NAME

sigsetmask − 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 provided 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)

NEWS-OSRelease 3.3