83 static struct sigtable {  struct
86 } sigtable[NSIG + 1];  variable
139 	sigtable[sig].s_flag |= SSET;  in sigset()
140 	sigtable[sig].s_func = func;  in sigset()
147 		if ((sigtable[sig].s_flag & SHELD) == 0)  in sigset()
158 		sigtable[sig].s_flag &= ~SDEFER;  in sigset()
180 	if (sigtable[sig].s_flag & SHELD)  in sighold()
187 		sigtable[sig].s_flag |= SSET;  in sighold()
190 	sigtable[sig].s_flag |= SHELD;  in sighold()
208 	if ((sigtable[sig].s_flag & SHELD) == 0)  in sigrelse()
210 	sigtable[sig].s_flag &= ~SHELD;  in sigrelse()
211 	if (sigtable[sig].s_flag & SDEFER)  in sigrelse()
217 	if (sigtable[sig].s_func == SIG_DFL)  in sigrelse()
245 	sigtable[sig].s_flag |= SHELD|SPAUSE;  in sigpause()
248 	sigtable[sig].s_flag &= ~SPAUSE;  in sigpause()
249 	sigtable[sig].s_flag |= SDEFER;  in sigpause()
263 		if (sigtable[i].s_flag & SHELD)  in sigchild()
286 	if ((sigtable[sig].s_flag & SSET) == 0) {  in sigdisp()
288 		sigtable[sig].s_func = old;  in sigdisp()
289 		sigtable[sig].s_flag |= SSET;  in sigdisp()
298 	return(sigtable[sig].s_func);  in sigdisp()
320 	if (sigtable[sig].s_flag & SPAUSE)  in _Sigtramp()
327 	if (sigtable[sig].s_flag & SHELD) {  in _Sigtramp()
328 		sigtable[sig].s_flag |= SDEFER;  in _Sigtramp()
337 	if (sigtable[sig].s_func == SIG_IGN)  in _Sigtramp()
344 	if (sigtable[sig].s_func == SIG_DFL) {  in _Sigtramp()
359 	sigtable[sig].s_flag &= ~SDEFER;  in _Sigtramp()
360 	sigtable[sig].s_flag |= SHELD;  in _Sigtramp()
362 	(*sigtable[sig].s_func)(sig);  in _Sigtramp()
367 	sigtable[sig].s_flag &= ~SHELD;  in _Sigtramp()
368 	if (sigtable[sig].s_flag & SDEFER)  in _Sigtramp()