sigsetmask - set current signal mask
Standard C Library (libc, -lc)
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.
The previous set of masked signals is returned.
kill(2), sigaction(2), sigprocmask(2), sigsuspend(2), sigblock(3),
The sigsetmask() function call appeared in 4.2BSD and has been deprecated.
BSD June 2, 1993 BSD
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