FWF_ADD_WANTED
FWF_ADD_WANTED, FWF_ADD_ACTIVE) != -1);
FWF_ADD_WANTED, FWF_ADD_ACTIVE) != -1);
FWF_ADD_WANTED, FWF_ADD_ACTIVE) == -1) {
FWF_ADD_WANTED, FWF_ADD_ACTIVE) != -1);
FWF_ADD_WANTED, FWF_ADD_ACTIVE) != -1);
FWF_ADD_WANTED, FWF_ADD_ACTIVE) == -1) {
FWF_ADD_WAIT_MASK, FWF_ADD_WANTED,
FWF_ADD_WANTED, FWF_ADD_ACTIVE) == -1) {
#define FWF_ADD_WAIT_MASK (FWF_ADD_ACTIVE|FWF_DEL_ACTIVE|FWF_ADD_WANTED)
FWF_ADD_WANTED|FWF_DEL_WANTED)