John,
YAFFS Direct is the 'kernel' or heart of YAFFS.  http://www.yaffs.net
has a lot of documentation including the YAFFS Direct User Guide as .pdf

I suggest you take a look at the range there is there.

LvS

On Wed, 2009-12-02 at 08:14 -0500, McCash John-GKJN37 wrote:
> Charles,
> 	That sounds interesting, but I have no idea what you mean by
> "yaffs direct" or nand-on-file emulation. (though I'm looking through
> Google now, and I do see some references to "yaffs direct") Can you
> provide a link to documentation for mounting using this technique?
> 		Thanks
> 			John
> 
> -----Original Message-----
> From: yaffs-bounces@lists.aleph1.co.uk
> [mailto:yaffs-bounces@lists.aleph1.co.uk] On Behalf Of Charles Manning
> Sent: Tuesday, December 01, 2009 3:36 PM
> To: yaffs@lists.aleph1.co.uk
> Subject: Re: [Yaffs] Access to files on a YAFFS2 image
> 
> Another approach is to run this up in yaffs direct using a nand-on-file 
> emulation.
> 
> On Wednesday 02 December 2009 10:26:08 Charles Manning wrote:
> > What I suggest is that you first start off by running yaffs on the
> nandsim
> > then doing a dump from that and checking that looks like it should and
> that
> > you can then nandwrite that back.
> >
> > Once you can make the process work with just one device it is then a
> lot
> > easier to see why things don't work when importing from somewhere
> else.
> >
> > -- Charles
> >
> > On Wednesday 02 December 2009 01:57:04 McCash John-GKJN37 wrote:
> > > Charles,
> > > 	OK, so we apparently do have the OOB data in these image dumps
> > > (obtained via the dump_image-arm tool included in nandroid), but
> when we
> > > attempt to upload them to a nand emulator (under Ubuntu) with
> 'nandwrite
> > > -a -o', we're still getting the error:
> > >
> > > Input file is not page-aligned. Use the padding option.
> > > Data was only partially written due to error
> > >
> > > : Success
> > >
> > > 	Where do we go from here? Should this work, and if so, how do we
> > > determine exactly what the problem really is?
> > >
> > > 		Thanks much for your help
> > > 			John McCash
> > >
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> >
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> 
> 
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Laurie van Someren, Aleph One Ltd, Old Courthouse, Bottisham, CAMBRIDGE
CB25 9BA  UK  t: +44 (0)1 223 811 679  www.aleph1.co.uk & www.yaffs.net