They implement a space efficent write-once database with fast access
path. Switch the services(5) database to use cdb. The size of the
database file decreases from 2.1MB disk space to 307KB. Access
performance is about the same if setservent(0) is used and about an
order of magnitude faster otherwise. services_mkdb defaults to the new
format, but can optionally create the old db(3) format as well for
statically linked legacy applications.
foo 11/tcp
bar 11/tcp
are equivalent to:
foo 11/tcp bar
This way we can use the IANA services file properly *and* be able to augment
it with our entries without needing to intersperse our fixes.
joerg