[Yaffs] An observation about "useHeaderFileSize" !

[Abhishek Bhattacharya]

Hi

If
if(dev->isYaffs2)
{
dev->useHeaderFileSize =3D 1;
}=0D
is true, in that case, oh->fileSize doesnot get the actual file size.
Thus object's file size remains as 0. While scanning , yaffs2 assigns
the=0D
Size of the file to scannedFileSize. And then the next condition is

	else if(tags.chunkId > 0)
	{
	///code=0D
		if(!dev->useHeaderFileSize)
		{
			in->variant.fileVariant.fileSize =3D =0D
=0D
in->variant.fileVariant.scannedFileSize;
		}
	///code
	}

And last but not the least=0D
"The useHeaderFileSize option is only useful for YAFFS1"
"Defeat this and YAFFS2 will break" ... Could you kindly throw some more
Light on that please? I feel these two statements slightly contradict.

Regards
Abhishek


-----Original Message-----
From: Charles Manning [mailto:manningc2@actrix.gen.nz]=0D
Sent: Friday, February 04, 2005 6:02 AM
To: Abhishek Bhattacharya; yaffs@stoneboat.aleph1.co.uk
Subject: Re: [Yaffs] An observation about "useHeaderFileSize" !

>The useHeaderFileSize option is only useful for YAFFS1.

>YAFFS2 needs to use this otherwise various things break.
>For this reason, yaffs_GutsInitialise forces this on for YAFFS2 in the
the following lines:

>if(dev->isYaffs2)
>{
>dev->useHeaderFileSize =3D 1;
>}

>Defeat this and YAFFS2 will break.


On Friday 04 February 2005 01:08, Abhishek Bhattacharya wrote:
>> Hello Yaffs ers and Charles
>>=0D
>> I want to report an observation I had when testing Yaffs2 direct=0D
>> interface. In yaffs2 we have the option of "useHeaderFileSize".
>> Now in yaffs_Scan() , after we scan all blocks, we check if "yaffs2"
>> option is enabled or not.
>>=0D
>> If yaffs2 is enabled we make dev->useHeaderFileSize =3D 1. Upon
enabling=0D
>> this, the expected result would be , that object would get the file=0D
>> size from object header, and not from scanned file size.
>>=0D
>> Now when we do dumpDir(const char* path), my observation was that ,
it=0D
>>
 shows all the files , but sizes are shown as 0.
>>=0D
>> At this point , I tried to make dev->useHeaderFileSize =3D 0. So now ,=0D
>> we directly assign the object's scanned file size to object's file=0D
>> size and VOILA!!! Everything seems to work fine. This time=0D
>> dumpDir(const char* path) returns all the files with there respective

>> sizes!!!
>>=0D
>> Please let me know if you have encountered any such issues!
>>=0D
>> Thanks
>>=0D
>> Abhishek
>>=0D

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