39 sm_signal(sig, handler)  in sm_signal()  argument
40 	int sig;  in sm_signal()
61 	if (sigaction(sig, &n, &o) < 0)
73 	return signal(sig, handler);
75 	return sigset(sig, handler);
86 	if (sigaction(sig, &n, &o) < 0)
96 **		sig -- the signal to block.
105 sm_blocksignal(sig)  in sm_blocksignal()  argument
106 	int sig;  in sm_blocksignal()
112 	return (sigblock(sigmask(sig)) & sigmask(sig)) != 0;
117 	handler = sigset(sig, SIG_HOLD);
126 	(void) sigaddset(&sset, sig);
130 		return sigismember(&oset, sig);
138 **		sig -- the signal to release.
147 sm_releasesignal(sig)  in sm_releasesignal()  argument
148 	int sig;  in sm_releasesignal()
151 	return (sigsetmask(sigblock(0) & ~sigmask(sig)) & sigmask(sig)) != 0;
156 	handler = sigset(sig, SIG_HOLD);
157 	if (sigrelse(sig) < 0)
165 	(void) sigaddset(&sset, sig);
169 		return sigismember(&oset, sig);
177 **		sig -- signal to add
188 pend_signal(sig)  in pend_signal()  argument
189 	int sig;  in pend_signal()
205 	switch (sig)
323 **		sig -- signal received
331 sm_signal_noop(sig)  in sm_signal_noop()  argument
332 	int sig;  in sm_signal_noop()
336 	FIX_SYSV_SIGNAL(sig, sm_signal_noop);