1.\" $OpenBSD: pause.3,v 1.8 2000/12/24 00:30:50 aaron Exp $ 2.\" 3.\" Copyright (c) 1980, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.Dd June 4, 1993 35.Dt PAUSE 3 36.Os 37.Sh NAME 38.Nm pause 39.Nd stop until signal 40.Sh SYNOPSIS 41.Fd #include <unistd.h> 42.Ft int 43.Fn pause void 44.Sh DESCRIPTION 45.Bf -symbolic 46Pause is made obsolete by 47.Xr sigsuspend 2 . 48.Ef 49.Pp 50The 51.Fn pause 52function forces a process to pause until a signal is received from either the 53.Xr kill 2 54function or an interval timer 55(see 56.Xr setitimer 2 ) . 57.Pp 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 may set the global variable 69.Va errno 70to the following error: 71.Bl -tag -width Er 72.It Bq Er EINTR 73The call was interrupted. 74.El 75.Sh SEE ALSO 76.Xr kill 2 , 77.Xr select 2 , 78.Xr setitimer 2 , 79.Xr sigsuspend 2 80.Sh HISTORY 81A 82.Fn pause 83syscall appeared in 84.At v6 . 85