Owner/group or permissions for directories

[Melvyn Sopacua]

Hello,

is there a way to have parent directories of files be created with same
owner or permissions as the files?

In addition:
@mode a+w
...
@mode

behaves unexpected. chmod a+w doesn't clear r and x, yet mode in
pkg-plist does so I end up with files that have -w--w--w-. And of course
their parents still have 755 with root/wheel.

I prefer not to resort to @exec or post install scripts but I don't see
I have a choice here.

--
Melvyn