usr/src/lib/libc/compat-43/sigsetmask.2

.\" Copyright (c) 1983 Regents of the University of California.
.\" All rights reserved.  The Berkeley software License Agreement
.\" specifies the terms and conditions for redistribution.
.\"
.\"     @(#)sigsetmask.2        6.1 (Berkeley) %G%
.\"
.TH SIGSETMASK 2 ""
.UC 5
.SH NAME
sigsetmask \- set current signal mask
.SH SYNOPSIS
.nf
.B sigsetmask(mask);
.B int mask;
.SH DESCRIPTION
.I Sigsetmask
sets the current signal mask (those signals
which are blocked from delivery).  Signal
.I i
is blocked if the
.IR i -th
bit in
.I mask
is a 1.
.PP
The system
quietly disallows SIGKILL, SIGSTOP, or SIGCONT to
be blocked.
.SH "RETURN VALUE
The previous set of masked signals is returned.
.SH "SEE ALSO"
kill(2), sigvec(2), sigblock(2), sigpause(2)