1.\" $NetBSD: itimerfix.9,v 1.8 2017/07/03 21:28:48 wiz Exp $ 2.\" 3.\" Copyright (c) 2001 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Christos Zoulas. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd November 23, 2001 31.Dt ITIMERFIX 9 32.Os 33.Sh NAME 34.Nm itimerfix 35.Nd check that a timeval value is valid, and correct 36.Sh SYNOPSIS 37.In sys/time.h 38.Ft int 39.Fn itimerfix "struct timeval *tv" 40.Sh DESCRIPTION 41The 42.Nm 43function checks that the value in 44.Fa tv 45is valid (0 \*[Le] tv->tv_sec && 0 \*[Le] tv->tv_usec < 1000000), and that the 46total time represented is at least one 47.Em tick , 48or zero. 49.Pp 50If the total represented time is nonzero and smaller than tick, 51it is adjusted to exactly one tick. 52.Sh RETURN VALUES 53.Nm 54returns 0 on success or 55.Er EINVAL 56if 57.Fa tv 58is invalid. 59.Sh SEE ALSO 60.Xr nanosleep 2 , 61.Xr poll 2 , 62.Xr select 2 , 63.Xr setitimer 2 64