1 /*- 2 * Copyright (c) 1996 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Gordon W. Ross 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 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $NetBSD: clock_subr.h,v 1.7 2000/10/03 13:41:07 tsutsui Exp $ 30 * 31 * 32 * This file is the central clearing-house for calendrical issues. 33 * 34 * In general the kernel does not know about minutes, hours, days, timezones, 35 * daylight savings time, leap-years and such. All that is theoretically a 36 * matter for userland only. 37 * 38 * Parts of kernel code does however care: badly designed filesystems store 39 * timestamps in local time and RTC chips sometimes track time in a local 40 * timezone instead of UTC and so on. 41 * 42 * All that code should go here for service. 43 */ 44 45 #ifndef _COMPAT_FREEBSD_SYS_CLOCK_H_ 46 #define _COMPAT_FREEBSD_SYS_CLOCK_H_ 47 48 #include_next <sys/clock.h> 49 50 #ifdef _KERNEL /* No user serviceable parts */ 51 52 /* 53 * Structure to hold the values typically reported by time-of-day clocks. 54 * This can be passed to the generic conversion functions to be converted 55 * to a struct timespec. 56 */ 57 struct clocktime { 58 int year; /* year (4 digit year) */ 59 int mon; /* month (1 - 12) */ 60 int day; /* day (1 - 31) */ 61 int hour; /* hour (0 - 23) */ 62 int min; /* minute (0 - 59) */ 63 int sec; /* second (0 - 59) */ 64 int dow; /* day of week (0 - 6; 0 = Sunday) */ 65 long nsec; /* nano seconds */ 66 }; 67 68 int clock_ct_to_ts(struct clocktime *, struct timespec *); 69 void clock_ts_to_ct(struct timespec *, struct clocktime *); 70 71 /* Some handy constants. */ 72 #define SECDAY (24 * 60 * 60) 73 #define SECYR (SECDAY * 365) 74 75 /* Traditional POSIX base year */ 76 #define POSIX_BASE_YEAR 1970 77 78 void timespec2fattime(struct timespec *tsp, int utc, u_int16_t *ddp, u_int16_t *dtp, u_int8_t *dhp); 79 void fattime2timespec(unsigned dd, unsigned dt, unsigned dh, int utc, struct timespec *tsp); 80 81 #endif /* _KERNEL */ 82 83 #endif /* _COMPAT_FREEBSD_SYS_CLOCK_H_ */ 84