tree(directory) based quotas in unix

[Jon Schewe <jpschewe@eggplant.mtu.net>]

Anyone heard of anything that will do this?  I'm assuming this is going to be
a functionlity of the filesystem, but anything would be helpful because I may
have to write it if I can't find it.

The only quotas I know of under unix are based on gid or uid.  Under windows
they're based on directory trees.  I want these tree based quotas on a unix
system.  Specifically a netapp box, but if I can get it somewhere else I can
either use this system, perferably Solaris, or base my own code off it.

-- 
Jon Schewe | http://eggplant.mtu.net/~jpschewe
For I am convinced that neither death nor life, neither angels 
nor demons, neither the present nor the future, nor any 
powers, neither height nor depth, nor anything else in all 
creation, will be able to separate us from the love of God that 
is in Christ Jesus our Lord. - Romans 8:38-39