val char_of_perm : perm -> charval perm_of_char : char -> perm optiontype t = {owner : domid; | domain which "owns", has full access |
other : perm; | default permissions for all others... |
acl : (domid * perm) list; | ... unless overridden in the ACL |
}val of_string : string -> t optionval to_string : t -> string