Messages in this thread | | | Date | Tue, 13 Feb 2001 23:47:50 -0600 (CST) | From | Michael E Brown <> | Subject | Re: block ioctl to read/write last sector |
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On Wed, 14 Feb 2001, Manfred Spraul wrote:
> I have one additional user space only idea: > have you tried raw-io? bind a raw device to the partition, IIRC raw-io > is always in 512 byte units.
That has been tried. No, it does not work. :-) Using Scsi-Generic is the only way so far found, but of course, it only works on SCSI drives.
> > Probably an ioctl is the better idea, but I'd use absolute sector > numbers (not relative to the end), and obviously 64-bit sector numbers - > 2 TB isn't that far away. >
I was deliberately trying to limit the scope to avoid misuse. This is to work around a flaw in the current API, not to create a new API. Limiting access to only those blocks that would normally be inaccessible through the normal API seemed like the best bet to me.
-- Michael Brown
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