SIGSETMASK(2-BSD)   RISC/os Reference Manual    SIGSETMASK(2-BSD)



NAME
     sigsetmask, sigmask - set current signal mask

SYNOPSIS
     #include <signal.h>

     sigsetmask(mask);
     int mask;

     mask = sigmask(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 pro-
     vided to construct the mask for a given signum.

     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)






























                        Printed 11/19/92                   Page 1