1.\" $NetBSD: sigrelse.3,v 1.2 2003/04/16 13:34:39 wiz Exp $ 2.\" 3.\" Copyright (c) 2003 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Klaus Klein. 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.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd January 16, 2003 38.Dt SIGRELSE 3 39.Os 40.Sh NAME 41.Nm sigrelse 42.Nd manipulate current signal mask 43.Sh LIBRARY 44.Lb libc 45.Sh SYNOPSIS 46.In signal.h 47.Ft int 48.Fn sigrelse "int sig" 49.Sh DESCRIPTION 50.Bf -symbolic 51This interface is made obsolete by 52.Xr sigprocmask 2 . 53.Ef 54.Pp 55The 56.Fn sigrelse 57function removes the signal 58.Fa sig 59from the calling process' signal mask. 60.Sh RETURN VALUES 61If successful, the 62.Fn sigrelse 63function returns 0. 64Otherwise \-1 is returned and 65.Va errno 66is set to indicate the error. 67.Sh ERRORS 68The 69.Fn sigrelse 70function will fail if: 71.Bl -tag -width Er 72.It Bq Er EINVAL 73The argument 74.Fa sig 75is not a valid signal number. 76.El 77.Sh SEE ALSO 78.Xr sigprocmask 2 , 79.Xr sighold 3 80.Sh STANDARDS 81The 82.Fn sigrelse 83function conforms to 84.St -p1003.1-2001 . 85