1.\" Copyright (c) 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Berkeley Software Design, Inc. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. Neither the name of the University nor the names of its contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.\" @(#)sigpending.2 8.3 (Berkeley) 1/12/94 32.\" $FreeBSD: head/lib/libc/sys/sigpending.2 255296 2013-09-06 09:08:40Z jilles $ 33.\" 34.Dd July 20, 2016 35.Dt SIGPENDING 2 36.Os 37.Sh NAME 38.Nm sigpending 39.Nd get pending signals 40.Sh LIBRARY 41.Lb libc 42.Sh SYNOPSIS 43.In signal.h 44.Ft int 45.Fn sigpending "sigset_t *set" 46.Sh DESCRIPTION 47The 48.Fn sigpending 49system call returns a mask of the signals pending for delivery 50to the calling thread or the calling process in the location indicated by 51.Fa set . 52Signals may be pending because they are currently masked, 53or transiently before delivery (although the latter case is not 54normally detectable). 55.Sh RETURN VALUES 56.Rv -std sigpending 57.Sh ERRORS 58The 59.Fn sigpending 60system call 61will fail if: 62.Bl -tag -width Er 63.It Bq Er EFAULT 64The 65.Fa set 66argument specified an invalid address. 67.El 68.Sh SEE ALSO 69.Xr sigaction 2 , 70.Xr sigprocmask 2 , 71.Xr sigsuspend 2 , 72.Xr sigsetops 3 73.Sh STANDARDS 74The 75.Fn sigpending 76system call is expected to conform to 77.St -p1003.1-90 . 78