Re: [patch] kernel sysfs events layer

[Robert Love]

On Wed, 2004-09-15 at 13:31 -0700, Tim Hockin wrote:

> > A mount event should really just cause a rescan of the mount table.
> 
> In which namespace?  All of them?  Is that an information leak that might
> be hazardous (I'm bad with security stuff).

You can only see your own namespace.  So e.g. /proc/mtab is your name
space's mount table and you can rescan that when receiving the mount
signal.

That is sort of the coolness of this approach - push the payload out to
user-space, and we don't have to worry about things like information
leak, name spaces, security, etc.  We are just providing a notify
mechanism for state information that should already be exposed through
sysfs.

So there is no information leak.

	Robert Love


-
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/