48 static void sigsegv(int sig, siginfo_t *sip, ucontext_t *uap);
174 done(sig)  in done()  argument
202 	if (sig) {  in done()
209 		if (sig == SIGHUP)  in done()
213 		sigaddset(&set, sig);  in done()
215 		handle(sig, SIG_DFL);  in done()
216 		kill(mypid, sig);  in done()
222 fault(int sig)  in fault()  argument
226 	switch (sig) {  in fault()
233 	if (trapcom[sig])  in fault()
236 		done(sig);  in fault()
241 	trapflg[sig] |= flag;  in fault()
245 handle(sig, func)  in handle()  argument
246 	int sig;  in handle()
252 	if (func == SIG_IGN && (trapflg[sig] & SIGIGN))
261 	if (sig > MINTRAP && sig < MAXTRAP) {
263 		act.sa_flags = (sig == SIGSEGV) ? (SA_ONSTACK | SA_SIGINFO) : 0;
265 		sigaction(sig, &act, &oact);
269 		trapflg[sig] |= SIGIGN;
277 	if (sig == 0) {
367 	int sig;  in systrap()  local
375 		for (sig = 0; sig < MAXTRAP; sig++) {  in systrap()
376 			if (trapcom[sig]) {  in systrap()
377 				prn_buff(sig);  in systrap()
379 				prs_buff(trapcom[sig]);  in systrap()
390 		noa1 = (str2sig(a1, &sig) == 0);  in systrap()
394 			if (str2sig(*argv, &sig) < 0 ||  in systrap()
395 			    sig >= MAXTRAP || sig < MINTRAP ||  in systrap()
396 			    sig == SIGSEGV) {  in systrap()
404 				clrsig(sig);  in systrap()
411 				if (trapflg[sig] & SIGMOD || sig == 0 ||  in systrap()
412 				    !ignoring(sig)) {  in systrap()
413 					handle(sig, fault);  in systrap()
414 					trapflg[sig] |= SIGMOD;  in systrap()
415 					replace(&trapcom[sig], a1);  in systrap()
417 			} else if (handle(sig, SIG_IGN)) {  in systrap()
423 				trapflg[sig] |= SIGMOD;  in systrap()
424 				replace(&trapcom[sig], a1);  in systrap()
474 sigsegv(int sig, siginfo_t *sip, ucontext_t *uap)  in sigsegv()  argument
495 			fault(sig);  in sigsegv()