Subject: Re: Work-in-progress "wedges" implementation
To: Daniel Carosone <dan@geek.com.au>
From: Jason Thorpe <thorpej@shagadelic.org>
List: tech-kern
Date: 09/30/2004 20:58:06
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On Sep 30, 2004, at 5:33 PM, Daniel Carosone wrote:
> Sure, if I give (say) a user access to that particular partition, for
> usermounted filesystems, they can then rewrite my disklabel as well.
Right now, bounds_check_with_label() (a machine-dependent function)
ensures that writes to the "label area" are disallowed unless the disk
is in "writing a new label" state.
How that should be done in a generic way with wedges is really an open
question. Perhaps the label discovery module should register a list of
"protected" extents. But I don't think creating special wedges is the
right solution, that can be written only by writing to the parent
disk's RAW_PART.
-- Jason R. Thorpe <thorpej@shagadelic.org>
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