4.3BSD-UWisc/man/cat2/sigsetmask.2

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SIGSETMASK(2)       UNIX Programmer's Manual        SIGSETMASK(2)



NAME
     sigsetmask - set current signal mask

SYNOPSIS
     #include <signal.h>

     sigsetmask(mask);
     int mask;

     mask = sigmask(signum)

DESCRIPTION
     _S_i_g_s_e_t_m_a_s_k sets the current signal mask (those signals that
     are blocked from delivery).  Signals are blocked if the
     corresponding bit in _m_a_s_k is a 1; the macro _s_i_g_m_a_s_k is pro-
     vided to construct the mask for a given _s_i_g_n_u_m.

     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 12/27/86          May 14, 1986                          1