Mailinglist Archive: opensuse-factory (1264 mails)

[Greg Freemyer <greg.freemyer@xxxxxxxxx>]

On Wed, Sep 14, 2011 at 1:33 PM, Greg KH <gregkh@xxxxxxx> wrote:
> On Wed, Sep 14, 2011 at 05:40:01PM +0200, Anders Johansson wrote:
> > On Wednesday 14 September 2011 10:53:42 Greg KH wrote:
> > > If you want to determine if this really is a USB device or not, then you
> > > need to look elsewhere in the system, not in /dev.
> >
> > Out of interest, what is the correct way to determine if a particular device
> > is removable, with hal gone? Is it the DeviceIsRemovable property in
> > DeviceKit/udisk?
>
> Yes, I think it is.

Are you avoiding /sys for some reason?

If not, I vote for it being "cat /sys/block/sda/removable".

And since /sys is part of the Linux ABI it should be a stable interface.

The bigger question is if the data found there is reliable.  I don't
know.  I do know some of the sysfs fields associated with the disks
are not reliable (but the existence of the files are stable!).

Greg
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