pgfind
pgrp = pgfind(-pgid);
pg = pgfind(-uap->pid);
pgrp = pgfind(pgid);
if (p->p_pgid == p->p_pid || (pg = pgfind(p->p_pid)) != NULL) {
if ((pgrp = pgfind(pgid)) == NULL ||
} else if ((pg = pgfind(who)) == NULL) {
} else if ((pg = pgfind(who)) == NULL) {
} else if ((pg = pgfind(who)) == NULL) {
} else if ((pg = pgfind(who)) == NULL) {
pgrp = pgfind(pgid);
if (pgid && (pgrp = pgfind(pgid)))
struct pgrp *pgrp = pgfind(pgid);
struct pgrp *pgfind (pid_t); /* Find process group by id w/ref */