97 		int signo;  in sigstring_to_signum()  local
99 		signo = atoi(sig);  in sigstring_to_signum()
100 		return ((signo >= 0 && signo < NSIG) ? signo : (-1));  in sigstring_to_signum()
152 	int signo;  in trapcmd()  local
166 		for (signo = 0 ; signo < sys_nsig ; signo++) {  in trapcmd()
167 			if (signo < NSIG && trap[signo] != NULL) {  in trapcmd()
169 				out1qstr(trap[signo]);  in trapcmd()
170 				if (signo == 0) {  in trapcmd()
172 				} else if (sys_signame[signo]) {  in trapcmd()
173 					out1fmt(" %s\n", sys_signame[signo]);  in trapcmd()
175 					out1fmt(" %d\n", signo);  in trapcmd()
191 		if ((signo = sigstring_to_signum(*argv)) == -1) {  in trapcmd()
199 		if (trap[signo])  in trapcmd()
200 			ckfree(trap[signo]);  in trapcmd()
201 		trap[signo] = action;  in trapcmd()
202 		if (signo != 0)  in trapcmd()
203 			setsignal(signo);  in trapcmd()
251 setsignal(int signo)  in setsignal()  argument
258 	if ((t = trap[signo]) == NULL)  in setsignal()
265 		switch (signo) {  in setsignal()
290 	t = &sigmode[signo];  in setsignal()
295 		if (!getsigaction(signo, &sigact)) {  in setsignal()
304 			if (mflag && (signo == SIGTSTP ||  in setsignal()
305 			     signo == SIGTTIN || signo == SIGTTOU)) {  in setsignal()
324 	sigaction(signo, &sa, NULL);  in setsignal()
332 getsigaction(int signo, sig_t *sigact)  in getsigaction()  argument
336 	if (sigaction(signo, (struct sigaction *)0, &sa) == -1)  in getsigaction()
347 ignoresig(int signo)  in ignoresig()  argument
350 	if (sigmode[signo] == 0)  in ignoresig()
351 		setsignal(signo);  in ignoresig()
352 	if (sigmode[signo] != S_IGN && sigmode[signo] != S_HARD_IGN) {  in ignoresig()
353 		signal(signo, SIG_IGN);  in ignoresig()
354 		sigmode[signo] = S_IGN;  in ignoresig()
371 onsig(int signo)  in onsig()  argument
374 	if (signo == SIGINT && trap[SIGINT] == NULL) {  in onsig()
383 	if (signo == SIGINT || signo == SIGQUIT)  in onsig()
384 		pendingsig_waitcmd = signo;  in onsig()
386 	if (trap[signo] != NULL && trap[signo][0] != '\0' &&  in onsig()
387 	    (signo != SIGCHLD || !ignore_sigchld)) {  in onsig()
388 		gotsig[signo] = 1;  in onsig()
389 		pendingsig = signo;  in onsig()
390 		pendingsig_waitcmd = signo;  in onsig()