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.\"	$OpenBSD: sigsetmask.3,v 1.2 1996/08/19 08:19:42 tholo Exp $
.\"
.Dd March 10, 1991
.Dt SIGSETMASK 3
.Os BSD 4.2
.Sh NAME
.Nm sigsetmask
.Nd set current signal mask
.Sh SYNOPSIS
.Fd #include <signal.h>
.Ft int
.Fn sigsetmask "int mask"
.Fn sigmask signum
.Sh DESCRIPTION
.Bf -symbolic
This interface is made obsoleted 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 sigprocmask 2 ,
.Xr kill 2 ,
.Xr sigaction 2 ,
.Xr sigsuspend 2 ,
.Xr sigvec 3 ,
.Xr sigblock 2 ,
.Xr sigsetops 3
.Sh HISTORY
The
.Fn sigsetmask
function call appeared in
.Bx 4.2
and has been deprecated.