Linux module(s) related to user's permission

[Tom Cao]

Hi all,

Can everyone tell me about kernel module(s) that related to permission
or privilege of user (root, normal users) in Linux.
I want to research about permission module and do some modifications
to the kernel. In fact, I want to limit root's privilege on a specific
file or folder. So, can anybody tell me some documents, books or links
to find such information.
I am looking forward to hearing from you,

-- 
Best regards,
Tom
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/