On Tue, Jul 20, 2010 at 05:02:37PM +0200, Milan Broz wrote:
> On 07/20/2010 12:53 PM, Karel Zak wrote:
> >
> > My suggestion is to use /sys as alternative to useless
> > LOOP_GET_STATUS ioctl, something like:
> >
> > /sys/block/<devname>/loop/backing_file
> > /sys/block/<devname>/loop/offset
> > /sys/block/<devname>/loop/sizelimit
> > /sys/block/<devname>/loop/autoclear
> Maybe naive, but quick implementation of this idea...
Cool. Thanks!
> +static LOOP_ATTR_RO(backing_file);
> +static LOOP_ATTR_RO(offset);
> +static LOOP_ATTR_RO(readonly);
> +static LOOP_ATTR_RO(autoclear);
> +
> +static struct attribute *loop_attrs[] = {
> + &loop_attr_backing_file.attr,
> + &loop_attr_offset.attr,
> + &loop_attr_readonly.attr,
> + &loop_attr_autoclear.attr,
> + NULL,
> +};
It would be nice to have accessible loop_device->lo_sizelimit attribute too.
I think the "readonly" attribute is unnecessary, this info is already
exported by /sys/block/loopN/ro.
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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