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Dear Takashi,

On Sat, Jan 21, 2006 at 12:24:25AM +0900, YAMAMOTO Takashi wrote:
> bounds_check_with_mediasize is used for raw partition.
> yes, their behaviours are inconsistent.

it doesn't matter if i use the raw partition or not really. :-/ they both 
are acting this way.

> > Any ideas? Should the KASSERT() in nestiobuf_iodone() be modified or should 
> > it detect this truncation of its transfer and flag an error?
> 
> the KASSERT is "correct" as nestiobuf doesn't work if i/o is truncated.
> to handle the condition, something similar to what kern_physio.c does
> is necessary.
> normally it isn't a problem because filesystems never try to read
> beyond the end of media.  does udf really need to do it?

No, it offcource it doesn't need that :) It's just that if someone tried to 
mount a truncated FS (not uncommon in cd/dvd land) or somehow corrupted FS 
that it wouldn't help to get a panic. I think it would thus be better to 
raise an error in nestiobuf_iodone() in that case.

idea?
Reinoud


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