new file mode 100644
--- /dev/null
+++ b/yaffs_fs.c
@@ -0,0 +1,1915 @@
+/*
+ * YAFFS: Yet another FFS. A NAND-flash specific file system.
+ * yaffs_fs.c
+ *
+ * Copyright (C) 2002 Aleph One Ltd.
+ *   for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This is the file system front-end to YAFFS that hooks it up to
+ * the VFS.
+ *
+ * Special notes: 
+ * >> sb->u.generic_sbp points to the yaffs_Device associated with this superblock
+ * >> inode->u.generic_ip points to the associated yaffs_Object.
+ *
+ *
+ * Acknowledgements:
+ * * Luc van OostenRyck for numerous patches.
+ * * Nick Bane for numerous patches.
+ * * Nick Bane for 2.5/2.6 integration.
+ * * Andras Toth for mknod rdev issue.
+ * * Michael Fischer for finding the problem with inode inconsistency.
+ * * Some code bodily lifted from JFFS2.
+ */
+
+
+const char *yaffs_fs_c_version = "$Id$";
+extern const char *yaffs_guts_c_version;
+
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/pagemap.h>
+#include <linux/mtd/mtd.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+
+#include <linux/statfs.h>	/* Added NCB 15-8-2003 */
+#include <asm/statfs.h>
+#define UnlockPage(p) unlock_page(p)
+#define Page_Uptodate(page)	test_bit(PG_uptodate, &(page)->flags)
+//#define kdevname(x) cdevname(to_kdev_t(x))
+#define kdevname(x) "(unavailable)"	// temporary fix
+
+#else
+
+#include <linux/locks.h>
+
+#endif
+
+
+#include <asm/uaccess.h>
+
+#include "yportenv.h"
+#include "yaffs_guts.h"
+
+
+
+
+//unsigned yaffs_traceMask = YAFFS_TRACE_ALWAYS | YAFFS_TRACE_BAD_BLOCKS;
+unsigned yaffs_traceMask = 0xFFFFFFFF;
+
+
+#ifdef CONFIG_YAFFS_RAM_ENABLED
+#include "yaffs_nandemul.h" 
+// 2 MB of RAM for emulation
+#define YAFFS_RAM_EMULATION_SIZE  0x200000
+#endif //CONFIG_YAFFS_RAM_ENABLED
+
+#if CONFIG_YAFFS2_RAM_ENABLED
+#include "yaffs_nandemul2k.h"
+#endif
+
+#ifdef CONFIG_YAFFS_MTD_ENABLED
+#include <linux/mtd/mtd.h>
+#include "yaffs_mtdif.h"
+#include "yaffs_mtdif2.h"
+#endif //CONFIG_YAFFS_MTD_ENABLED
+
+//#define T(x) printk x
+
+
+
+#define yaffs_InodeToObject(iptr) ((yaffs_Object *)((iptr)->u.generic_ip))
+#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode)
+//NCB #define yaffs_SuperToDevice(sb)	((yaffs_Device *)sb->u.generic_sbp)
+
+//#if defined(CONFIG_KERNEL_2_5)
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#define yaffs_SuperToDevice(sb)	((yaffs_Device *)sb->s_fs_info)
+#else
+#define yaffs_SuperToDevice(sb)	((yaffs_Device *)sb->u.generic_sbp)
+#endif
+
+
+static void yaffs_put_super(struct super_block *sb);
+
+#if 0
+static ssize_t yaffs_file_read(struct file *f, char *buf, size_t n, loff_t *pos);
+#endif
+
+static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, loff_t *pos);
+
+static int yaffs_file_flush(struct file* file);
+
+static int yaffs_sync_object(struct file * file, struct dentry *dentry, int datasync);
+
+static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
+
+//#if defined(CONFIG_KERNEL_2_5)	/* Added NCB 185-8-2003 */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *n);
+static struct dentry * yaffs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *n);
+#else
+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
+static struct dentry * yaffs_lookup(struct inode *dir, struct dentry *dentry);
+#endif
+static int yaffs_link(struct dentry *old_dentry, struct inode * dir, struct dentry * dentry);
+static int yaffs_unlink(struct inode * dir, struct dentry *dentry);
+static int yaffs_symlink(struct inode * dir, struct dentry *dentry, const char * symname);
+static int yaffs_mkdir(struct inode * dir, struct dentry * dentry, int mode);
+
+//#if defined(CONFIG_KERNEL_2_5)
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
+#else
+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, int dev);
+#endif
+static int yaffs_rename(struct inode * old_dir, struct dentry *old_dentry, struct inode * new_dir,struct dentry *new_dentry);
+static int yaffs_setattr(struct dentry *dentry, struct iattr *attr);
+
+//#if defined(CONFIG_KERNEL_2_5)	/* Added NCB 185-8-2003 */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
+#else
+static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
+#endif
+static void yaffs_read_inode (struct inode *inode);
+
+//#if defined(CONFIG_KERNEL_2_5)
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static struct super_block *yaffs_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data);
+#else
+static struct super_block *yaffs_read_super(struct super_block * sb, void * data, int silent);
+#endif
+
+static void yaffs_put_inode (struct inode *inode);
+static void yaffs_delete_inode(struct inode *);
+static void yaffs_clear_inode(struct inode *);
+
+static int yaffs_readpage(struct file *file, struct page * page);
+static int yaffs_writepage(struct page *page);
+static int yaffs_prepare_write(struct file *f, struct page *pg, unsigned offset, unsigned to);
+static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, unsigned to);
+
+static int yaffs_readlink(struct dentry *dentry, char *buffer, int buflen);
+static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
+
+
+
+
+static struct address_space_operations yaffs_file_address_operations = {
+	readpage:		yaffs_readpage,
+	writepage:		yaffs_writepage,
+	prepare_write:	yaffs_prepare_write,
+	commit_write:	yaffs_commit_write
+};
+
+
+static struct file_operations yaffs_file_operations = {
+
+	read:		generic_file_read,
+	write:		generic_file_write,
+
+	mmap:		generic_file_mmap,
+	flush:		yaffs_file_flush,
+	fsync:		yaffs_sync_object,
+};
+
+
+static struct inode_operations yaffs_file_inode_operations = {
+	setattr:	yaffs_setattr,
+};
+
+
+struct inode_operations yaffs_symlink_inode_operations =
+{	
+	readlink:	yaffs_readlink,
+	follow_link:	yaffs_follow_link,
+	setattr:	yaffs_setattr
+};
+
+static struct inode_operations yaffs_dir_inode_operations = {
+	create:		yaffs_create,
+	lookup:		yaffs_lookup,
+	link:		yaffs_link,
+	unlink:		yaffs_unlink,	
+	symlink:	yaffs_symlink,
+	mkdir:		yaffs_mkdir,
+	rmdir:		yaffs_unlink,
+	mknod:		yaffs_mknod,
+	rename:		yaffs_rename,
+	setattr:	yaffs_setattr,
+};
+
+static struct file_operations yaffs_dir_operations = {
+	read:		generic_read_dir,
+	readdir:	yaffs_readdir,
+	fsync:		yaffs_sync_object,
+};
+
+
+static struct super_operations yaffs_super_ops = {
+	statfs:			yaffs_statfs,
+	read_inode:		yaffs_read_inode,
+	put_inode:		yaffs_put_inode,
+	put_super:		yaffs_put_super,
+//	remount_fs:
+	delete_inode:		yaffs_delete_inode,
+	clear_inode:		yaffs_clear_inode,
+};
+
+
+
+static void yaffs_GrossLock(yaffs_Device *dev)
+{
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs locking\n"));
+
+	down(&dev->grossLock);
+}
+
+static void yaffs_GrossUnlock(yaffs_Device *dev)
+{
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs unlocking\n"));
+	up(&dev->grossLock);
+
+}
+
+static int yaffs_readlink(struct dentry *dentry, char *buffer, int buflen)
+{
+	unsigned char *alias;
+	int ret;
+
+	yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
+
+
+	yaffs_GrossLock(dev);
+	
+	alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry));
+	
+	yaffs_GrossUnlock(dev);
+	
+	if(!alias)
+		return -ENOMEM;
+
+	ret = vfs_readlink(dentry, buffer, buflen, alias);
+	kfree(alias);
+	return ret;
+}
+
+static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+	unsigned char *alias;
+	int ret;
+	yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
+
+
+	yaffs_GrossLock(dev);
+
+	alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry));
+	
+	yaffs_GrossUnlock(dev);
+	
+	if(!alias)
+		return -ENOMEM;
+
+	ret = vfs_follow_link(nd,alias);
+	kfree(alias);
+	return ret;
+}
+
+
+struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,yaffs_Object *obj);
+
+/*
+ * Lookup is used to find objects in the fs
+ */
+//#if defined(CONFIG_KERNEL_2_5)	/* Added NCB 185-8-2003 */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+
+static struct dentry * yaffs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *n)
+#else
+static struct dentry * yaffs_lookup(struct inode *dir, struct dentry *dentry)
+#endif
+{
+	yaffs_Object *obj;
+	struct inode *inode = NULL; // NCB 2.5/2.6 needs NULL here
+	
+	yaffs_Device *dev = yaffs_InodeToObject(dir)->myDev;
+
+
+	yaffs_GrossLock(dev);
+
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_lookup for %d:%s\n",yaffs_InodeToObject(dir)->objectId,dentry->d_name.name));
+	
+	obj = yaffs_FindObjectByName(yaffs_InodeToObject(dir),dentry->d_name.name);
+	
+	obj = yaffs_GetEquivalentObject(obj); // in case it was a hardlink
+	
+
+	
+	if(obj)
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_lookup found %d\n",obj->objectId));
+		
+		inode = yaffs_get_inode(dir->i_sb, obj->st_mode,0,obj);
+		
+		if(inode)
+		{
+			T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_loookup dentry \n"));
+/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to d_add even if NULL inode */	
+#if 0
+			//dget(dentry); // try to solve directory bug
+			d_add(dentry,inode);
+			
+			yaffs_GrossUnlock(dev);
+
+			// return dentry;
+			return NULL;
+#endif
+		}
+
+	}
+	else
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_lookup not found\n"));
+		
+	}
+	yaffs_GrossUnlock(dev);
+
+/* added NCB for 2.5/6 compatability - forces add even if inode is NULL which creates dentry hash*/	
+	d_add(dentry,inode);
+	
+	return NULL;
+	//	return (ERR_PTR(-EIO));
+	
+}
+
+// For now put inode is just for debugging
+// Put inode is called when the inode **structure** is put.
+static void yaffs_put_inode(struct inode *inode)
+{
+	T(YAFFS_TRACE_OS,("yaffs_put_inode: ino %d, count %d\n",(int)inode->i_ino, atomic_read(&inode->i_count)));
+	
+}
+
+// clear is called to tell the fs to release any per-inode data it holds
+static void yaffs_clear_inode(struct inode *inode)
+{
+	yaffs_Object *obj;
+	yaffs_Device *dev;
+	
+	obj = yaffs_InodeToObject(inode);
+	
+	T(YAFFS_TRACE_OS,("yaffs_clear_inode: ino %d, count %d %s\n",(int)inode->i_ino, atomic_read(&inode->i_count),
+		obj ? "object exists" : "null object"));	
+
+	if(obj)
+	{
+		dev = obj->myDev;
+		yaffs_GrossLock(dev);
+		
+		// Clear the association between the inode ant the yaffs_Object.
+		obj->myInode = NULL;
+		inode->u.generic_ip = NULL;
+		
+		// If the object freeing was deferred, then the real free happens now.
+		// This should fix the inode inconsistency problem.
+		
+		yaffs_HandleDeferedFree(obj);
+		
+		yaffs_GrossUnlock(dev);
+	}
+	
+	
+}
+
+// delete is called when the link count is zero and the inode
+// is put (ie. nobody wants to know about it anymore, time to
+// delete the file).
+// NB Must call clear_inode()
+static void yaffs_delete_inode(struct inode *inode)
+{
+	yaffs_Object *obj = yaffs_InodeToObject(inode);
+	yaffs_Device *dev;
+
+	T(YAFFS_TRACE_OS,("yaffs_delete_inode: ino %d, count %d %s\n",(int)inode->i_ino, atomic_read(&inode->i_count),
+		obj ? "object exists" : "null object"));
+	
+	if(obj)
+	{
+	 	dev = obj->myDev;
+		yaffs_GrossLock(dev);
+		yaffs_DeleteFile(obj);
+		yaffs_GrossUnlock(dev);
+	}
+	clear_inode(inode);
+}
+
+
+static int yaffs_file_flush(struct file* file)
+{
+	yaffs_Object *obj = yaffs_DentryToObject(file->f_dentry);
+	
+	yaffs_Device *dev = obj->myDev;
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_file_flush object %d (%s)\n",obj->objectId,
+				obj->dirty ? "dirty" : "clean"));
+
+	yaffs_GrossLock(dev);
+	
+    yaffs_FlushFile(obj,1);
+
+	yaffs_GrossUnlock(dev);
+
+    return 0;
+}
+
+
+
+static int yaffs_readpage_nolock(struct file *f, struct page * pg)
+{
+	// Lifted from jffs2
+	
+	yaffs_Object *obj;
+	unsigned char *pg_buf;
+	int ret;
+
+	yaffs_Device *dev;
+
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_readpage at %08x, size %08x\n",
+	              (unsigned)(pg->index << PAGE_CACHE_SHIFT), (unsigned)PAGE_CACHE_SIZE));
+
+	obj  = yaffs_DentryToObject(f->f_dentry);
+
+	dev = obj->myDev;
+	
+	
+	if (!PageLocked(pg))
+                PAGE_BUG(pg);
+
+	pg_buf = kmap(pg);
+	/* FIXME: Can kmap fail? */
+
+	yaffs_GrossLock(dev);
+	
+	ret = yaffs_ReadDataFromFile(obj, pg_buf, pg->index << PAGE_CACHE_SHIFT, PAGE_CACHE_SIZE);
+
+	yaffs_GrossUnlock(dev);
+	
+	if(ret >= 0) ret = 0;
+
+	if (ret) {
+		ClearPageUptodate(pg);
+		SetPageError(pg);
+	} else {
+		SetPageUptodate(pg);
+		ClearPageError(pg);
+	}
+
+	flush_dcache_page(pg);
+	kunmap(pg);
+
+
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_readpage done\n"));
+	return ret;
+}
+
+static int yaffs_readpage_unlock(struct file *f, struct page *pg)
+{
+	int ret = yaffs_readpage_nolock(f,pg);
+	UnlockPage(pg);
+	return ret;
+}
+
+static int yaffs_readpage(struct file *f, struct page * pg)
+{
+	return yaffs_readpage_unlock(f,pg);
+}
+
+// writepage inspired by/stolen from smbfs
+//
+
+static int yaffs_writepage(struct page *page)
+{
+	struct address_space *mapping = page->mapping;
+	struct inode *inode;
+	unsigned long end_index;
+	char *buffer;
+	yaffs_Object *obj;
+	int nWritten = 0;
+	unsigned nBytes;
+
+	if (!mapping)
+		BUG();
+	inode = mapping->host;
+	if (!inode)
+		BUG();
+
+	end_index = inode->i_size >> PAGE_CACHE_SHIFT;
+
+	/* easy case */
+	if (page->index < end_index)
+	{
+		nBytes = PAGE_CACHE_SIZE;
+	}
+	else
+	{
+		nBytes = inode->i_size & (PAGE_CACHE_SIZE-1);
+	}
+	//  What's happening here?
+	///* OK, are we completely out? */
+	//if (page->index >= end_index+1 || !offset)
+	//	return -EIO;
+
+	get_page(page);
+
+
+	buffer = kmap(page);
+
+	obj = yaffs_InodeToObject(inode);
+	yaffs_GrossLock(obj->myDev);
+
+
+	nWritten = yaffs_WriteDataToFile(obj,buffer,page->index << PAGE_CACHE_SHIFT,nBytes);
+
+	yaffs_GrossUnlock(obj->myDev);
+	
+	kunmap(page);
+	SetPageUptodate(page);
+	UnlockPage(page);
+	put_page(page);
+
+	return (nWritten == nBytes) ? 0  : -ENOSPC;
+}
+
+
+
+static int yaffs_prepare_write(struct file *f, struct page *pg, unsigned offset, unsigned to)
+{
+
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_prepair_write\n"));
+	if(!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
+		return  yaffs_readpage_nolock(f,pg);    
+
+	return 0;
+	
+}
+
+static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, unsigned to)
+{
+
+	void *addr = page_address(pg) + offset;
+	loff_t pos = (((loff_t)pg->index) << PAGE_CACHE_SHIFT) + offset;
+	int nBytes = to - offset;
+	int nWritten;
+	
+	unsigned spos = pos;
+	unsigned saddr = (unsigned)addr;
+
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_commit_write addr %x pos %x nBytes %d\n",saddr,spos,nBytes));
+	
+	nWritten = yaffs_file_write(f,addr, nBytes, &pos);
+	
+	if(nWritten != nBytes)
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_commit_write not same size nWritten %d  nBytes %d\n",nWritten,nBytes));
+		SetPageError(pg);
+		ClearPageUptodate(pg);
+	}
+	else
+	{
+		SetPageUptodate(pg);
+	}
+
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_commit_write returning %d\n",nWritten));
+	
+	return nWritten;
+
+}
+
+
+
+static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object *obj)
+{
+	if (inode && obj) 
+	{
+		inode->i_ino = obj->objectId;
+		inode->i_mode = obj->st_mode;
+		inode->i_uid = obj->st_uid;
+		inode->i_gid = obj->st_gid;
+		inode->i_blksize = inode->i_sb->s_blocksize;
+//#if defined(CONFIG_KERNEL_2_5)
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+
+		inode->i_rdev = old_decode_dev(obj->st_rdev);
+		inode->i_atime.tv_sec = (time_t)(obj->st_atime);
+		inode->i_atime.tv_nsec = 0;
+		inode->i_mtime.tv_sec = (time_t)obj->st_mtime;
+		inode->i_mtime.tv_nsec =0;
+		inode->i_ctime.tv_sec = (time_t)obj->st_ctime;
+		inode->i_ctime.tv_nsec = 0;
+#else
+		inode->i_rdev = obj->st_rdev;
+		inode->i_atime = obj->st_atime;
+		inode->i_mtime = obj->st_mtime;
+		inode->i_ctime = obj->st_ctime;
+#endif
+		inode->i_size = yaffs_GetObjectFileLength(obj);
+		inode->i_blocks = (inode->i_size + 511) >> 9;
+
+		inode->i_nlink = yaffs_GetObjectLinkCount(obj);
+		
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_FillInode mode %x uid %d gid %d size %d count %d\n",
+				inode->i_mode, inode->i_uid, inode->i_gid, (int)inode->i_size, atomic_read(&inode->i_count)));
+		
+		switch (obj->st_mode & S_IFMT) 
+		{
+			default: // fifo, device or socket
+				init_special_inode(inode, obj->st_mode,(dev_t)(obj->st_rdev));
+				break;
+			case S_IFREG:	// file		
+				inode->i_op = &yaffs_file_inode_operations;
+				inode->i_fop = &yaffs_file_operations;
+				inode->i_mapping->a_ops = &yaffs_file_address_operations;
+				break;
+			case S_IFDIR:	// directory
+				inode->i_op = &yaffs_dir_inode_operations;
+				inode->i_fop = &yaffs_dir_operations;
+				break;
+			case S_IFLNK:	// symlink
+				inode->i_op = &yaffs_symlink_inode_operations;
+				break;
+		}
+		
+		
+		inode->u.generic_ip = obj;
+		obj->myInode = inode;
+		
+	}
+	else
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_FileInode invalid parameters\n"));
+	}
+
+}
+
+struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,yaffs_Object *obj)
+{
+	struct inode * inode;
+	
+	if(!sb)
+	{
+	  T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_get_inode for NULL super_block!!\n"));
+	  return NULL;
+	  
+	}
+	
+	if(!obj)
+	{
+	  T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_get_inode for NULL object!!\n"));
+	  return NULL;
+	  
+	}
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_get_inode for object %d\n",obj->objectId));
+
+	inode = iget(sb,obj->objectId);
+
+	// NB Side effect: iget calls back to yaffs_read_inode().
+	// iget also increments the inode's i_count
+	
+	return inode;
+}
+
+#if 0
+
+// No longer used because we use generic rw */
+static ssize_t yaffs_file_read(struct file *f, char *buf, size_t n, loff_t *pos)
+{
+	yaffs_Object *obj;
+	int nRead,ipos;
+	struct inode *inode;
+	yaffs_Device *dev;
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_file_read\n"));
+
+	obj  = yaffs_DentryToObject(f->f_dentry);
+	
+	dev = obj->myDev;
+	
+	yaffs_GrossLock(dev);
+	
+	inode = f->f_dentry->d_inode;
+	
+	if (*pos < inode->i_size) 
+	{
+			if (*pos + n > inode->i_size)
+			{
+				n = inode->i_size - *pos;
+			}
+	}
+	else
+	{
+		n = 0;
+	}
+	
+	nRead = yaffs_ReadDataFromFile(obj,buf,*pos,n);
+	if(nRead > 0)
+	{
+		f->f_pos += nRead;
+	}
+	
+	yaffs_GrossUnlock(dev);
+	
+	ipos = *pos;
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_file_read read %d bytes, %d read at %d\n",n,nRead,ipos));
+	return nRead;
+	
+}
+
+#endif
+
+static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, loff_t *pos)
+{
+	yaffs_Object *obj;
+	int nWritten,ipos;
+	struct inode *inode;
+	yaffs_Device *dev;
+	
+	
+	obj  = yaffs_DentryToObject(f->f_dentry);
+	
+	dev = obj->myDev;
+	
+	yaffs_GrossLock(dev);
+
+	inode = f->f_dentry->d_inode;
+
+	if(!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND)
+	{
+		ipos = inode->i_size;
+	}
+	else
+	{
+		ipos = *pos;
+	}
+	
+	
+	if(!obj)
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_file_write: hey obj is null!\n"));
+	}
+	else
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_file_write about to write writing %d bytes to object %d at %d\n",n,obj->objectId,ipos));
+	}
+
+	nWritten = yaffs_WriteDataToFile(obj,buf,ipos,n);
+
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_file_write writing %d bytes, %d written at %d\n",n,nWritten,ipos));
+	if(nWritten > 0)
+	{
+		ipos += nWritten;
+		*pos = ipos;
+		if(ipos > inode->i_size)
+		{
+			inode->i_size = ipos;
+			inode->i_blocks = (ipos + 511)>>9;
+			
+			T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_file_write size updated to %d bytes, %d blocks\n",ipos,(int)(inode->i_blocks)));
+		}
+		
+	}
+	yaffs_GrossUnlock(dev);
+	
+	return nWritten != n ? -ENOSPC : nWritten;
+}
+
+
+
+static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
+{
+	yaffs_Object *obj;
+	yaffs_Device *dev;
+	struct inode *inode = f->f_dentry->d_inode;
+	unsigned long offset, curoffs;
+	struct list_head *i;	
+	yaffs_Object *l;
+	
+	char name[YAFFS_MAX_NAME_LENGTH	+1];
+		
+	obj =  yaffs_DentryToObject(f->f_dentry);
+	dev = obj->myDev;
+	
+	yaffs_GrossLock(dev);
+	
+	offset = f->f_pos;
+	
+	T(YAFFS_TRACE_OS,("yaffs_readdir: starting at %d\n",(int)offset));
+	
+	if(offset == 0)
+	{
+        T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_readdir: entry . ino %d \n",(int)inode->i_ino));
+		if(filldir(dirent,".",1,offset,inode->i_ino,DT_DIR) < 0)
+		{
+			goto out;
+		}
+		offset++;
+		f->f_pos++;
+	}
+	if(offset == 1)
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_readdir: entry .. ino %d \n",(int)f->f_dentry->d_parent->d_inode->i_ino));
+		if(filldir(dirent,"..",2,offset,f->f_dentry->d_parent->d_inode->i_ino,DT_DIR) < 0)
+		{
+			goto out;
+		}
+		offset++;
+		f->f_pos++;
+	}
+	
+	curoffs = 1;
+	
+	list_for_each(i,&obj->variant.directoryVariant.children)
+	{
+		curoffs++;
+		if(curoffs >= offset)
+		{		
+			l = list_entry(i, yaffs_Object,siblings);
+			
+			yaffs_GetObjectName(l,name,YAFFS_MAX_NAME_LENGTH+1); 
+			T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_readdir: %s inode %d\n",name,yaffs_GetObjectInode(l)));
+			
+			if(filldir(dirent,
+					   name,
+					   strlen(name),
+					   offset,
+					   yaffs_GetObjectInode(l),
+					   yaffs_GetObjectType(l))
+					   < 0)
+			{
+				goto up_and_out;
+			}
+			
+			offset++;
+			f->f_pos++;	   
+		}
+	}
+
+  up_and_out:
+  out:
+  
+    yaffs_GrossUnlock(dev);
+    
+	return 0;
+}
+
+
+/*
+ * File creation. Allocate an inode, and we're done..
+ */
+//#if defined(CONFIG_KERNEL_2_5)
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
+#else
+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, int rdev)
+#endif
+{
+	struct inode *inode;
+	
+	yaffs_Object *obj = NULL;
+	yaffs_Device *dev;
+	
+	yaffs_Object *parent = yaffs_InodeToObject(dir);
+	
+	int error = -ENOSPC;
+
+	if(parent)
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_mknod: parent object %d type %d\n",
+					 parent->objectId,parent->variantType));
+	}
+	else
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_mknod: could not get parent object\n"));
+		return -EPERM;
+	}
+	
+	T(YAFFS_TRACE_OS,("yaffs_mknod: making oject for %s, mode %x dev %x\n",
+					dentry->d_name.name, mode,rdev));
+
+	dev = parent->myDev;
+	
+	yaffs_GrossLock(dev);
+
+	switch (mode & S_IFMT) 
+	{
+		default:
+			// Special (socket, fifo, device...)
+			T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_mknod: making special\n"));
+			obj = yaffs_MknodSpecial(parent,dentry->d_name.name,mode,current->uid, current->gid,rdev);
+			break;
+		case S_IFREG:	// file		
+			T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_mknod: making file\n"));
+			obj = yaffs_MknodFile(parent,dentry->d_name.name,mode,current->uid, current->gid);
+			break;
+		case S_IFDIR:	// directory
+			T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_mknod: making directory\n"));
+			obj = yaffs_MknodDirectory(parent,dentry->d_name.name,mode,current->uid, current->gid);
+			break;
+		case S_IFLNK:	// symlink
+			T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_mknod: making file\n"));
+			obj = NULL; // Do we ever get here?
+			break;
+	}
+	
+	if(obj)
+	{
+		inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj);
+		d_instantiate(dentry, inode);
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_mknod created object %d count = %d\n",obj->objectId,atomic_read(&inode->i_count)));
+		error = 0;
+	}
+	else
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_mknod failed making object\n"));
+		error = -ENOMEM;
+	}
+
+	yaffs_GrossUnlock(dev);
+
+	return error;
+}
+
+static int yaffs_mkdir(struct inode * dir, struct dentry * dentry, int mode)
+{
+	int retVal;
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_mkdir\n"));
+	retVal =  yaffs_mknod(dir, dentry, mode | S_IFDIR, 0);
+#if 0
+ // attempt to fix dir bug - didn't work
+	if(!retVal)
+	{
+		dget(dentry);
+	}
+#endif
+	return retVal;
+}
+
+//#if defined(CONFIG_KERNEL_2_5)	/* Added NCB 185-8-2003 */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *n)
+#else
+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode)
+#endif
+{
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_create\n"));
+	return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
+}
+
+
+static int yaffs_unlink(struct inode * dir, struct dentry *dentry)
+{
+	int retVal;
+	
+	yaffs_Device *dev;
+	
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_unlink %d:%s\n",(int)(dir->i_ino),dentry->d_name.name));
+	
+	dev = yaffs_InodeToObject(dir)->myDev;
+	
+	yaffs_GrossLock(dev);
+	
+	
+	retVal = yaffs_Unlink(yaffs_InodeToObject(dir),dentry->d_name.name);
+	
+	
+	yaffs_GrossUnlock(dev);
+	
+	if( retVal == YAFFS_OK)
+	{
+		dentry->d_inode->i_nlink--;
+		mark_inode_dirty(dentry->d_inode);
+		return 0;
+	}
+	else
+	{
+		return -ENOTEMPTY;
+	}
+}
+
+
+/*
+ * Create a link...
+ */
+static int yaffs_link(struct dentry *old_dentry, struct inode * dir, struct dentry * dentry)
+{
+	struct inode *inode = old_dentry->d_inode;
+	yaffs_Object *obj = NULL;
+	yaffs_Object *link=NULL;
+	yaffs_Device *dev;
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_link\n"));
+	
+	obj = yaffs_InodeToObject(inode);
+	dev = obj->myDev;
+	
+	yaffs_GrossLock(dev);
+
+	if (!S_ISDIR(inode->i_mode))	// Don't link directories
+	{
+		link = yaffs_Link(yaffs_InodeToObject(dir),dentry->d_name.name,obj);
+	}
+	
+
+	if(link)
+	{
+		old_dentry->d_inode->i_nlink =  yaffs_GetObjectLinkCount(obj);
+		d_instantiate(dentry, old_dentry->d_inode);
+		atomic_inc(&old_dentry->d_inode->i_count);
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_link link count %d i_count %d\n",	
+			old_dentry->d_inode->i_nlink,atomic_read(&old_dentry->d_inode->i_count)));
+	
+	}
+	
+	yaffs_GrossUnlock(dev);
+	
+
+	if(link)
+	{
+	
+		return 0;
+	}
+	
+	
+	return -EPERM; 
+}
+
+
+static int yaffs_symlink(struct inode * dir, struct dentry *dentry, const char * symname)
+{
+	yaffs_Object *obj;
+	yaffs_Device *dev;
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_symlink\n"));
+	
+	dev = yaffs_InodeToObject(dir)->myDev;
+	yaffs_GrossLock(dev);
+	obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name, 
+							 S_IFLNK | S_IRWXUGO, current->uid, current->gid,
+							 symname);
+	yaffs_GrossUnlock(dev);
+
+	if(obj)
+	{
+
+		struct inode* inode;
+	
+		inode = yaffs_get_inode(dir->i_sb, obj->st_mode, 0, obj);
+		d_instantiate(dentry, inode);
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"symlink created OK\n"));
+		return 0;
+	}
+	else
+	{
+		T(YAFFS_TRACE_OS,(KERN_DEBUG"symlink not created\n"));
+
+	}
+	
+	return -ENOMEM;
+}
+
+static int yaffs_sync_object(struct file * file, struct dentry *dentry, int datasync)
+{
+
+	yaffs_Object *obj;
+	yaffs_Device *dev;
+	
+	obj = yaffs_DentryToObject(dentry);
+
+	dev = obj->myDev;
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_sync_object\n"));
+	yaffs_GrossLock(dev);
+	yaffs_FlushFile(obj,1);
+	yaffs_GrossUnlock(dev);
+	return 0;
+}
+
+/*
+ * The VFS layer already does all the dentry stuff for rename.
+ *
+ * NB: POSIX says you can rename an object over an old object of the same name
+ */
+static int yaffs_rename(struct inode * old_dir, struct dentry *old_dentry, struct inode * new_dir,struct dentry *new_dentry)
+{
+	yaffs_Device *dev;
+	int retVal = YAFFS_FAIL;
+	int removed = 0;
+	yaffs_Object *target;
+	
+	dev = yaffs_InodeToObject(old_dir)->myDev;
+
+	yaffs_GrossLock(dev);
+	
+	// Check if the target is an existing directory that is not empty.
+	target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir),new_dentry->d_name.name);
+	
+	if(target &&
+	   target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+	   !list_empty(&target->variant.directoryVariant.children))
+	{
+		retVal = YAFFS_FAIL;
+	}
+	else
+	{
+	   
+		// Unlink the target if it exists
+		removed = yaffs_Unlink(yaffs_InodeToObject(new_dir),new_dentry->d_name.name);
+
+	
+		retVal =  yaffs_RenameObject(yaffs_InodeToObject(old_dir),old_dentry->d_name.name,
+									yaffs_InodeToObject(new_dir),new_dentry->d_name.name);
+									
+	}
+	yaffs_GrossUnlock(dev);
+	
+	if(retVal == YAFFS_OK)
+	{
+		if(removed == YAFFS_OK)
+		{
+			new_dentry->d_inode->i_nlink--;
+			mark_inode_dirty(new_dentry->d_inode);
+		}
+		
+		return 0;
+	}
+	else
+	{
+		return -ENOTEMPTY;
+	}
+	
+
+}
+
+static int yaffs_setattr(struct dentry *dentry, struct iattr *attr)
+{
+	struct inode *inode = dentry->d_inode;
+	int error;
+	yaffs_Device *dev;
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_setattr of object %d\n",yaffs_InodeToObject(inode)->objectId));
+	
+	if((error = inode_change_ok(inode,attr)) == 0)
+	{
+	
+		dev = yaffs_InodeToObject(inode)->myDev;
+		yaffs_GrossLock(dev);
+		if(yaffs_SetAttributes(yaffs_InodeToObject(inode),attr) == YAFFS_OK)
+		{
+			error = 0;
+		}
+		else
+		{
+			error = -EPERM;
+		}
+		yaffs_GrossUnlock(dev);
+		inode_setattr(inode,attr);
+	}
+	return error;
+}
+
+//#if defined(CONFIG_KERNEL_2_5)	/* Added NCB 185-8-2003 */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
+#else
+static int yaffs_statfs(struct super_block *sb, struct statfs *buf)
+#endif
+{
+	yaffs_Device *dev = yaffs_SuperToDevice(sb);
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_statfs\n"));
+
+	yaffs_GrossLock(dev);
+	
+	buf->f_type = YAFFS_MAGIC;
+	buf->f_bsize = sb->s_blocksize;
+	buf->f_namelen = 255;
+	buf->f_blocks = (dev->endBlock - dev->startBlock + 1) * YAFFS_CHUNKS_PER_BLOCK/
+						(sb->s_blocksize/YAFFS_BYTES_PER_CHUNK);
+	buf->f_files = 0;
+	buf->f_ffree = 0;
+	buf->f_bfree = yaffs_GetNumberOfFreeChunks(dev)/
+						(sb->s_blocksize/YAFFS_BYTES_PER_CHUNK);
+	buf->f_bavail =  buf->f_bfree;
+	
+	yaffs_GrossUnlock(dev);
+	return 0;
+}
+
+static void yaffs_read_inode (struct inode *inode)
+{
+	// NB This is called as a side effect of other functions and
+	// thus gross locking should always be in place already.
+	
+	yaffs_Object *obj ; 
+	yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb);
+	
+	T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_read_inode for %d\n",(int)inode->i_ino));
+
+	obj  = yaffs_FindObjectByNumber(dev,inode->i_ino);
+	
+	yaffs_FillInodeFromObject(inode,obj);
+
+}
+
+
+
+// Todo
+// Currently we only can report a single partition. Need to use lists here
+static yaffs_Device *yaffs_dev;
+static yaffs_Device *yaffsram_dev;
+
+
+
+static void yaffs_put_super(struct super_block *sb)
+{
+	yaffs_Device *dev = yaffs_SuperToDevice(sb);
+	
+	yaffs_GrossLock(dev);
+	if(dev->putSuperFunc)
+	{
+		 dev->putSuperFunc(sb);
+	}
+	yaffs_Deinitialise(dev);
+	yaffs_GrossUnlock(dev);
+
+	if(dev == yaffs_dev) yaffs_dev = NULL;
+	if(dev == yaffsram_dev) yaffsram_dev = NULL;
+		
+	kfree(dev);
+}
+
+
+#ifdef CONFIG_YAFFS_MTD_ENABLED
+
+static void  yaffs_MTDPutSuper(struct super_block *sb)
+{
+	
+	struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
+	
+	if(mtd->sync)
+	{
+		mtd->sync(mtd);
+	}
+	
+	put_mtd_device(mtd);
+}
+
+#endif
+
+
+static struct super_block *yaffs_internal_read_super(int yaffsVersion,int useRam, struct super_block * sb, void * data, int silent)
+{
+	int nBlocks;
+	struct inode * inode = NULL;
+	struct dentry * root;
+	yaffs_Device *dev;
+	int err;
+	
+	sb->s_magic = YAFFS_MAGIC;
+	sb->s_op = &yaffs_super_ops;
+	
+	if(!sb)
+		printk(KERN_INFO"yaffs: sb is NULL\n");
+	else if(!sb->s_dev)
+		printk(KERN_INFO"yaffs: sb->s_dev is NULL\n");
+	else if(! kdevname(sb->s_dev))
+		printk(KERN_INFO"yaffs: kdevname is NULL\n");
+	else
+		printk(KERN_INFO"yaffs: dev is %d name is \"%s\"\n", sb->s_dev, kdevname(sb->s_dev));
+
+	
+
+#ifdef CONFIG_YAFFS_USE_CHUNK_SIZE
+	sb->s_blocksize = YAFFS_BYTES_PER_CHUNK;
+	sb->s_blocksize_bits = YAFFS_CHUNK_SIZE_SHIFT;
+#else
+	sb->s_blocksize = PAGE_CACHE_SIZE;
+	sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
+#endif
+	T(YAFFS_TRACE_OS,("yaffs_read_super: Using yaffs%d\n",yaffsVersion));
+	T(YAFFS_TRACE_OS,("yaffs_read_super: %s block size %d\n", useRam ? "RAM" : "MTD",(int)(sb->s_blocksize)));
+
+#ifdef CONFIG_YAFFS_DISABLE_WRITE_VERIFY
+	T(YAFFS_TRACE_OS,("yaffs: Write verification disabled. All guarantees null and void\n"));
+#endif
+
+
+	
+	if(useRam)
+	{
+
+#ifdef CONFIG_YAFFS_RAM_ENABLED
+		// Set the yaffs_Device up for ram emulation
+
+		sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device),GFP_KERNEL);
+		if(!dev)
+		{
+			// Deep shit could not allocate device structure
+			T(YAFFS_TRACE_OS,("yaffs_read_super: Failed trying to allocate yaffs_Device.\n"));
+			return NULL;
+		}
+
+		memset(dev,0,sizeof(yaffs_Device));
+		dev->genericDevice = NULL; // Not used for RAM emulation.
+
+		nBlocks = YAFFS_RAM_EMULATION_SIZE / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
+		dev->startBlock = 1;  // Don't use block 0
+		dev->endBlock = nBlocks - 1;
+		dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
+		dev->nBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+		dev->nReservedBlocks = 5;
+		
+		if(yaffsVersion == 2)
+		{
+			dev->writeChunkWithTagsToNAND  = nandemul2k_WriteChunkWithTagsToNAND;
+			dev->readChunkWithTagsFromNAND = nandemul2k_ReadChunkWithTagsFromNAND;
+			dev->markNANDBlockBad          = nandemul2k_MarkNANDBlockBad;
+			dev->queryNANDBlock            = nandemul2k_QueryNANDBlock;
+			dev->eraseBlockInNAND          = nandemul2k_EraseBlockInNAND;
+			dev->initialiseNAND            = nandemul2k_InitialiseNAND;
+			dev->isYaffs2 = 1;
+			dev->nChunksPerBlock = nandemul2k_GetChunksPerBlock();
+			dev->nBytesPerChunk =  nandemul2k_GetBytesPerChunk();;
+			nBlocks = nandemul2k_GetNumberOfBlocks();
+			dev->startBlock = 1;  // Don't use block 0
+			dev->endBlock = nBlocks - 1;
+		}
+		else
+		{
+			dev->writeChunkToNAND = nandemul_WriteChunkToNAND;
+			dev->readChunkFromNAND = nandemul_ReadChunkFromNAND;
+			dev->eraseBlockInNAND = nandemul_EraseBlockInNAND;
+			dev->initialiseNAND = nandemul_InitialiseNAND;
+			dev->isYaffs2 = 0;
+		}
+		
+		yaffsram_dev = dev;
+		
+#endif
+
+	}
+	else
+	{	
+#ifdef CONFIG_YAFFS_MTD_ENABLED
+		struct mtd_info *mtd;
+		
+		T(YAFFS_TRACE_ALWAYS,("yaffs: Attempting MTD mount on %u.%u, \"%s\"\n",
+		 MAJOR(sb->s_dev),MINOR(sb->s_dev),kdevname(sb->s_dev)));
+			
+		// Check it's an mtd device.....
+		if(MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR)
+		{
+			return NULL; // This isn't an mtd device
+		} 
+		
+		// Get the device
+		mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
+		if (!mtd) 
+		{
+			T(YAFFS_TRACE_ALWAYS,("yaffs: MTD device #%u doesn't appear to exist\n", MINOR(sb->s_dev)));
+			return NULL;
+		}
+		
+		// Check it's NAND
+		if(mtd->type != MTD_NANDFLASH)
+		{
+			T(YAFFS_TRACE_ALWAYS,("yaffs: MTD device is not NAND it's type %d\n", mtd->type));
+			return NULL;
+		}
+
+		T(YAFFS_TRACE_OS,(" erase %x\n",mtd->erase));
+		T(YAFFS_TRACE_OS,(" read %x\n",mtd->read));
+		T(YAFFS_TRACE_OS,(" write %x\n",mtd->write));
+		T(YAFFS_TRACE_OS,(" readoob %x\n",mtd->read_oob));
+		T(YAFFS_TRACE_OS,(" writeoob %x\n",mtd->write_oob));
+		T(YAFFS_TRACE_OS,(" block_isbad %x\n",mtd->block_isbad));
+		T(YAFFS_TRACE_OS,(" block_markbad %x\n",mtd->block_markbad));
+		T(YAFFS_TRACE_OS,(" oobblock %d\n",mtd->oobblock));
+		T(YAFFS_TRACE_OS,(" oobsize %d\n",mtd->oobsize));
+		T(YAFFS_TRACE_OS,(" erasesize %d\n",mtd->erasesize));
+		T(YAFFS_TRACE_OS,(" size %d\n",mtd->size));
+
+		if(yaffsVersion == 2)
+		{
+			// Check for version 2 style functions
+			if(!mtd->erase ||
+			   !mtd->block_isbad ||
+			   !mtd->block_markbad ||
+			   !mtd->read  ||
+			   !mtd->write ||
+#ifndef CONFIG_YAFFS_USE_OLD_MTD
+			   !mtd->write_ecc ||
+			   !mtd->read_ecc ||
+#endif
+			   !mtd->read_oob ||
+			   !mtd->write_oob )
+			{
+				T(YAFFS_TRACE_ALWAYS,("yaffs: MTD device does not support required functions\n"));;
+				return NULL;
+			}
+		
+			if(mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+			   mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE)
+			{
+				T(YAFFS_TRACE_ALWAYS,("yaffs: MTD device does not support have the right page sizes\n"));
+				return NULL;
+			}		}
+		else
+		{
+			// Check for V1 style functions
+			if(!mtd->erase ||
+			   !mtd->read  ||
+			   !mtd->write ||
+#ifndef CONFIG_YAFFS_USE_OLD_MTD
+			   !mtd->write_ecc ||
+			   !mtd->read_ecc ||
+#endif
+			   !mtd->read_oob ||
+			   !mtd->write_oob )
+			{
+				T(YAFFS_TRACE_ALWAYS,("yaffs: MTD device does not support required functions\n"));;
+				return NULL;
+			}
+		
+			if(mtd->oobblock != YAFFS_BYTES_PER_CHUNK ||
+			   mtd->oobsize != YAFFS_BYTES_PER_SPARE)
+			{
+				T(YAFFS_TRACE_ALWAYS,("yaffs: MTD device does not support have the right page sizes\n"));
+				return NULL;
+			}
+		}
+		   
+
+			// OK, so if we got here, we have an MTD that's NAND and looks 
+			// like it has the right capabilities
+			// Set the yaffs_Device up for mtd
+
+//#if defined(CONFIG_KERNEL_2_5)
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+		sb->s_fs_info =	dev = kmalloc(sizeof(yaffs_Device),GFP_KERNEL);
+#else
+		sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device),GFP_KERNEL);
+#endif
+		if(!dev)
+		{
+			// Deep shit could not allocate device structure
+			T(YAFFS_TRACE_ALWAYS,("yaffs_read_super: Failed trying to allocate yaffs_Device. \n"));
+			return NULL;
+		}
+
+		memset(dev,0,sizeof(yaffs_Device));
+		dev->genericDevice = mtd; 
+
+		// Set up the memory size parameters....
+		
+		nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
+		dev->startBlock = 1;  // Don't use block 0
+		dev->endBlock = nBlocks - 1;
+		dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
+		dev->nBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+		dev->nReservedBlocks = 5;
+		dev->nShortOpCaches = 10; // Enable short op caching
+		
+
+		// ... and the functions.
+		if(yaffsVersion == 2)
+		{
+			dev->writeChunkWithTagsToNAND = nandmtd2_WriteChunkWithTagsToNAND;
+			dev->readChunkWithTagsFromNAND = nandmtd2_ReadChunkWithTagsFromNAND;
+			dev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad;
+			dev->queryNANDBlock = nandmtd2_QueryNANDBlock;
+			dev->spareBuffer = YMALLOC(mtd->oobsize);
+			dev->isYaffs2 = 1;
+			dev->nBytesPerChunk = mtd->oobblock;
+			dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
+			nBlocks = mtd->size / mtd->erasesize;
+			dev->startBlock = 1;  // Don't use block 0
+			dev->endBlock = nBlocks - 1;
+		}
+		else
+		{
+			dev->writeChunkToNAND = nandmtd_WriteChunkToNAND;
+			dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
+			dev->isYaffs2 = 0;
+		}
+		// ... and common functions
+		dev->eraseBlockInNAND = nandmtd_EraseBlockInNAND;
+		dev->initialiseNAND = nandmtd_InitialiseNAND;
+		
+		dev->putSuperFunc = yaffs_MTDPutSuper;
+		
+#ifdef CONFIG_YAFFS_USE_NANDECC
+		dev->useNANDECC = 1;
+#endif
+
+		yaffs_dev = dev;
+		
+#endif
+	}
+
+	init_MUTEX(&dev->grossLock);
+	
+	
+	yaffs_GrossLock(dev);
+	
+	err = yaffs_GutsInitialise(dev);
+
+	T(YAFFS_TRACE_OS,("yaffs_read_super: guts initialised %s\n", (err == YAFFS_OK) ? "OK" : "FAILED"));
+
+	// Create root inode
+	if(err == YAFFS_OK)
+	  inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0,yaffs_Root(dev));
+
+	yaffs_GrossUnlock(dev);
+
+	if (!inode)
+		return NULL;
+		
+// added NCB
+	inode->i_op = & yaffs_dir_inode_operations;
+	inode->i_fop = & yaffs_dir_operations;
+
+	T(YAFFS_TRACE_OS,("yaffs_read_super: got root inode\n"));
+		
+
+	root = d_alloc_root(inode);
+
+	T(YAFFS_TRACE_OS,("yaffs_read_super: d_alloc_root done\n"));
+
+	if (!root) {
+		iput(inode);
+		return NULL;
+	}
+	sb->s_root = root;
+
+	T(YAFFS_TRACE_OS,("yaffs_read_super: done\n"));
+	return sb;
+}
+
+
+static int yaffs_internal_read_super_ram(struct super_block * sb, void * data, int silent)
+{
+	 return yaffs_internal_read_super(1,1,sb,data,silent) ? 0 : -1;
+}
+static int yaffs_internal_read_super_mtd(struct super_block * sb, void * data, int silent)
+{
+	 return yaffs_internal_read_super(1,0,sb,data,silent) ? 0 : -1;
+}
+
+static int yaffs2_internal_read_super_ram(struct super_block * sb, void * data, int silent)
+{
+	 return yaffs_internal_read_super(2,1,sb,data,silent) ? 0 : -1;
+}
+static int yaffs2_internal_read_super_mtd(struct super_block * sb, void * data, int silent)
+{
+	 return yaffs_internal_read_super(2,0,sb,data,silent) ? 0 : -1;
+}
+
+
+
+#ifdef CONFIG_YAFFS_MTD_ENABLED
+//#if defined(CONFIG_KERNEL_2_5)
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static struct super_block *yaffs_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data)
+{
+
+    return get_sb_bdev(fs, flags, dev_name, data, yaffs_internal_read_super_mtd);
+}
+
+/* changes NCB 2.5.70 */
+//static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, FS_REQUIRES_DEV);
+static struct file_system_type yaffs_fs_type = {
+	.owner		= THIS_MODULE,
+	.name		= "yaffs",
+	.get_sb		= yaffs_read_super,
+//	.kill_sb	= kill_block_super,
+	.kill_sb	= kill_litter_super,
+	.fs_flags	= FS_REQUIRES_DEV,
+};
+#else
+static struct super_block *yaffs_read_super(struct super_block * sb, void * data, int silent)
+{
+	return yaffs_internal_read_super(1,0,sb,data,silent);
+}
+
+static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, FS_REQUIRES_DEV);
+#endif
+
+#endif // CONFIG_YAFFS_MTD_ENABLED
+
+#ifdef CONFIG_YAFFS2_MTD_ENABLED
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static struct super_block *yaffs2_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data)
+{
+
+    return get_sb_bdev(fs, flags, dev_name, data, yaffs2_internal_read_super_mtd);
+}
+
+/* changes NCB 2.5.70 */
+//static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, FS_REQUIRES_DEV);
+static struct file_system_type yaffs2_fs_type = {
+	.owner		= THIS_MODULE,
+	.name		= "yaffs2",
+	.get_sb		= yaffs2_read_super,
+//	.kill_sb	= kill_block_super,
+	.kill_sb	= kill_litter_super,
+	.fs_flags	= FS_REQUIRES_DEV,
+};
+#else
+static struct super_block *yaffs2_read_super(struct super_block * sb, void * data, int silent)
+{
+	return yaffs_internal_read_super(2,0,sb,data,silent);
+}
+
+static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, FS_REQUIRES_DEV);
+#endif
+
+#endif // CONFIG_YAFFS2_MTD_ENABLED
+
+
+#ifdef CONFIG_YAFFS_RAM_ENABLED
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static struct super_block *yaffs_ram_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data)
+{
+
+    return get_sb_bdev(fs, flags, dev_name, data, yaffs_internal_read_super_ram);
+}
+
+
+static struct file_system_type yaffs_ram_fs_type = {
+	.owner		= THIS_MODULE,
+	.name		= "yaffsram",
+	.get_sb		= yaffs_ram_read_super,
+//	.kill_sb	= kill_block_super,
+	.kill_sb	= kill_litter_super,
+	.fs_flags	= FS_SINGLE,
+};
+#else
+static struct super_block *yaffs_ram_read_super(struct super_block * sb, void * data, int silent)
+{
+	return yaffs_internal_read_super(1,1,sb,data,silent);
+}
+
+static DECLARE_FSTYPE(yaffs_ram_fs_type, "yaffsram", yaffs_ram_read_super, FS_SINGLE);
+#endif
+
+#endif // CONFIG_YAFFS_RAM_ENABLED
+
+#ifdef CONFIG_YAFFS2_RAM_ENABLED
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+static struct super_block *yaffs2_ram_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data)
+{
+
+    return get_sb_bdev(fs, flags, dev_name, data, yaffs2_internal_read_super_ram);
+}
+
+
+static struct file_system_type yaffs2_ram_fs_type = {
+	.owner		= THIS_MODULE,
+	.name		= "yaffs2ram",
+	.get_sb		= yaffs2_ram_read_super,
+//	.kill_sb	= kill_block_super,
+	.kill_sb	= kill_litter_super,
+	.fs_flags	= FS_SINGLE,
+};
+#else
+static struct super_block *yaffs2_ram_read_super(struct super_block * sb, void * data, int silent)
+{
+	return yaffs_internal_read_super(2,1,sb,data,silent);
+}
+
+static DECLARE_FSTYPE(yaffs2_ram_fs_type, "yaffs2ram", yaffs2_ram_read_super, FS_SINGLE);
+#endif
+
+#endif // CONFIG_YAFFS2_RAM_ENABLED
+
+
+
+static struct proc_dir_entry *my_proc_entry;
+static struct proc_dir_entry *my_proc_ram_write_entry;
+
+static char * yaffs_dump_dev(char *buf,yaffs_Device *dev,char *name)
+{
+	buf +=sprintf(buf,"\nDevice %s\n",name);
+	buf +=sprintf(buf,"startBlock......... %d\n",dev->startBlock);
+	buf +=sprintf(buf,"endBlock........... %d\n",dev->endBlock);
+	buf +=sprintf(buf,"chunkGroupBits..... %d\n",dev->chunkGroupBits);
+	buf +=sprintf(buf,"chunkGroupSize..... %d\n",dev->chunkGroupSize);
+	buf +=sprintf(buf,"nErasedBlocks...... %d\n",dev->nErasedBlocks);
+	buf +=sprintf(buf,"nTnodesCreated..... %d\n",dev->nTnodesCreated);
+	buf +=sprintf(buf,"nFreeTnodes........ %d\n",dev->nFreeTnodes);
+	buf +=sprintf(buf,"nObjectsCreated.... %d\n",dev->nObjectsCreated);
+	buf +=sprintf(buf,"nFreeObjects....... %d\n",dev->nFreeObjects);
+	buf +=sprintf(buf,"nFreeChunks........ %d\n",dev->nFreeChunks);
+	buf +=sprintf(buf,"nPageWrites........ %d\n",dev->nPageWrites);
+	buf +=sprintf(buf,"nPageReads......... %d\n",dev->nPageReads);
+	buf +=sprintf(buf,"nBlockErasures..... %d\n",dev->nBlockErasures);
+	buf +=sprintf(buf,"nGCCopies.......... %d\n",dev->nGCCopies);
+	buf +=sprintf(buf,"garbageCollections. %d\n",dev->garbageCollections);
+	buf +=sprintf(buf,"passiveGCs......... %d\n",dev->passiveGarbageCollections);
+	buf +=sprintf(buf,"nRetriedWrites..... %d\n",dev->nRetriedWrites);
+	buf +=sprintf(buf,"nRetireBlocks...... %d\n",dev->nRetiredBlocks);
+	buf +=sprintf(buf,"eccFixed........... %d\n",dev->eccFixed);
+	buf +=sprintf(buf,"eccUnfixed......... %d\n",dev->eccUnfixed);
+	buf +=sprintf(buf,"tagsEccFixed....... %d\n",dev->tagsEccFixed);
+	buf +=sprintf(buf,"tagsEccUnfixed..... %d\n",dev->tagsEccUnfixed);
+	buf +=sprintf(buf,"cacheHits.......... %d\n",dev->cacheHits);
+	buf +=sprintf(buf,"nDeletedFiles...... %d\n",dev->nDeletedFiles);
+	buf +=sprintf(buf,"nUnlinkedFiles..... %d\n",dev->nUnlinkedFiles);
+	buf +=sprintf(buf,"nBackgroudDeletions %d\n",dev->nBackgroundDeletions);
+	buf +=sprintf(buf,"useNANDECC......... %d\n",dev->useNANDECC);
+	buf +=sprintf(buf,"isYaffs2........... %d\n",dev->isYaffs2);
+
+	
+	return buf;	
+}
+
+static int  yaffs_proc_read(
+        char *page,
+	char **start,
+	off_t offset,
+	int count,
+	int *eof,
+	void *data
+	)
+{
+
+	char my_buffer[3000];
+	char *buf;
+	buf = my_buffer;
+
+	if (offset > 0) return 0;
+
+	/* Fill the buffer and get its length */
+	buf +=sprintf(buf,"YAFFS built:"__DATE__ " "__TIME__"\n%s\n%s\n", yaffs_fs_c_version,yaffs_guts_c_version);
+	
+	if(yaffs_dev) buf = yaffs_dump_dev(buf,yaffs_dev,"yaffs");
+	if(yaffsram_dev) buf = yaffs_dump_dev(buf,yaffsram_dev,"yaffsram");
+	
+
+	strcpy(page,my_buffer);
+	return strlen(my_buffer);
+}
+
+
+static int  yaffs_proc_ram_write(
+        char *page,
+	char **start,
+	off_t offset,
+	int count,
+	int *eof,
+	void *data
+	)
+{
+
+	printk(KERN_DEBUG "yaffs write size %d\n",count);
+	return count;
+}
+
+
+
+// Stuff to handle installation of file systems
+struct file_system_to_install
+{
+   struct file_system_type *fst;
+   int installed;
+};
+
+static struct file_system_to_install fs_to_install[] =
+{
+#ifdef CONFIG_YAFFS_RAM_ENABLED
+     { &yaffs_ram_fs_type, 0},
+#endif
+#ifdef CONFIG_YAFFS2_RAM_ENABLED
+     { &yaffs2_ram_fs_type,0},
+#endif
+#ifdef CONFIG_YAFFS_MTD_ENABLED
+     { &yaffs_fs_type,0},
+#endif
+#ifdef CONFIG_YAFFS2_MTD_ENABLED
+     { &yaffs2_fs_type,0},
+#endif
+     { NULL,0}
+};
+
+static int __init init_yaffs_fs(void)
+{
+	int error = 0;
+	struct file_system_to_install *fsinst;	
+	
+	yaffs_dev = yaffsram_dev = NULL;
+	
+   T(YAFFS_TRACE_ALWAYS,("yaffs " __DATE__ " " __TIME__ " Installing. \n"));
+
+
+
+    /* Install the proc_fs entry */
+    my_proc_entry = create_proc_read_entry("yaffs",
+                                           S_IRUGO | S_IFREG,
+					   &proc_root,
+					   yaffs_proc_read,
+					   NULL);
+    if(!my_proc_entry)
+    {
+       return -ENOMEM;
+    }
+    
+    
+
+    // Now add the file system entries
+    
+    fsinst = fs_to_install;
+    
+    while(fsinst->fst && !error)
+    {
+      error = register_filesystem(fsinst->fst);
+      if(!error)
+      {
+          fsinst->installed = 1;
+      }
+      fsinst++;
+    }
+   
+    // Any errors? uninstall 
+    if(error)
+    {
+    	    fsinst = fs_to_install;
+    	    
+	    while(fsinst->fst)
+	    {
+	      if(fsinst->installed)
+	      {
+	        unregister_filesystem(fsinst->fst);
+	        fsinst->installed = 0;
+	      }
+	      fsinst++;
+	    }
+    }
+    
+    return error;
+}
+
+static void __exit exit_yaffs_fs(void)
+{
+
+   struct file_system_to_install *fsinst;
+   
+   T(YAFFS_TRACE_ALWAYS,("yaffs " __DATE__ " " __TIME__ " removing. \n"));
+
+   remove_proc_entry("yaffs",&proc_root);
+    
+    fsinst = fs_to_install;
+    
+    while(fsinst->fst)
+    {
+      if(fsinst->installed)
+      {
+        unregister_filesystem(fsinst->fst);
+        fsinst->installed = 0;
+      }
+      fsinst++;
+    }
+
+}
+
+module_init(init_yaffs_fs)
+module_exit(exit_yaffs_fs)
+
+MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system");
+MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002,2003,2004");
+MODULE_LICENSE("GPL");
+