SIGBLOCK(2) SIGBLOCK(2)
NAME
sigblock - block signals
SYNOPSIS
sigblock(mask);
int mask;
DESCRIPTION
Sigblock causes the signals specified in mask to be added to the set of
signals currently being blocked from delivery. Signal i is blocked if
the i-th bit in mask is a 1.
It is not possible to block SIGKILL, SIGSTOP, or SIGCONT; this
restriction is silently imposed by the system.
RETURN VALUE
The previous set of masked signals is returned.
SEE ALSO
kill(2), sigvec(2), sigsetmask(2),
4th Berkeley Distribution 15 June 1983 SIGBLOCK(2)
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