1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)pause.3 8.1 (Berkeley) 6/4/93 29.\" $FreeBSD: src/lib/libc/gen/pause.3,v 1.3.2.5 2001/12/14 18:33:51 ru Exp $ 30.\" $DragonFly: src/lib/libc/gen/pause.3,v 1.2 2003/06/17 04:26:42 dillon Exp $ 31.\" 32.Dd June 4, 1993 33.Dt PAUSE 3 34.Os 35.Sh NAME 36.Nm pause 37.Nd stop until signal 38.Sh LIBRARY 39.Lb libc 40.Sh SYNOPSIS 41.In unistd.h 42.Ft int 43.Fn pause void 44.Sh DESCRIPTION 45.Sy Pause is made obsolete by 46.Xr sigsuspend 2 . 47.Pp 48The 49.Fn pause 50function 51forces a process to pause until 52a signal is received from either the 53.Xr kill 2 54function 55or an interval timer. 56(See 57.Xr setitimer 2 . ) 58Upon termination of a signal handler started during a 59.Fn pause , 60the 61.Fn pause 62call will return. 63.Sh RETURN VALUES 64Always returns \-1. 65.Sh ERRORS 66The 67.Fn pause 68function 69always returns: 70.Bl -tag -width Er 71.It Bq Er EINTR 72The call was interrupted. 73.El 74.Sh SEE ALSO 75.Xr kill 2 , 76.Xr select 2 , 77.Xr sigsuspend 2 78.Sh HISTORY 79A 80.Fn pause 81syscall 82appeared in 83.At v6 . 84