeZone is kept in minues... 160 1.2.2.2 simonb */ 161 1.2.2.2 simonb UTime += (ETime->TimeZone * 60); 162 1.2.2.2 simonb } 163 1.2.2.2 simonb 164 1.2.2.2 simonb return UTime; 165 1.2.2.2 simonb } 166 1.2.2.2 simonb 167 1.2.2.2 simonb int 168 1.2.2.2 simonb EFI_GetTimeOfDay( 169 1.2.2.2 simonb OUT struct timeval *tp, 170 1.2.2.2 simonb OUT struct timezone *tzp 171 1.2.2.2 simonb ) 172 1.2.2.2 simonb { 173 1.2.2.2 simonb EFI_TIME EfiTime; 174 1.2.2.2 simonb EFI_TIME_CAPABILITIES Capabilities; 175 1.2.2.2 simonb EFI_STATUS Status; 176 1.2.2.2 simonb 177 1.2.2.2 simonb /* 178 1.2.2.2 simonb // Get time from EFI 179 1.2.2.2 simonb */ 180 1.2.2.2 simonb 181 1.2.2.2 simonb Status = RS->GetTime( &EfiTime, &Capabilities ); 182 1.2.2.2 simonb if (EFI_ERROR(Status)) 183 1.2.2.2 simonb return (-1); 184 1.2.2.2 simonb 185 1.2.2.2 simonb /* 186 1.2.2.2 simonb // Convert to UNIX time (ie seconds since the epoch 187 1.2.2.2 simonb */ 188 1.2.2.2 simonb 189 1.2.2.2 simonb tp->tv_sec = EfiTimeToUnixTime( &EfiTime ); 190 1.2.2.2 simonb tp->tv_usec = 0; /* EfiTime.Nanosecond * 1000; */ 191 1.2.2.2 simonb 192 1.2.2.2 simonb /* 193 1.2.2.2 simonb // Do something with the timezone if needed 194 1.2.2.2 simonb */ 195 1.2.2.2 simonb 196 1.2.2.2 simonb if (tzp) { 197 1.2.2.2 simonb tzp->tz_minuteswest = 198 1.2.2.2 simonb EfiTime.TimeZone == EFI_UNSPECIFIED_TIMEZONE ? 0 : EfiTime.TimeZone; 199 1.2.2.2 simonb /* 200 1.2.2.2 simonb // This isn't quit right since it doesn't deal with EFI_TIME_IN_DAYLIGHT 201 1.2.2.2 simonb */ 202 1.2.2.2 simonb tzp->tz_dsttime = 203 1.2.2.2 simonb EfiTime.Daylight & EFI_TIME_ADJUST_DAYLIGHT ? 1 : 0; 204 1.2.2.2 simonb } 205 1.2.2.2 simonb 206 1.2.2.2 simonb return (0); 207 1.2.2.2 simonb } 208 1.2.2.2 simonb 209 1.2.2.2 simonb time_t 210 1.2.2.2 simonb time(time_t *tloc) 211 1.2.2.2 simonb { 212 1.2.2.2 simonb struct timeval tv; 213 1.2.2.2 simonb EFI_GetTimeOfDay(&tv, 0); 214 1.2.2.2 simonb 215 1.2.2.2 simonb if (tloc) 216 1.2.2.2 simonb *tloc = tv.tv_sec; 217 1.2.2.2 simonb return tv.tv_sec; 218 1.2.2.2 simonb } 219 1.2.2.2 simonb 220 1.2.2.2 simonb time_t 221 1.2.2.2 simonb getsecs() 222 1.2.2.2 simonb { 223 1.2.2.2 simonb return time(0); 224 1.2.2.2 simonb } 225
Indexes created Thu Sep 25 16:09:42 GMT 2025