SIGSETMASK(2) System Calls Manual SIGSETMASK(2)
NAME
sigsetmask - set current signal mask
SYNOPSIS
#include <signal.h>
omask = sigsetmask(mask);
long omask, mask;
mask = sigmask(signum)
long mask;
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.
RETURN VALUE
The previous set of masked signals is returned.
SEE ALSO
kill(2), sigvec(2), sigblock(2), sigpause(2)
4.2 Berkeley Distribution May 14, 1986 SIGSETMASK(2)
