Messages in this thread | | | From | Gerd Knorr <> | Subject | Re: removable media revalidation - udev vs. devfs or static /dev | Date | 09 Jan 2004 10:49:03 +0100 |
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Joel Becker <Joel.Becker@oracle.com> writes:
> On Wed, Jan 07, 2004 at 10:57:00AM -0800, Greg KH wrote: > > Hm, that would work, but what about a user program that just polls on > > the device, as the rest of this thread discusses? As removable devices > > are not the "norm" it would seem a bit of overkill to create 16 > > partitions for every block device, if they need them or not. > > Um, adding all 16 partitions for a block device that has 5 > defined is opposite of the intention of udev, no?
It shouldn't be _that_ bad.
removable media devices usually tell you that they are removable media devices (scsi: inquiry data has a bit for that IIRC). If you pass this up to hotplug it can use that to figure whenever it has a hard disk (=> just create the existing partitions) or a removable device (=> create a few more nodes to catch the usual removable media layouts).
I also think you don't need *all* minors for removable media. I havn't seen removable media with extended partitions so far. IIRC zip floppys are using /dev/sda4 and most other ones either /dev/sda1 or /dev/sda directly, so we likely can catch 99% with just three device nodes.
Gerd
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