Messages in this thread | | | From | Andries.Brouwer@cwi ... | Date | Tue, 7 Jan 2003 19:54:11 +0100 (MET) | Subject | Re: IDs |
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>> The id is not suitable as a user space name. Moreover, >> it is a heuristic only, and user space needs unambiguous names.
> If we had a complete white/black list of devices with/without a unique id, > there would be no ambiguity.
You mean for the devices on the white list. But most devices will not be on the white list.
Our perceptions differ, I think. My impression is that chaos is the norm, and well-behaved devices are the exception. I find very good behaviour in fixed hard disks. Stuff by Maxtor, Seagate, IBM, etc - a very small collection of very experienced manufacturers with high quality products. SCSI CDROM drives or tape drives or scanners are messier. USB storage devices are much messier - very basic parts of the protocol are regularly broken. So to me the approach of an id together with a blacklist seems unworkable.
As you say - we can make a best effort and get a string that with some luck identifies the device uniquely. But no guarantees given.
Maybe that again means that the S/Z distinction can be dropped.
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