docs: OpenBSD Man Pages Added

1 files changed, 95 insertions, 0 deletions

diff --git a/static/openbsd/man9/inittodr.9 b/static/openbsd/man9/inittodr.9
new file mode 100644
index 00000000..f708d0b9
--- /dev/null
+++ b/static/openbsd/man9/inittodr.9
@@ -0,0 +1,95 @@
+.\"	$OpenBSD: inittodr.9,v 1.12 2020/06/26 18:48:31 cheloha Exp $
+.\"	$NetBSD: inittodr.9,v 1.2 1996/03/27 21:16:06 jtc Exp $
+.\"
+.\" Copyright (c) 1994 Christopher G. Demetriou
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"      This product includes software developed by Christopher G. Demetriou
+.\"      for the NetBSD Project.
+.\" 3. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd $Mdocdate: June 26 2020 $
+.Dt INITTODR 9
+.Os
+.Sh NAME
+.Nm inittodr
+.Nd initialize system time
+.Sh SYNOPSIS
+.Ft void
+.Fn inittodr "time_t base"
+.Sh DESCRIPTION
+The
+.Fn inittodr
+function determines the time and sets the system clock.
+It tries to pick the correct time using a set of heuristics that examine
+the system's battery-backed clock and the time reported by the file
+system, as given in
+.Fa base .
+Those heuristics include:
+.Bl -bullet
+.It
+If the battery-backed clock has a valid time, it is used.
+.It
+If the battery-backed clock does not have a valid time, and
+the time provided in
+.Fa base
+is within reason,
+.Fa base
+is used as the current time.
+.It
+If the battery-backed clock appears invalid, and
+.Fa base
+appears nonsensical or was not provided (was given as zero),
+an arbitrary base (typically some time in the late 1970s)
+will be used.
+.El
+.Pp
+Once a system time has been determined, it is passed to the
+.Fn tc_setclock
+function.
+.Sh DIAGNOSTICS
+The
+.Fn inittodr
+function prints diagnostic messages if it has trouble figuring
+out the system time.
+Conditions that can cause diagnostic messages to be printed include:
+.Bl -bullet
+.It
+The battery-backed clock's time appears nonsensical.
+.It
+The
+.Fa base
+time appears nonsensical.
+.It
+The
+.Fa base
+time and the battery-backed clock's time differ by a large amount.
+.El
+.Sh SEE ALSO
+.Xr microtime 9 ,
+.Xr resettodr 9
+.Sh BUGS
+Each system's heuristics for picking the correct time are slightly
+different.