32 bits mask?

[JongKim]

Given that getMask method on AclEntry class returns an integer,
does that mean that I'm limited to 32 different permissions per entry, or is it somehow extensible?

Thanks

[Ben Alex]

You can write any implementation of AclEntry that you like. Use a Long if you'd prefer. Although you've got 2**32 with an integer, so you have a lot possible combinations already. You are not forced to allocate a specific bit to a specific permission. Every bit mask (comprising all 32 bits) is a separate allowed permission.