.\" Copyright (c) 1983, 1991 The Regents of the University of California.
.\" %sccs.include.redist.man%
.\" @(#)sigblock.2 6.8 (Berkeley) %G%
This interface is made obsolete by:
adds the signals specified in
to the set of signals currently
being blocked from delivery.
Signals are blocked if the
is provided to construct the mask for a given
It is not possible to block
this restriction is silently
The previous set of masked signals is returned.
function call appeared in