Dear Charles,

I think I've found a bug in yaffsfs.c in function yaffsfs_do_write(int fd, const void *vbuf, unsigned int nbyte, int isPwrite, int offset)
In this function there is the following section -

            if(!h || !obj){
                        // bad handle
                        yaffsfs_SetError(-EBADF);
                        totalWritten = -1;
            } else if( h && obj && (h->readOnly || obj->myDev->readOnly)){
                        yaffsfs_SetError(-EINVAL);
                        totalWritten=-1;
            } else if( h && obj){
                        if(isPwrite)
                                    startPos = offset;
                        else if(h->append)
                                    startPos = yaffs_GetObjectFileLength(obj);
                        else
                                    startPos = h->position;


The bolded "else" is missing and should be added.
Otherwise, if you call this function with "isPwrite = 1", startPos will not get your desired "offset", because it will be overwritten.

Thanks

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Amir Comforti
Zoran Microelectronics Ltd
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Email:   amir.comforti@zoran.com<mailto:amir.comforti@zoran.com>
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