Simon Burge writes:
> Would using dup2(2) be a way to hack around this?

I don't think so, if I understand the issue correctly.  The man page
seems to be hinting that the /dev/cd0d's reference count must drop
down to zero before the driver lets the new disc's data appear to the
user.

I can try playing with it once my current batch of 268 tracks finishes
mp3 encoding.  (grip doesn't checkpoint its data so I can't interrupt
it right now.)

BTW. patches for grip are at:
     http://www.wsrcc.com/wolfgang/ftp/grip-netbsd.patch
     (contains a rude hack of frobbing the parent's private fd).
grip is at:
     http://www.nostatic.org/grip

-wolfgang
-- 
Wolfgang Rupprecht    <wolfgang@wsrcc.com>     http://www.wsrcc.com/wolfgang/
Coming soon: GPS mapping tools for Open Systems. http://www.gnomad-mapping.com/