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) 05/15/85

 SIGSETMASK 2 ""
C 5 
 NAME
sigsetmask - set current signal mask

 SYNOPSIS
 sigsetmask(mask);  int mask; 
 DESCRIPTION
 Sigsetmask sets the current signal mask (those signals
which are blocked from delivery). Signal
 i is blocked if the
 i -th bit in 
 mask is a 1.


The system
quietly disallows SIGKILL, SIGSTOP, or SIGCONT to
be blocked.

 "RETURN VALUE
The previous set of masked signals is returned.

 "SEE ALSO"
kill(2), sigvec(2), sigblock(2), sigpause(2)