2003-04-16 17:34:34 +04:00
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.\" $NetBSD: itimerfix.9,v 1.5 2003/04/16 13:35:29 wiz Exp $
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2001-12-02 05:26:26 +03:00
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.\"
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.\" Copyright (c) 2001 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Christos Zoulas.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd November 23, 2001
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.Dt ITIMERFIX 9
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.Os
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.Sh NAME
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.Nm itimerfix
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.Nd check that a timeval value is valid, and correct
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.Sh SYNOPSIS
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.In sys/time.h
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.Ft int
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.Fn itimerfix "struct timeval *tv"
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.Sh DESCRIPTION
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The
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.Nm
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function checks that the value in
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.Fa tv
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2002-02-13 11:17:26 +03:00
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is valid (0 \*[Le] tv-\*[Gt]tv_sec \*[Am]\*[Am] 0 \*[Le] tv-\*[Gt]tv_usec \*[Lt] 1000000), and that the
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2003-02-01 13:43:20 +03:00
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total time represented is at least one
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.Em tick ,
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or zero.
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.Pp
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If the total represented time is nonzero and smaller than tick,
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it is adjusted to exacly one tick.
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.Sh RETURN VALUES
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.Nm
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returns 0 on success or
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.Er EINVAL
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if
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.Fa tv
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is invalid.
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.Sh SEE ALSO
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.Xr nanosleep 2 ,
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.Xr poll 2 ,
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.Xr select 2 ,
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.Xr setitimer 2
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