<parameter>type</parameter>. However, as a special exception, if
the offset is specified as zero and the size specified as
UINT64_MAX the full memory file descriptor contents is used. The
- memory file descriptor is sealed by this call if it hasn't been
+ memory file descriptor is sealed by this call if it has not been
sealed yet, and cannot be modified after this call. See
<citerefentry
project='man-pages'><refentrytitle>memfd_create</refentrytitle><manvolnum>2</manvolnum></citerefentry>