1170 sigiofree(struct sigio *sigio)  in sigiofree()  argument
1172 	crfree(sigio->sio_ucred);  in sigiofree()
1173 	free(sigio, M_SIGIO);  in sigiofree()
1176 static struct sigio *
1177 funsetown_locked(struct sigio *sigio)  in funsetown_locked()  argument
1184 	if (sigio == NULL)  in funsetown_locked()
1186 	*sigio->sio_myref = NULL;  in funsetown_locked()
1187 	if (sigio->sio_pgid < 0) {  in funsetown_locked()
1188 		pg = sigio->sio_pgrp;  in funsetown_locked()
1190 		SLIST_REMOVE(&pg->pg_sigiolst, sigio, sigio, sio_pgsigio);  in funsetown_locked()
1193 		p = sigio->sio_proc;  in funsetown_locked()
1195 		SLIST_REMOVE(&p->p_sigiolst, sigio, sigio, sio_pgsigio);  in funsetown_locked()
1198 	return (sigio);  in funsetown_locked()
1207 funsetown(struct sigio **sigiop)  in funsetown()
1209 	struct sigio *sigio;  in funsetown()  local
1216 	sigio = funsetown_locked(*sigiop);  in funsetown()
1218 	if (sigio != NULL)  in funsetown()
1219 		sigiofree(sigio);  in funsetown()
1233 	struct sigio *sigio, *tmp;  in funsetownlst()  local
1236 	sigio = SLIST_FIRST(sigiolst);  in funsetownlst()
1237 	if (sigio == NULL)  in funsetownlst()
1244 	sigio = SLIST_FIRST(sigiolst);  in funsetownlst()
1245 	if (sigio == NULL) {  in funsetownlst()
1253 	if (sigio->sio_pgid < 0) {  in funsetownlst()
1254 		pg = sigio->sio_pgrp;  in funsetownlst()
1258 		p = sigio->sio_proc;  in funsetownlst()
1264 	SLIST_FOREACH(sigio, sigiolst, sio_pgsigio) {  in funsetownlst()
1265 		*sigio->sio_myref = NULL;  in funsetownlst()
1267 			KASSERT(sigio->sio_pgid < 0,  in funsetownlst()
1269 			KASSERT(sigio->sio_pgrp == pg,  in funsetownlst()
1272 			KASSERT(sigio->sio_pgid > 0,  in funsetownlst()
1274 			KASSERT(sigio->sio_proc == p,  in funsetownlst()
1285 	SLIST_FOREACH_SAFE(sigio, sigiolst, sio_pgsigio, tmp)  in funsetownlst()
1286 		sigiofree(sigio);  in funsetownlst()
1296 fsetown(pid_t pgid, struct sigio **sigiop)  in fsetown()
1300 	struct sigio *osigio, *sigio;  in fsetown()  local
1308 	sigio = malloc(sizeof(struct sigio), M_SIGIO, M_WAITOK);  in fsetown()
1309 	sigio->sio_pgid = pgid;  in fsetown()
1310 	sigio->sio_ucred = crhold(curthread->td_ucred);  in fsetown()
1311 	sigio->sio_myref = sigiop;  in fsetown()
1335 				sigio->sio_proc = proc;  in fsetown()
1336 				SLIST_INSERT_HEAD(&proc->p_sigiolst, sigio,  in fsetown()
1360 				sigio->sio_pgrp = pgrp;  in fsetown()
1361 				SLIST_INSERT_HEAD(&pgrp->pg_sigiolst, sigio,  in fsetown()
1369 		*sigiop = sigio;  in fsetown()
1380 fgetown(struct sigio **sigiop)  in fgetown()