SIGSETMASK(2)

NAME
sigsetmask - set current signal mask

LIBRARY
libc

SYNOPSIS
#include <signal.h>
int
sigsetmask(int mask);
sigmask(signum);

DESCRIPTION
This interface is made obsolete by: sigprocmask(2).

Sigsetmask() sets the current signal mask. Signals are blocked from delivery 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 or SIGSTOP to be blocked.

RETURN VALUES
The previous set of masked signals is returned.

SEE ALSO
kill(2), sigaction(2), sigblock(2), sigprocmask(2), sigsuspend(2), sigvec(2), sigsetops(3)

HISTORY
The sigsetmask() function call appeared in 4.2BSD and has been deprecated.