Re: [PATCH] sysfs: add filter function to groups

James Bottomley
2007-10-29T17:29:44Z

On Mon, 2007-10-29 at 13:27 -0400, Jeff Garzik wrote:
> James Bottomley wrote:
> > visibility and creation are the same thing, aren't they? An invisible
> > attribute doesn't appear in the sysfs directory, so it's equivalent to
> > the file for it not being created.
>
>
> What about the case where it's visible at creation time, but then needs
> to be made selectively invisible later on?
>
> That implies either a remove operation or dentry checks on each lookup?

Yes, that comes with the bitmap manipulation code. There will be a way
to add and remove runtime visibility. I just wanted to get the basic
concept agreed to first.

James