Bruce Momjian <pgman@candle.pha.pa.us> writes:
> The problem is when to retokenize pg_hba.conf after a new pg_group is
> made. Seems I can either force administrators to 'pg_ctl reload' to
> update for group changes, or automatically retokenize pg_hba.conf every
> time I update pg_group.
Why exactly are you looking to reinvent the wheel, rather than doing
it the same way we currently handle pg_shadow updates? Send the
postmaster a signal when you modify the flat file, and it can reread
the file on receipt of the signal. See SendPostmasterSignal().
regards, tom lane