sigsetmask(2)                                       sigsetmask(2)



NAME
     sigsetmask - set current signal mask

SYNOPSIS
     #include <signal.h>

     int sigsetmask(mask);
     int mask;

     sigmask(signum)
     int signum;

DESCRIPTION
     sigsetmask sets the current signal mask (those signals that
     are 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.

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

STATUS MESSAGES AND VALUES
     The previous set of masked signals is returned.

SEE ALSO
     kill(2), sigvec(2), sigblock(2), sigpause(2), signal(3)





























January 1992                                                    1