Re: [PATCH] fs/vfs/security: pass last path component to LSM oninode creation

From: Al Viro
Date: Fri Jul 08 2011 - 12:18:06 EST


On Wed, Dec 08, 2010 at 02:45:27PM -0500, Eric Paris wrote:
> SELinux would like to implement a new labeling behavior of newly created
> inodes. We currently label new inodes based on the parent and the creating
> process. This new behavior would also take into account the name of the
> new object when deciding the new label. This is not the (supposed) full path,
> just the last component of the path.
>
> This is very useful because creating /etc/shadow is different than creating
> /etc/passwd but the kernel hooks are unable to differentiate these
> operations. We currently require that userspace realize it is doing some
> difficult operation like that and than userspace jumps through SELinux hoops
> to get things set up correctly. This patch does not implement new
> behavior, that is obviously contained in a seperate SELinux patch, but it
> does pass the needed name down to the correct LSM hook. If no such name
> exists it is fine to pass NULL.

-ETOOFUCKINGUGLY...
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