CAP_KQUEUE_CHANGE
cap_rights_init(&rights, CAP_SEEK, CAP_KQUEUE_CHANGE);
cap_rights_init_one(&rights, CAP_KQUEUE_CHANGE), &epfp);
cap_rights_set_one(&rights, CAP_KQUEUE_CHANGE);
error = fget(td, fd, cap_rights_init_one(&rights, CAP_KQUEUE_CHANGE),
#define CAP_KQUEUE (CAP_KQUEUE_EVENT | CAP_KQUEUE_CHANGE)
RIGHTS_INFO(CAP_KQUEUE_CHANGE),
{ CAP_KQUEUE_CHANGE, "kc" },