xref: /illumos-gate/usr/src/compat/bhyve/sys/clock.h (revision 32640292)
14c87aefeSPatrick Mooney /*-
24c87aefeSPatrick Mooney  * Copyright (c) 1996 The NetBSD Foundation, Inc.
34c87aefeSPatrick Mooney  * All rights reserved.
44c87aefeSPatrick Mooney  *
54c87aefeSPatrick Mooney  * This code is derived from software contributed to The NetBSD Foundation
64c87aefeSPatrick Mooney  * by Gordon W. Ross
74c87aefeSPatrick Mooney  *
84c87aefeSPatrick Mooney  * Redistribution and use in source and binary forms, with or without
94c87aefeSPatrick Mooney  * modification, are permitted provided that the following conditions
104c87aefeSPatrick Mooney  * are met:
114c87aefeSPatrick Mooney  * 1. Redistributions of source code must retain the above copyright
124c87aefeSPatrick Mooney  *    notice, this list of conditions and the following disclaimer.
134c87aefeSPatrick Mooney  * 2. Redistributions in binary form must reproduce the above copyright
144c87aefeSPatrick Mooney  *    notice, this list of conditions and the following disclaimer in the
154c87aefeSPatrick Mooney  *    documentation and/or other materials provided with the distribution.
164c87aefeSPatrick Mooney  *
174c87aefeSPatrick Mooney  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
184c87aefeSPatrick Mooney  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
194c87aefeSPatrick Mooney  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
204c87aefeSPatrick Mooney  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
214c87aefeSPatrick Mooney  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
224c87aefeSPatrick Mooney  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
234c87aefeSPatrick Mooney  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
244c87aefeSPatrick Mooney  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
254c87aefeSPatrick Mooney  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
264c87aefeSPatrick Mooney  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
274c87aefeSPatrick Mooney  * POSSIBILITY OF SUCH DAMAGE.
284c87aefeSPatrick Mooney  *
294c87aefeSPatrick Mooney  *	$NetBSD: clock_subr.h,v 1.7 2000/10/03 13:41:07 tsutsui Exp $
304c87aefeSPatrick Mooney  *
314c87aefeSPatrick Mooney  *
324c87aefeSPatrick Mooney  * This file is the central clearing-house for calendrical issues.
334c87aefeSPatrick Mooney  *
344c87aefeSPatrick Mooney  * In general the kernel does not know about minutes, hours, days, timezones,
354c87aefeSPatrick Mooney  * daylight savings time, leap-years and such.  All that is theoretically a
364c87aefeSPatrick Mooney  * matter for userland only.
374c87aefeSPatrick Mooney  *
384c87aefeSPatrick Mooney  * Parts of kernel code does however care: badly designed filesystems store
394c87aefeSPatrick Mooney  * timestamps in local time and RTC chips sometimes track time in a local
404c87aefeSPatrick Mooney  * timezone instead of UTC and so on.
414c87aefeSPatrick Mooney  *
424c87aefeSPatrick Mooney  * All that code should go here for service.
434c87aefeSPatrick Mooney  */
444c87aefeSPatrick Mooney 
454c87aefeSPatrick Mooney #ifndef _COMPAT_FREEBSD_SYS_CLOCK_H_
464c87aefeSPatrick Mooney #define	_COMPAT_FREEBSD_SYS_CLOCK_H_
474c87aefeSPatrick Mooney 
484c87aefeSPatrick Mooney #include_next <sys/clock.h>
494c87aefeSPatrick Mooney 
504c87aefeSPatrick Mooney #ifdef _KERNEL		/* No user serviceable parts */
514c87aefeSPatrick Mooney 
524c87aefeSPatrick Mooney /*
534c87aefeSPatrick Mooney  * Structure to hold the values typically reported by time-of-day clocks.
544c87aefeSPatrick Mooney  * This can be passed to the generic conversion functions to be converted
554c87aefeSPatrick Mooney  * to a struct timespec.
564c87aefeSPatrick Mooney  */
574c87aefeSPatrick Mooney struct clocktime {
584c87aefeSPatrick Mooney 	int	year;			/* year (4 digit year) */
594c87aefeSPatrick Mooney 	int	mon;			/* month (1 - 12) */
604c87aefeSPatrick Mooney 	int	day;			/* day (1 - 31) */
614c87aefeSPatrick Mooney 	int	hour;			/* hour (0 - 23) */
624c87aefeSPatrick Mooney 	int	min;			/* minute (0 - 59) */
634c87aefeSPatrick Mooney 	int	sec;			/* second (0 - 59) */
644c87aefeSPatrick Mooney 	int	dow;			/* day of week (0 - 6; 0 = Sunday) */
654c87aefeSPatrick Mooney 	long	nsec;			/* nano seconds */
664c87aefeSPatrick Mooney };
674c87aefeSPatrick Mooney 
684c87aefeSPatrick Mooney int clock_ct_to_ts(struct clocktime *, struct timespec *);
694c87aefeSPatrick Mooney void clock_ts_to_ct(struct timespec *, struct clocktime *);
704c87aefeSPatrick Mooney 
714c87aefeSPatrick Mooney /* Some handy constants. */
724c87aefeSPatrick Mooney #define SECDAY		(24 * 60 * 60)
734c87aefeSPatrick Mooney #define SECYR		(SECDAY * 365)
744c87aefeSPatrick Mooney 
754c87aefeSPatrick Mooney /* Traditional POSIX base year */
764c87aefeSPatrick Mooney #define	POSIX_BASE_YEAR	1970
774c87aefeSPatrick Mooney 
784c87aefeSPatrick Mooney void timespec2fattime(struct timespec *tsp, int utc, u_int16_t *ddp, u_int16_t *dtp, u_int8_t *dhp);
794c87aefeSPatrick Mooney void fattime2timespec(unsigned dd, unsigned dt, unsigned dh, int utc, struct timespec *tsp);
804c87aefeSPatrick Mooney 
814c87aefeSPatrick Mooney #endif /* _KERNEL */
824c87aefeSPatrick Mooney 
834c87aefeSPatrick Mooney #endif	/* _COMPAT_FREEBSD_SYS_CLOCK_H_ */
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