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

.\" Copyright (c) 1983 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" %sccs.include.redist.man%
.\"
.\"     @(#)sigsetmask.2        6.6 (Berkeley) %G%
.\"
.TH SIGSETMASK 2 ""
.UC 5
.SH NAME
sigsetmask \- set current signal mask
.SH SYNOPSIS
.nf
.B #include <signal.h>

.B sigsetmask(mask);
.B int mask;

.B mask = sigmask(signum)
.SH DESCRIPTION
.B "This interface is made obsolete by sigprocmask(2).
.LP
.I Sigsetmask
sets the current signal mask (those signals
that are blocked from delivery).
Signals are blocked if the
corresponding bit in
.I mask
is a 1; the macro
.I sigmask
is provided to construct the mask for a given
.IR signum .
.PP
The system
quietly disallows SIGKILL or SIGSTOP to be blocked.
.SH "RETURN VALUE
The previous set of masked signals is returned.
.SH "SEE ALSO"
sigprocmask(2), kill(2), sigaction(2), sigsuspend(2),
sigvec(2), sigblock(2), sigsetops(3)