What I have (and the inverse): receive a possible unix username put unix username into database if ...

What I have (and the inverse):

    receive a possible unix username
    put unix username into database if valid
    return username.is_valid && db.is_successful ? 1 : 0

What I need (and the inverse):

    receive a possible unix username
    put unix username into database if username.is_valid
    for ( list of directories shared to user's boss ) :
         set acl on directory for username 
    return username.is_valid && db.is_successful ? 1 : 0

But, I want to trigger the acl setting after the return, because the database call is fast enough for a user to wait, but the recursive crawl over a file system, setting an acl on every single file or dir, is too much of a thing to expect users to wait for.

Suggestions?

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