1 /* $NetBSD: efigetsecs.c,v 1.1 2017/01/24 11:09:14 nonaka Exp $ */ 2 3 /* 4 * Copyright (c) 2015 YASUOKA Masahiko <yasuoka@yasuoka.net> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include "efiboot.h" 20 21 #include <lib/libsa/net.h> 22 23 satime_t 24 getsecs(void) 25 { 26 static const int daytab[][14] = { 27 { 0, -1, 30, 58, 89, 119, 150, 180, 211, 242, 272, 303, 333, 364 }, 28 { 0, -1, 30, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, 29 }; 30 EFI_TIME t; 31 satime_t r; 32 int y; 33 #define isleap(_y) (((_y) % 4) == 0 && (((_y) % 100) != 0 || ((_y) % 400) == 0)) 34 35 uefi_call_wrapper(RT->GetTime, 2, &t, NULL); 36 37 /* Calc days from UNIX epoch */ 38 r = (t.Year - 1970) * 365; 39 for (y = 1970; y < t.Year; y++) { 40 if (isleap(y)) 41 r++; 42 } 43 r += daytab[isleap(t.Year) ? 1 : 0][t.Month] + t.Day; 44 45 /* Calc secs */ 46 r *= 60 * 60 * 24; 47 r += ((t.Hour * 60) + t.Minute) * 60 + t.Second; 48 if (-24 * 60 < t.TimeZone && t.TimeZone < 24 * 60) 49 r += t.TimeZone * 60; 50 51 return r; 52 } 53