F_SEAL_SEAL
mfd->mfd_seals |= F_SEAL_SEAL;
if (mfd->mfd_seals & F_SEAL_SEAL) {
#define MFD_KNOWN_SEALS (F_SEAL_SEAL|F_SEAL_SHRINK|F_SEAL_GROW \
RL(fcntl(fd, F_ADD_SEALS, F_SEAL_SEAL));
if (except & ~F_SEAL_SEAL) {
rv = fcntl(fd, F_ADD_SEALS, F_SEAL_SEAL);
seal_yet = p_memfd_seal(seal_yet, mfd.mfd_seals, F_SEAL_SEAL, "F_SEAL_SEAL");