Commit Graph

22 Commits

Author SHA1 Message Date
Brooks Davis
ee9bc59982 Fix a 2038 bug.
If time_t is 64-bit (i.e. isn't 32-bit) allow any value of year, not
just years less than 2038.

Don't bother fixing the underflow in the case of years before 1903.

MFC after:	1 week
Sponsored by:	DARPA, AFRL
2014-05-01 22:28:14 +00:00
Bjoern A. Zeeb
8d12fab9ae Improve style and wording of comments and sysctl descriptions [1].
Move machdep.ct_debug to debug.clocktime as there was no reason to
actually put it under machdep in r216340.

Submitted by:	bde [1]
MFC after:	3 days
2011-01-09 14:34:56 +00:00
Bjoern A. Zeeb
4befa84f9c Don't tie ct_debug to bootverbose. Provide a sysctl to turn it on or off.
Switch the default to always off.

Reviewed by:	kib
2010-12-09 22:02:48 +00:00
Rebecca Cran
8d065a3914 Fix some more style(9) issues. 2010-11-14 16:10:15 +00:00
Rebecca Cran
b389be97db Fix style(9) issues from r215281 and r215282.
MFC after:	1 week
2010-11-14 08:06:29 +00:00
Rebecca Cran
2baa5cddb6 Add some descriptions to sys/kern sysctls.
PR:	kern/148710
Tested by:	Chip Camden <sterling at camdensoftware.com>
MFC after:	1 week
2010-11-14 06:09:50 +00:00
Nathan Whitehorn
c8593f7c4d Fix an XXX comment by answering 'no'. OS X does not set the day-of-week
counter on SMU-based systems, which causes FreeBSD to reject the RTC time
when used in a dual-boot environment. Since we don't use the day-of-week
counter anyway, solve this by just not checking that it matches.

MFC after:	3 weeks
2010-10-17 17:31:49 +00:00
Poul-Henning Kamp
9b4a8ab7ba Now that all platforms use genclock, shuffle things around slightly
for better structure.

Much of this is related to <sys/clock.h>, which should really have
been called <sys/calendar.h>, but unless and until we need the name,
the repocopy can wait.

In general the kernel does not know about minutes, hours, days,
timezones, daylight savings time, leap-years and such.  All that
is theoretically a matter for userland only.

Parts of kernel code does however care: badly designed filesystems
store timestamps in local time and RTC chips almost universally
track time in a YY-MM-DD HH:MM:SS format, and sometimes in local
timezone instead of UTC.  For this we have <sys/clock.h>

<sys/time.h> on the other hand, deals with time_t, timeval, timespec
and so on.  These know only seconds and fractions thereof.

Move inittodr() and resettodr() prototypes to <sys/time.h>.
Retain the names as it is one of the few surviving PDP/VAX references.

Move startrtclock() to <machine/clock.h> on relevant platforms, it
is a MD call between machdep.c/clock.c.  Remove references to it
elsewhere.

Remove a lot of unnecessary <sys/clock.h> includes.

Move the machdep.disable_rtc_set sysctl to subr_rtc.c where it belongs.
XXX: should be kern.disable_rtc_set really, it's not MD.
2008-04-22 19:38:30 +00:00
Poul-Henning Kamp
8d24f82310 fix printf type confusion on amd64 2008-04-12 21:51:54 +00:00
Poul-Henning Kamp
c9ad6040dd Emit summaries of struct c(alender)t(ime) <-> struct timespec conversions
under bootverbose.

Struct ct is used for setting/reading real time clocks and I'm about
to Do Things to some of those, so a bit of preemptive debugging is
in order.

Remove a pointless __inline.
2008-04-12 20:35:56 +00:00
David Malone
6d8617d42a If clock_ct_to_ts fails to convert time time from the real time clock,
print a one line error message. Add some comments on not being able to
trust the day of week field (I'll act on these comments in a follow up
commit).

Approved by:	re
MFC after:	3 weeks
2007-07-23 09:42:32 +00:00
Poul-Henning Kamp
e5037a18a9 Use utc_offset() where applicable, and hide the internals of it
as static variables.
2006-10-02 18:23:37 +00:00
Poul-Henning Kamp
f97c1c4bf7 Introduce utc_offset() to capture a calculation currently done all over the
place.
2006-10-02 16:17:23 +00:00
Poul-Henning Kamp
94d67e0fb8 Move tz_minuteswest and tz_dsttime to subr_clock.c 2006-10-02 16:06:26 +00:00
Poul-Henning Kamp
b69f71eb29 Second part of a little cleanup in the calendar/timezone/RTC handling.
Split subr_clock.c in two parts (by repo-copy):
   subr_clock.c contains generic RTC and calendaric stuff. etc.
   subr_rtc.c contains the newbus'ified RTC interface.

Centralize the machdep.{adjkerntz,disable_rtc_set,wall_cmos_clock}
sysctls and associated variables into subr_clock.c.  They are
not machine dependent and we have generic code that relies on being
present so they are not even optional.
2006-10-02 15:42:02 +00:00
Poul-Henning Kamp
99ab8292c7 Remove more straggling CPU_ macro references 2006-05-11 17:53:26 +00:00
Warner Losh
9454b2d864 /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
Warner Losh
7f8a436ff2 Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core
2004-04-05 21:03:37 +00:00
David E. O'Brien
677b542ea2 Use __FBSDID(). 2003-06-11 00:56:59 +00:00
Poul-Henning Kamp
91f1c2b3cc Split the global timezone structure into two integer fields to
prevent the compiler from optimizing assignments into byte-copy
operations which might make access to the individual fields non-atomic.

Use the individual fields throughout, and don't bother locking them with
Giant: it is no longer needed.

Inspired by:    tjr
2003-02-03 19:49:35 +00:00
Thomas Moestl
d88d37d604 Use the CPU_* OID constants instead of OID_AUTO for the clock-related
sysctls for compatability with old applications.
2002-08-07 19:43:54 +00:00
Thomas Moestl
d7f7792edf Add a generic implementation of inittodr() and resettodr(), as well as
a set of helper routines to deal with real-time clocks. The generic
functions access the clock diver using a kobj interface. This is intended
to reduce code reduplication and make it easy to support more than one
clock model on a single architecture.

This code is currently only used on sparc64, but it is planned to convert
the code of the other architectures to it later.
2002-04-04 23:39:10 +00:00