Re: Problem with accessing namespace_sem from LSM.

[Christoph Hellwig]

On Thu, Nov 08, 2007 at 07:04:23AM +0900, Tetsuo Handa wrote:
> The reason why I want to access namespace_sem inside security_inode_create() is that
> it doesn't receive "struct vfsmount" parameter.
> If "struct vfsmount" *were* passed to security_inode_create(), 
> I have no need to access namespace_sem.

Same argument as with the AA folks: it does not have any business looking
at the vfsmount.  If you create a file it can and in many setups will
show up in multiple vfsmounts, so making decisions based on the particular
one this creat happens through is wrong and actually dangerous.

-
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/