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.\"     @(#)sigsetmask.2	8.1 (Berkeley) 6/2/93
.\" $FreeBSD: src/lib/libc/compat-43/sigsetmask.2,v 1.7.2.4 2001/12/14 18:33:49 ru Exp $
.\"
.Dd June 2, 1993
.Dt SIGSETMASK 2
.Os
.Sh NAME
.Nm sigsetmask
.Nd set current signal mask
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In signal.h
.Ft int
.Fn sigsetmask "int mask"
.Fn sigmask signum
.Sh DESCRIPTION
.Bf -symbolic
This interface is made obsolete by:
.Ef
.Xr sigprocmask 2 .
.Pp
.Fn Sigsetmask
sets the current signal mask.  Signals
are blocked from delivery if the
corresponding bit in
.Fa mask
is a 1; the macro
.Fn sigmask
is provided to construct the mask for a given
.Fa signum .
.Pp
The system
quietly disallows
.Dv SIGKILL
or
.Dv SIGSTOP
to be blocked.
.Sh RETURN VALUES
The previous set of masked signals is returned.
.Sh SEE ALSO
.Xr kill 2 ,
.Xr sigaction 2 ,
.Xr sigblock 2 ,
.Xr sigprocmask 2 ,
.Xr sigsuspend 2 ,
.Xr sigvec 2 ,
.Xr sigsetops 3
.Sh HISTORY
The
.Fn sigsetmask
function call appeared in
.Bx 4.2
and has been deprecated.