CAP_GETSOCKOPT
CAP_RIGHTS_INITIALIZER(CAP_GETSOCKOPT);
(CAP_CONNECT | CAP_GETPEERNAME | CAP_GETSOCKNAME | CAP_GETSOCKOPT | \
CAP_GETSOCKOPT | CAP_LISTEN | CAP_PEELOFF | CAP_RECV | CAP_SEND | \
RIGHTS_INFO(CAP_GETSOCKOPT),
cap_rights_init(&(fcntl_rights[8]), CAP_GETSOCKOPT);
TRY(CAP_GETSOCKOPT);
{ CAP_GETSOCKOPT, "gs" },
CAP_SEND, CAP_GETSOCKOPT);