[OpenBIOS] /packages/disk-label, /packages/sun-parts and /packages/misc-files

[Mark Cave-Ayland]

Mark Cave-Ayland wrote:

> Hi folks,
> 
> Is there some kind of specification for the above packages or are we 
> free to design the interface as we choose? The reason I ask is that the 
> current interposition order doesn't seem to be particularly logical. At 
> the moment, the order goes like this for a CDROM:
> 
> cdrom -> deblocker -> disk-label -> (misc-files or sun-parts or pc-parts)
> 
> But I think it makes more sense to do this:
> 
> cdrom -> deblocker -> disk-label -> (sun-parts or pc-parts) -> misc-files
> 
> The reason for suggesting a change is because by placing misc-files 
> directly after disk-label, all partition offsets have to be bubbled back 
> up the chain using a series of get-info words to the device. If this 
> could be reordered, it should be possible to remove most of this logic 
> and simply pass the read/seeks back up to the parent.
> 
> Otherwise, like at the moment, there is lots of code in misc-files that 
> has to work out whether you are accessing a file or a partition directly 
> and act differently which can't be a good thing.

Anyone have any comment on this? Or can I just go ahead and start 
tidying up and applying patches?


ATB,

Mark.

-- 
Mark Cave-Ayland - Senior Technical Architect
PostgreSQL - PostGIS
Sirius Corporation plc - control through freedom
http://www.siriusit.co.uk
t: +44 870 608 0063

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