Manual page for SIGBLOCK(2)
sigblock - block signals
SYNOPSIS
#include <signal.h>
sigblock(mask);
int mask;
mask = sigmask(signum)
DESCRIPTION
Sigblock
causes the signals specified in
mask
to be added to the set of signals currently
being blocked from delivery.
Signals are blocked if the
corresponding bit in
mask
is a 1; the macro
sigmask
is provided to construct the mask for a given
signum.
It is not possible to block SIGKILL,
SIGSTOP, or SIGCONT; this restriction is silently
imposed by the system.
RETURN VALUE
The previous set of masked signals is returned.
SEE ALSO
kill(2), sigvec(2), sigsetmask(2)
Created by unroff & hp-tools.
© somebody (See intro for details). All Rights Reserved.
Last modified 11/5/97
