RFPPWAIT
error = fork1(lp, RFFDG | RFPROC | RFPPWAIT | RFMEM | RFPGLOCK, &p2);
if (flags & RFPPWAIT) {
} else if (flags == (RFFDG | RFPROC | RFPPWAIT | RFMEM | RFPGLOCK)) {
#define RFKERNELONLY (RFPGLOCK | RFPPWAIT)