Re: [AppArmor 01/41] Pass struct vfsmount to the inode_create LSM hook

Toshiharu Harada
2007-05-26T23:09:17Z

2007/5/27, James Morris <jmorris@namei.org>:
> On Sat, 26 May 2007, Kyle Moffett wrote:
> > AppArmor). On the other hand, if you actually want to protect the _data_,
> > then tagging the _name_ is flawed; tag the *DATA* instead.
>
> Bingo.
>
> (This is how traditional Unix DAC has always functioned, and is what
> SELinux does: object labeling).

Object labeling (or labeled security) looks simple and straight forward way,
but it's not.

(1) Object labeling has a assumption that labels are always properly
defined and maintained. This can not be easily achieved.
(2) Also, assigning a label is something like inventing and assigning
a *new* name (label name) to objects which can cause flaws.

I'm not saying labeled security or SELinux is wrong. I just wanted to
remind that the important part is the "process" not the "result". :-)

--
Toshiharu Harada
haradats@gmail.com