generic: fold yaffs_git_2010_10_20 patch to generic/files

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 34013

target/linux/generic/files/fs/yaffs2/Kconfig

@@ -90,23 +90,15 @@ config YAFFS_AUTO_YAFFS2
 
 	  If unsure, say Y.
 
-config YAFFS_DISABLE_LAZY_LOAD
-	bool "Disable lazy loading"
-	depends on YAFFS_YAFFS2
+config YAFFS_DISABLE_TAGS_ECC
+	bool "Disable YAFFS from doing ECC on tags by default"
+	depends on YAFFS_FS && YAFFS_YAFFS2
 	default n
 	help
-	  "Lazy loading" defers loading file details until they are
-	  required. This saves mount time, but makes the first look-up
-	  a bit longer.
-
-	  Lazy loading will only happen if enabled by this option being 'n'
-	  and if the appropriate tags are available, else yaffs2 will
-	  automatically fall back to immediate loading and do the right
-	  thing.
-
-	  Lazy laoding will be required by checkpointing.
-
-	  Setting this to 'y' will disable lazy loading.
+	  This defaults Yaffs to using its own ECC calculations on tags instead of
+	  just relying on the MTD.
+	  This behavior can also be overridden with tags_ecc_on and
+	  tags_ecc_off mount options.
 
 	  If unsure, say N.
 
@@ -154,3 +146,45 @@ config YAFFS_SHORT_NAMES_IN_RAM
 	  but makes look-ups faster.
 
 	  If unsure, say Y.
+
+config YAFFS_EMPTY_LOST_AND_FOUND
+	bool "Empty lost and found on boot"
+	depends on YAFFS_FS
+	default n
+	help
+	  If this is enabled then the contents of lost and found is
+	  automatically dumped at mount.
+
+	  If unsure, say N.
+
+config YAFFS_DISABLE_BLOCK_REFRESHING
+	bool "Disable yaffs2 block refreshing"
+	depends on YAFFS_FS
+	default n
+	help
+	 If this is set, then block refreshing is disabled.
+	 Block refreshing infrequently refreshes the oldest block in
+	 a yaffs2 file system. This mechanism helps to refresh flash to
+	 mitigate against data loss. This is particularly useful for MLC.
+
+	  If unsure, say N.
+
+config YAFFS_DISABLE_BACKGROUND
+	bool "Disable yaffs2 background processing"
+	depends on YAFFS_FS
+	default n
+	help
+	 If this is set, then background processing is disabled.
+	 Background processing makes many foreground activities faster.
+
+	  If unsure, say N.
+
+config YAFFS_XATTR
+	bool "Enable yaffs2 xattr support"
+	depends on YAFFS_FS
+	default y
+	help
+	 If this is set then yaffs2 will provide xattr support.
+	 If unsure, say Y.
+
+

target/linux/generic/files/fs/yaffs2/Makefile

@@ -4,7 +4,14 @@
 
 obj-$(CONFIG_YAFFS_FS) += yaffs.o
 
-yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o
-yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
+yaffs-y := yaffs_ecc.o yaffs_vfs_glue.o yaffs_guts.o yaffs_checkptrw.o
+yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o
 yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
 yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
+yaffs-y += yaffs_nameval.o
+yaffs-y += yaffs_allocator.o
+yaffs-y += yaffs_yaffs1.o
+yaffs-y += yaffs_yaffs2.o
+yaffs-y += yaffs_bitmap.o
+yaffs-y += yaffs_verify.o
+

target/linux/generic/files/fs/yaffs2/NOTE.openwrt

@@ -1,4 +1,4 @@
-The yaffs2 source has been fetched from the yaffs2 CVS tree.
+The yaffs2 source has been fetched from the yaffs2 GIT tree.
 
-URL: cvs.aleph1.co.uk
-Version: 2009-09-24
+URL: git://www.aleph1.co.uk/yaffs2
+Version: 7396445d7d0d13469b9505791114b9dc6b76ffe4 (2010-10-20)

target/linux/generic/files/fs/yaffs2/devextras.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -24,6 +24,8 @@
 #define __EXTRAS_H__
 
 
+#include "yportenv.h"
+
 #if !(defined __KERNEL__)
 
 /* Definition of types */
@@ -33,103 +35,6 @@ typedef unsigned __u32;
 
 #endif
 
-/*
- * This is a simple doubly linked list implementation that matches the
- * way the Linux kernel doubly linked list implementation works.
- */
-
-struct ylist_head {
-	struct ylist_head *next; /* next in chain */
-	struct ylist_head *prev; /* previous in chain */
-};
-
-
-/* Initialise a static list */
-#define YLIST_HEAD(name) \
-struct ylist_head name = { &(name), &(name)}
-
-
-
-/* Initialise a list head to an empty list */
-#define YINIT_LIST_HEAD(p) \
-do { \
-	(p)->next = (p);\
-	(p)->prev = (p); \
-} while (0)
-
-
-/* Add an element to a list */
-static __inline__ void ylist_add(struct ylist_head *newEntry,
-				struct ylist_head *list)
-{
-	struct ylist_head *listNext = list->next;
-
-	list->next = newEntry;
-	newEntry->prev = list;
-	newEntry->next = listNext;
-	listNext->prev = newEntry;
-
-}
-
-static __inline__ void ylist_add_tail(struct ylist_head *newEntry,
-				 struct ylist_head *list)
-{
-	struct ylist_head *listPrev = list->prev;
-
-	list->prev = newEntry;
-	newEntry->next = list;
-	newEntry->prev = listPrev;
-	listPrev->next = newEntry;
-
-}
-
-
-/* Take an element out of its current list, with or without
- * reinitialising the links.of the entry*/
-static __inline__ void ylist_del(struct ylist_head *entry)
-{
-	struct ylist_head *listNext = entry->next;
-	struct ylist_head *listPrev = entry->prev;
-
-	listNext->prev = listPrev;
-	listPrev->next = listNext;
-
-}
-
-static __inline__ void ylist_del_init(struct ylist_head *entry)
-{
-	ylist_del(entry);
-	entry->next = entry->prev = entry;
-}
-
-
-/* Test if the list is empty */
-static __inline__ int ylist_empty(struct ylist_head *entry)
-{
-	return (entry->next == entry);
-}
-
-
-/* ylist_entry takes a pointer to a list entry and offsets it to that
- * we can find a pointer to the object it is embedded in.
- */
-
-
-#define ylist_entry(entry, type, member) \
-	((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member)))
-
-
-/* ylist_for_each and list_for_each_safe  iterate over lists.
- * ylist_for_each_safe uses temporary storage to make the list delete safe
- */
-
-#define ylist_for_each(itervar, list) \
-	for (itervar = (list)->next; itervar != (list); itervar = itervar->next)
-
-#define ylist_for_each_safe(itervar, saveVar, list) \
-	for (itervar = (list)->next, saveVar = (list)->next->next; \
-		itervar != (list); itervar = saveVar, saveVar = saveVar->next)
-
 
 #if !(defined __KERNEL__)
 

target/linux/generic/files/fs/yaffs2/moduleconfig.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Martin Fouts <Martin.Fouts@palmsource.com>
@@ -29,25 +29,46 @@
 /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
 /* #define CONFIG_YAFFS_DOES_ECC */
 
+/* Default: Selected */
+/* Meaning: Yaffs does its own ECC on tags for packed tags rather than use mtd */
+#define CONFIG_YAFFS_DOES_TAGS_ECC
+
 /* Default: Not selected */
 /* Meaning: ECC byte order is 'wrong'.  Only meaningful if */
 /*          CONFIG_YAFFS_DOES_ECC is set */
 /* #define CONFIG_YAFFS_ECC_WRONG_ORDER */
 
-/* Default: Selected */
-/* Meaning: Disables testing whether chunks are erased before writing to them*/
-#define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK
+/* Default: Not selected */
+/* Meaning: Always test whether chunks are erased before writing to them.
+	    Use during mtd debugging and init. */
+/* #define CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED */
+
+/* Default: Not Selected */
+/* Meaning: At mount automatically empty all files from lost and found. */
+/* This is done to fix an old problem where rmdir was not checking for an */
+/* empty directory. This can also be achieved with a mount option. */
+#define CONFIG_YAFFS_EMPTY_LOST_AND_FOUND
 
 /* Default: Selected */
 /* Meaning: Cache short names, taking more RAM, but faster look-ups */
 #define CONFIG_YAFFS_SHORT_NAMES_IN_RAM
 
-/* Default: 10 */
-/* Meaning: set the count of blocks to reserve for checkpointing */
-#define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10
+/* Default: Unselected */
+/* Meaning: Select to disable block refreshing. */
+/* Block Refreshing periodically rewrites the oldest block. */
+/* #define CONFIG_DISABLE_BLOCK_REFRESHING */
+
+/* Default: Unselected */
+/* Meaning: Select to disable background processing */
+/* #define CONFIG_DISABLE_BACKGROUND */
+
+
+/* Default: Selected */
+/* Meaning: Enable XATTR support */
+#define CONFIG_YAFFS_XATTR
 
 /*
-Older-style on-NAND data format has a "pageStatus" byte to record
+Older-style on-NAND data format has a "page_status" byte to record
 chunk/page state.  This byte is zeroed when the page is discarded.
 Choose this option if you have existing on-NAND data in this format
 that you need to continue to support.  New data written also uses the
@@ -57,7 +78,7 @@ adjusted to use the older-style format.  See notes on tags formats and
 MTD versions in yaffs_mtdif1.c.
 */
 /* Default: Not selected */
-/* Meaning: Use older-style on-NAND data format with pageStatus byte */
+/* Meaning: Use older-style on-NAND data format with page_status byte */
 /* #define CONFIG_YAFFS_9BYTE_TAGS */
 
 #endif /* YAFFS_OUT_OF_TREE */

target/linux/generic/files/fs/yaffs2/yaffs_allocator.c

@@ -0,0 +1,409 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+
+#include "yaffs_allocator.h"
+#include "yaffs_guts.h"
+#include "yaffs_trace.h"
+#include "yportenv.h"
+
+#ifdef CONFIG_YAFFS_YMALLOC_ALLOCATOR
+
+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
+{
+	dev = dev;
+}
+
+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
+{
+	dev = dev;
+}
+
+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
+{
+	return (yaffs_tnode_t *)YMALLOC(dev->tnode_size);
+}
+
+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
+{
+	dev = dev;
+	YFREE(tn);
+}
+
+void yaffs_init_raw_objs(yaffs_dev_t *dev)
+{
+	dev = dev;
+}
+
+void yaffs_deinit_raw_objs(yaffs_dev_t *dev)
+{
+	dev = dev;
+}
+
+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
+{
+	dev = dev;
+	return (yaffs_obj_t *) YMALLOC(sizeof(yaffs_obj_t));
+}
+
+
+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
+{
+
+	dev = dev;
+	YFREE(obj);
+}
+
+#else
+
+struct yaffs_tnode_list {
+	struct yaffs_tnode_list *next;
+	yaffs_tnode_t *tnodes;
+};
+
+typedef struct yaffs_tnode_list yaffs_tnodelist_t;
+
+struct yaffs_obj_tList_struct {
+	yaffs_obj_t *objects;
+	struct yaffs_obj_tList_struct *next;
+};
+
+typedef struct yaffs_obj_tList_struct yaffs_obj_tList;
+
+
+struct yaffs_AllocatorStruct {
+	int n_tnodesCreated;
+	yaffs_tnode_t *freeTnodes;
+	int nFreeTnodes;
+	yaffs_tnodelist_t *allocatedTnodeList;
+
+	int n_objCreated;
+	yaffs_obj_t *freeObjects;
+	int nFreeObjects;
+
+	yaffs_obj_tList *allocatedObjectList;
+};
+
+typedef struct yaffs_AllocatorStruct yaffs_Allocator;
+
+
+static void yaffs_deinit_raw_tnodes(yaffs_dev_t *dev)
+{
+
+	yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
+
+	yaffs_tnodelist_t *tmp;
+
+	if(!allocator){
+		YBUG();
+		return;
+	}
+
+	while (allocator->allocatedTnodeList) {
+		tmp = allocator->allocatedTnodeList->next;
+
+		YFREE(allocator->allocatedTnodeList->tnodes);
+		YFREE(allocator->allocatedTnodeList);
+		allocator->allocatedTnodeList = tmp;
+
+	}
+
+	allocator->freeTnodes = NULL;
+	allocator->nFreeTnodes = 0;
+	allocator->n_tnodesCreated = 0;
+}
+
+static void yaffs_init_raw_tnodes(yaffs_dev_t *dev)
+{
+	yaffs_Allocator *allocator = dev->allocator;
+
+	if(allocator){
+		allocator->allocatedTnodeList = NULL;
+		allocator->freeTnodes = NULL;
+		allocator->nFreeTnodes = 0;
+		allocator->n_tnodesCreated = 0;
+	} else
+		YBUG();
+}
+
+static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes)
+{
+	yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
+	int i;
+	yaffs_tnode_t *newTnodes;
+	__u8 *mem;
+	yaffs_tnode_t *curr;
+	yaffs_tnode_t *next;
+	yaffs_tnodelist_t *tnl;
+
+	if(!allocator){
+		YBUG();
+		return YAFFS_FAIL;
+	}
+
+	if (n_tnodes < 1)
+		return YAFFS_OK;
+
+
+	/* make these things */
+
+	newTnodes = YMALLOC(n_tnodes * dev->tnode_size);
+	mem = (__u8 *)newTnodes;
+
+	if (!newTnodes) {
+		T(YAFFS_TRACE_ERROR,
+			(TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
+		return YAFFS_FAIL;
+	}
+
+	/* New hookup for wide tnodes */
+	for (i = 0; i < n_tnodes - 1; i++) {
+		curr = (yaffs_tnode_t *) &mem[i * dev->tnode_size];
+		next = (yaffs_tnode_t *) &mem[(i+1) * dev->tnode_size];
+		curr->internal[0] = next;
+	}
+
+	curr = (yaffs_tnode_t *) &mem[(n_tnodes - 1) * dev->tnode_size];
+	curr->internal[0] = allocator->freeTnodes;
+	allocator->freeTnodes = (yaffs_tnode_t *)mem;
+
+	allocator->nFreeTnodes += n_tnodes;
+	allocator->n_tnodesCreated += n_tnodes;
+
+	/* Now add this bunch of tnodes to a list for freeing up.
+	 * NB If we can't add this to the management list it isn't fatal
+	 * but it just means we can't free this bunch of tnodes later.
+	 */
+
+	tnl = YMALLOC(sizeof(yaffs_tnodelist_t));
+	if (!tnl) {
+		T(YAFFS_TRACE_ERROR,
+		  (TSTR
+		   ("yaffs: Could not add tnodes to management list" TENDSTR)));
+		   return YAFFS_FAIL;
+	} else {
+		tnl->tnodes = newTnodes;
+		tnl->next = allocator->allocatedTnodeList;
+		allocator->allocatedTnodeList = tnl;
+	}
+
+	T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR)));
+
+	return YAFFS_OK;
+}
+
+
+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
+{
+	yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
+	yaffs_tnode_t *tn = NULL;
+
+	if(!allocator){
+		YBUG();
+		return NULL;
+	}
+
+	/* If there are none left make more */
+	if (!allocator->freeTnodes)
+		yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES);
+
+	if (allocator->freeTnodes) {
+		tn = allocator->freeTnodes;
+		allocator->freeTnodes = allocator->freeTnodes->internal[0];
+		allocator->nFreeTnodes--;
+	}
+
+	return tn;
+}
+
+/* FreeTnode frees up a tnode and puts it back on the free list */
+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
+{
+	yaffs_Allocator *allocator = dev->allocator;
+
+	if(!allocator){
+		YBUG();
+		return;
+	}
+
+	if (tn) {
+		tn->internal[0] = allocator->freeTnodes;
+		allocator->freeTnodes = tn;
+		allocator->nFreeTnodes++;
+	}
+	dev->checkpoint_blocks_required = 0; /* force recalculation*/
+}
+
+
+
+static void yaffs_init_raw_objs(yaffs_dev_t *dev)
+{
+	yaffs_Allocator *allocator = dev->allocator;
+
+	if(allocator) {
+		allocator->allocatedObjectList = NULL;
+		allocator->freeObjects = NULL;
+		allocator->nFreeObjects = 0;
+	} else
+		YBUG();
+}
+
+static void yaffs_deinit_raw_objs(yaffs_dev_t *dev)
+{
+	yaffs_Allocator *allocator = dev->allocator;
+	yaffs_obj_tList *tmp;
+
+	if(!allocator){
+		YBUG();
+		return;
+	}
+
+	while (allocator->allocatedObjectList) {
+		tmp = allocator->allocatedObjectList->next;
+		YFREE(allocator->allocatedObjectList->objects);
+		YFREE(allocator->allocatedObjectList);
+
+		allocator->allocatedObjectList = tmp;
+	}
+
+	allocator->freeObjects = NULL;
+	allocator->nFreeObjects = 0;
+	allocator->n_objCreated = 0;
+}
+
+
+static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj)
+{
+	yaffs_Allocator *allocator = dev->allocator;
+
+	int i;
+	yaffs_obj_t *newObjects;
+	yaffs_obj_tList *list;
+
+	if(!allocator){
+		YBUG();
+		return YAFFS_FAIL;
+	}
+
+	if (n_obj < 1)
+		return YAFFS_OK;
+
+	/* make these things */
+	newObjects = YMALLOC(n_obj * sizeof(yaffs_obj_t));
+	list = YMALLOC(sizeof(yaffs_obj_tList));
+
+	if (!newObjects || !list) {
+		if (newObjects){
+			YFREE(newObjects);
+			newObjects = NULL;
+		}
+		if (list){
+			YFREE(list);
+			list = NULL;
+		}
+		T(YAFFS_TRACE_ALLOCATE,
+		  (TSTR("yaffs: Could not allocate more objects" TENDSTR)));
+		return YAFFS_FAIL;
+	}
+
+	/* Hook them into the free list */
+	for (i = 0; i < n_obj - 1; i++) {
+		newObjects[i].siblings.next =
+				(struct ylist_head *)(&newObjects[i + 1]);
+	}
+
+	newObjects[n_obj - 1].siblings.next = (void *)allocator->freeObjects;
+	allocator->freeObjects = newObjects;
+	allocator->nFreeObjects += n_obj;
+	allocator->n_objCreated += n_obj;
+
+	/* Now add this bunch of Objects to a list for freeing up. */
+
+	list->objects = newObjects;
+	list->next = allocator->allocatedObjectList;
+	allocator->allocatedObjectList = list;
+
+	return YAFFS_OK;
+}
+
+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
+{
+	yaffs_obj_t *obj = NULL;
+	yaffs_Allocator *allocator = dev->allocator;
+
+	if(!allocator) {
+		YBUG();
+		return obj;
+	}
+
+	/* If there are none left make more */
+	if (!allocator->freeObjects)
+		yaffs_create_free_objs(dev, YAFFS_ALLOCATION_NOBJECTS);
+
+	if (allocator->freeObjects) {
+		obj = allocator->freeObjects;
+		allocator->freeObjects =
+			(yaffs_obj_t *) (allocator->freeObjects->siblings.next);
+		allocator->nFreeObjects--;
+	}
+
+	return obj;
+}
+
+
+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
+{
+
+	yaffs_Allocator *allocator = dev->allocator;
+
+	if(!allocator)
+		YBUG();
+	else {
+		/* Link into the free list. */
+		obj->siblings.next = (struct ylist_head *)(allocator->freeObjects);
+		allocator->freeObjects = obj;
+		allocator->nFreeObjects++;
+	}
+}
+
+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
+{
+	if(dev->allocator){
+		yaffs_deinit_raw_tnodes(dev);
+		yaffs_deinit_raw_objs(dev);
+
+		YFREE(dev->allocator);
+		dev->allocator=NULL;
+	} else
+		YBUG();
+}
+
+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
+{
+	yaffs_Allocator *allocator;
+
+	if(!dev->allocator){
+		allocator = YMALLOC(sizeof(yaffs_Allocator));
+		if(allocator){
+			dev->allocator = allocator;
+			yaffs_init_raw_tnodes(dev);
+			yaffs_init_raw_objs(dev);
+		}
+	} else
+		YBUG();
+}
+
+
+#endif

target/linux/generic/files/fs/yaffs2/yaffs_allocator.h

@@ -0,0 +1,30 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+#ifndef __YAFFS_ALLOCATOR_H__
+#define __YAFFS_ALLOCATOR_H__
+
+#include "yaffs_guts.h"
+
+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev);
+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev);
+
+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev);
+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn);
+
+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev);
+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj);
+
+#endif

target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c

@@ -0,0 +1,105 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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.
+ */
+
+#include "yaffs_bitmap.h"
+#include "yaffs_trace.h"
+/*
+ * Chunk bitmap manipulations
+ */
+
+static Y_INLINE __u8 *yaffs_BlockBits(yaffs_dev_t *dev, int blk)
+{
+	if (blk < dev->internal_start_block || blk > dev->internal_end_block) {
+		T(YAFFS_TRACE_ERROR,
+			(TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
+			blk));
+		YBUG();
+	}
+	return dev->chunk_bits +
+		(dev->chunk_bit_stride * (blk - dev->internal_start_block));
+}
+
+void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk)
+{
+	if (blk < dev->internal_start_block || blk > dev->internal_end_block ||
+			chunk < 0 || chunk >= dev->param.chunks_per_block) {
+		T(YAFFS_TRACE_ERROR,
+		(TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),
+			blk, chunk));
+		YBUG();
+	}
+}
+
+void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk)
+{
+	__u8 *blkBits = yaffs_BlockBits(dev, blk);
+
+	memset(blkBits, 0, dev->chunk_bit_stride);
+}
+
+void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk)
+{
+	__u8 *blkBits = yaffs_BlockBits(dev, blk);
+
+	yaffs_verify_chunk_bit_id(dev, blk, chunk);
+
+	blkBits[chunk / 8] &= ~(1 << (chunk & 7));
+}
+
+void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk)
+{
+	__u8 *blkBits = yaffs_BlockBits(dev, blk);
+
+	yaffs_verify_chunk_bit_id(dev, blk, chunk);
+
+	blkBits[chunk / 8] |= (1 << (chunk & 7));
+}
+
+int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk)
+{
+	__u8 *blkBits = yaffs_BlockBits(dev, blk);
+	yaffs_verify_chunk_bit_id(dev, blk, chunk);
+
+	return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
+}
+
+int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk)
+{
+	__u8 *blkBits = yaffs_BlockBits(dev, blk);
+	int i;
+	for (i = 0; i < dev->chunk_bit_stride; i++) {
+		if (*blkBits)
+			return 1;
+		blkBits++;
+	}
+	return 0;
+}
+
+int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk)
+{
+	__u8 *blkBits = yaffs_BlockBits(dev, blk);
+	int i;
+	int n = 0;
+	for (i = 0; i < dev->chunk_bit_stride; i++) {
+		__u8 x = *blkBits;
+		while (x) {
+			if (x & 1)
+				n++;
+			x >>= 1;
+		}
+
+		blkBits++;
+	}
+	return n;
+}
+

target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h

@@ -0,0 +1,31 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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.
+ */
+
+/*
+ * Chunk bitmap manipulations
+ */
+
+#ifndef __YAFFS_BITMAP_H__
+#define __YAFFS_BITMAP_H__
+
+#include "yaffs_guts.h"
+
+void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk);
+void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk);
+void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk);
+void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk);
+int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk);
+int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk);
+int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk);
+
+#endif

target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -11,16 +11,12 @@
  * published by the Free Software Foundation.
  */
 
-const char *yaffs_checkptrw_c_version =
-	"$Id: yaffs_checkptrw.c,v 1.18 2009-03-06 17:20:49 wookey Exp $";
-
-
 #include "yaffs_checkptrw.h"
 #include "yaffs_getblockinfo.h"
 
-static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
+static int yaffs2_checkpt_space_ok(yaffs_dev_t *dev)
 {
-	int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
+	int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks;
 
 	T(YAFFS_TRACE_CHECKPOINT,
 		(TSTR("checkpt blocks available = %d" TENDSTR),
@@ -30,53 +26,56 @@ static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
 }
 
 
-static int yaffs_CheckpointErase(yaffs_Device *dev)
+static int yaffs_checkpt_erase(yaffs_dev_t *dev)
 {
 	int i;
 
-	if (!dev->eraseBlockInNAND)
+	if (!dev->param.erase_fn)
 		return 0;
 	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR),
-		dev->internalStartBlock, dev->internalEndBlock));
+		dev->internal_start_block, dev->internal_end_block));
 
-	for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
-		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
-		if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) {
+	for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
+		yaffs_block_info_t *bi = yaffs_get_block_info(dev, i);
+		if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) {
 			T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i));
-			if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) {
-				bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
-				dev->nErasedBlocks++;
-				dev->nFreeChunks += dev->nChunksPerBlock;
+
+			dev->n_erasures++;
+
+			if (dev->param.erase_fn(dev, i - dev->block_offset /* realign */)) {
+				bi->block_state = YAFFS_BLOCK_STATE_EMPTY;
+				dev->n_erased_blocks++;
+				dev->n_free_chunks += dev->param.chunks_per_block;
 			} else {
-				dev->markNANDBlockBad(dev, i);
-				bi->blockState = YAFFS_BLOCK_STATE_DEAD;
+				dev->param.bad_block_fn(dev, i);
+				bi->block_state = YAFFS_BLOCK_STATE_DEAD;
 			}
 		}
 	}
 
-	dev->blocksInCheckpoint = 0;
+	dev->blocks_in_checkpt = 0;
 
 	return 1;
 }
 
 
-static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev)
+static void yaffs2_checkpt_find_erased_block(yaffs_dev_t *dev)
 {
 	int  i;
-	int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
+	int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks;
 	T(YAFFS_TRACE_CHECKPOINT,
 		(TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR),
-		dev->nErasedBlocks, dev->nReservedBlocks, blocksAvailable, dev->checkpointNextBlock));
+		dev->n_erased_blocks, dev->param.n_reserved_blocks, blocksAvailable, dev->checkpt_next_block));
 
-	if (dev->checkpointNextBlock >= 0 &&
-			dev->checkpointNextBlock <= dev->internalEndBlock &&
+	if (dev->checkpt_next_block >= 0 &&
+			dev->checkpt_next_block <= dev->internal_end_block &&
 			blocksAvailable > 0) {
 
-		for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
-			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
-			if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) {
-				dev->checkpointNextBlock = i + 1;
-				dev->checkpointCurrentBlock = i;
+		for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) {
+			yaffs_block_info_t *bi = yaffs_get_block_info(dev, i);
+			if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) {
+				dev->checkpt_next_block = i + 1;
+				dev->checkpt_cur_block = i;
 				T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i));
 				return;
 			}
@@ -84,34 +83,34 @@ static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev)
 	}
 	T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR)));
 
-	dev->checkpointNextBlock = -1;
-	dev->checkpointCurrentBlock = -1;
+	dev->checkpt_next_block = -1;
+	dev->checkpt_cur_block = -1;
 }
 
-static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev)
+static void yaffs2_checkpt_find_block(yaffs_dev_t *dev)
 {
 	int  i;
-	yaffs_ExtendedTags tags;
+	yaffs_ext_tags tags;
 
 	T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start:  blocks %d next %d" TENDSTR),
-		dev->blocksInCheckpoint, dev->checkpointNextBlock));
+		dev->blocks_in_checkpt, dev->checkpt_next_block));
 
-	if (dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
-		for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
-			int chunk = i * dev->nChunksPerBlock;
-			int realignedChunk = chunk - dev->chunkOffset;
+	if (dev->blocks_in_checkpt < dev->checkpt_max_blocks)
+		for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) {
+			int chunk = i * dev->param.chunks_per_block;
+			int realignedChunk = chunk - dev->chunk_offset;
 
-			dev->readChunkWithTagsFromNAND(dev, realignedChunk,
+			dev->param.read_chunk_tags_fn(dev, realignedChunk,
 					NULL, &tags);
 			T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
-				i, tags.objectId, tags.sequenceNumber, tags.eccResult));
+				i, tags.obj_id, tags.seq_number, tags.ecc_result));
 
-			if (tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) {
+			if (tags.seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) {
 				/* Right kind of block */
-				dev->checkpointNextBlock = tags.objectId;
-				dev->checkpointCurrentBlock = i;
-				dev->checkpointBlockList[dev->blocksInCheckpoint] = i;
-				dev->blocksInCheckpoint++;
+				dev->checkpt_next_block = tags.obj_id;
+				dev->checkpt_cur_block = i;
+				dev->checkpt_block_list[dev->blocks_in_checkpt] = i;
+				dev->blocks_in_checkpt++;
 				T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i));
 				return;
 			}
@@ -119,122 +118,127 @@ static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev)
 
 	T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR)));
 
-	dev->checkpointNextBlock = -1;
-	dev->checkpointCurrentBlock = -1;
+	dev->checkpt_next_block = -1;
+	dev->checkpt_cur_block = -1;
 }
 
 
-int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)
+int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting)
 {
 
+
+	dev->checkpt_open_write = forWriting;
+
 	/* Got the functions we need? */
-	if (!dev->writeChunkWithTagsToNAND ||
-			!dev->readChunkWithTagsFromNAND ||
-			!dev->eraseBlockInNAND ||
-			!dev->markNANDBlockBad)
+	if (!dev->param.write_chunk_tags_fn ||
+		!dev->param.read_chunk_tags_fn ||
+		!dev->param.erase_fn ||
+		!dev->param.bad_block_fn)
 		return 0;
 
-	if (forWriting && !yaffs_CheckpointSpaceOk(dev))
+	if (forWriting && !yaffs2_checkpt_space_ok(dev))
 		return 0;
 
-	if (!dev->checkpointBuffer)
-		dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk);
-	if (!dev->checkpointBuffer)
+	if (!dev->checkpt_buffer)
+		dev->checkpt_buffer = YMALLOC_DMA(dev->param.total_bytes_per_chunk);
+	if (!dev->checkpt_buffer)
 		return 0;
 
 
-	dev->checkpointPageSequence = 0;
-
-	dev->checkpointOpenForWrite = forWriting;
-
-	dev->checkpointByteCount = 0;
-	dev->checkpointSum = 0;
-	dev->checkpointXor = 0;
-	dev->checkpointCurrentBlock = -1;
-	dev->checkpointCurrentChunk = -1;
-	dev->checkpointNextBlock = dev->internalStartBlock;
+	dev->checkpt_page_seq = 0;
+	dev->checkpt_byte_count = 0;
+	dev->checkpt_sum = 0;
+	dev->checkpt_xor = 0;
+	dev->checkpt_cur_block = -1;
+	dev->checkpt_cur_chunk = -1;
+	dev->checkpt_next_block = dev->internal_start_block;
 
 	/* Erase all the blocks in the checkpoint area */
 	if (forWriting) {
-		memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);
-		dev->checkpointByteOffset = 0;
-		return yaffs_CheckpointErase(dev);
+		memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk);
+		dev->checkpt_byte_offs = 0;
+		return yaffs_checkpt_erase(dev);
 	} else {
 		int i;
 		/* Set to a value that will kick off a read */
-		dev->checkpointByteOffset = dev->nDataBytesPerChunk;
+		dev->checkpt_byte_offs = dev->data_bytes_per_chunk;
 		/* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully)
 		 * going to be way more than we need */
-		dev->blocksInCheckpoint = 0;
-		dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2;
-		dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks);
-		for (i = 0; i < dev->checkpointMaxBlocks; i++)
-			dev->checkpointBlockList[i] = -1;
+		dev->blocks_in_checkpt = 0;
+		dev->checkpt_max_blocks = (dev->internal_end_block - dev->internal_start_block)/16 + 2;
+		dev->checkpt_block_list = YMALLOC(sizeof(int) * dev->checkpt_max_blocks);
+		if(!dev->checkpt_block_list)
+			return 0;
+
+		for (i = 0; i < dev->checkpt_max_blocks; i++)
+			dev->checkpt_block_list[i] = -1;
 	}
 
 	return 1;
 }
 
-int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum)
+int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum)
 {
 	__u32 compositeSum;
-	compositeSum =  (dev->checkpointSum << 8) | (dev->checkpointXor & 0xFF);
+	compositeSum =  (dev->checkpt_sum << 8) | (dev->checkpt_xor & 0xFF);
 	*sum = compositeSum;
 	return 1;
 }
 
-static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
+static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev)
 {
 	int chunk;
 	int realignedChunk;
 
-	yaffs_ExtendedTags tags;
+	yaffs_ext_tags tags;
 
-	if (dev->checkpointCurrentBlock < 0) {
-		yaffs_CheckpointFindNextErasedBlock(dev);
-		dev->checkpointCurrentChunk = 0;
+	if (dev->checkpt_cur_block < 0) {
+		yaffs2_checkpt_find_erased_block(dev);
+		dev->checkpt_cur_chunk = 0;
 	}
 
-	if (dev->checkpointCurrentBlock < 0)
+	if (dev->checkpt_cur_block < 0)
 		return 0;
 
-	tags.chunkDeleted = 0;
-	tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */
-	tags.chunkId = dev->checkpointPageSequence + 1;
-	tags.sequenceNumber =  YAFFS_SEQUENCE_CHECKPOINT_DATA;
-	tags.byteCount = dev->nDataBytesPerChunk;
-	if (dev->checkpointCurrentChunk == 0) {
+	tags.is_deleted = 0;
+	tags.obj_id = dev->checkpt_next_block; /* Hint to next place to look */
+	tags.chunk_id = dev->checkpt_page_seq + 1;
+	tags.seq_number =  YAFFS_SEQUENCE_CHECKPOINT_DATA;
+	tags.n_bytes = dev->data_bytes_per_chunk;
+	if (dev->checkpt_cur_chunk == 0) {
 		/* First chunk we write for the block? Set block state to
 		   checkpoint */
-		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointCurrentBlock);
-		bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
-		dev->blocksInCheckpoint++;
+		yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->checkpt_cur_block);
+		bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT;
+		dev->blocks_in_checkpt++;
 	}
 
-	chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk;
+	chunk = dev->checkpt_cur_block * dev->param.chunks_per_block + dev->checkpt_cur_chunk;
 
 
 	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
-		chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk, tags.objectId, tags.chunkId));
-
-	realignedChunk = chunk - dev->chunkOffset;
-
-	dev->writeChunkWithTagsToNAND(dev, realignedChunk,
-			dev->checkpointBuffer, &tags);
-	dev->checkpointByteOffset = 0;
-	dev->checkpointPageSequence++;
-	dev->checkpointCurrentChunk++;
-	if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) {
-		dev->checkpointCurrentChunk = 0;
-		dev->checkpointCurrentBlock = -1;
+		chunk, dev->checkpt_cur_block, dev->checkpt_cur_chunk, tags.obj_id, tags.chunk_id));
+
+	realignedChunk = chunk - dev->chunk_offset;
+
+	dev->n_page_writes++;
+
+	dev->param.write_chunk_tags_fn(dev, realignedChunk,
+			dev->checkpt_buffer, &tags);
+	dev->checkpt_byte_offs = 0;
+	dev->checkpt_page_seq++;
+	dev->checkpt_cur_chunk++;
+	if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) {
+		dev->checkpt_cur_chunk = 0;
+		dev->checkpt_cur_block = -1;
 	}
-	memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);
+	memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk);
 
 	return 1;
 }
 
 
-int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes)
+int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes)
 {
 	int i = 0;
 	int ok = 1;
@@ -244,36 +248,36 @@ int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes)
 
 
 
-	if (!dev->checkpointBuffer)
+	if (!dev->checkpt_buffer)
 		return 0;
 
-	if (!dev->checkpointOpenForWrite)
+	if (!dev->checkpt_open_write)
 		return -1;
 
-	while (i < nBytes && ok) {
-		dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes;
-		dev->checkpointSum += *dataBytes;
-		dev->checkpointXor ^= *dataBytes;
+	while (i < n_bytes && ok) {
+		dev->checkpt_buffer[dev->checkpt_byte_offs] = *dataBytes;
+		dev->checkpt_sum += *dataBytes;
+		dev->checkpt_xor ^= *dataBytes;
 
-		dev->checkpointByteOffset++;
+		dev->checkpt_byte_offs++;
 		i++;
 		dataBytes++;
-		dev->checkpointByteCount++;
+		dev->checkpt_byte_count++;
 
 
-		if (dev->checkpointByteOffset < 0 ||
-		   dev->checkpointByteOffset >= dev->nDataBytesPerChunk)
-			ok = yaffs_CheckpointFlushBuffer(dev);
+		if (dev->checkpt_byte_offs < 0 ||
+		   dev->checkpt_byte_offs >= dev->data_bytes_per_chunk)
+			ok = yaffs2_checkpt_flush_buffer(dev);
 	}
 
 	return i;
 }
 
-int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
+int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes)
 {
 	int i = 0;
 	int ok = 1;
-	yaffs_ExtendedTags tags;
+	yaffs_ext_tags tags;
 
 
 	int chunk;
@@ -281,113 +285,116 @@ int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
 
 	__u8 *dataBytes = (__u8 *)data;
 
-	if (!dev->checkpointBuffer)
+	if (!dev->checkpt_buffer)
 		return 0;
 
-	if (dev->checkpointOpenForWrite)
+	if (dev->checkpt_open_write)
 		return -1;
 
-	while (i < nBytes && ok) {
+	while (i < n_bytes && ok) {
 
 
-		if (dev->checkpointByteOffset < 0 ||
-			dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
+		if (dev->checkpt_byte_offs < 0 ||
+			dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) {
 
-			if (dev->checkpointCurrentBlock < 0) {
-				yaffs_CheckpointFindNextCheckpointBlock(dev);
-				dev->checkpointCurrentChunk = 0;
+			if (dev->checkpt_cur_block < 0) {
+				yaffs2_checkpt_find_block(dev);
+				dev->checkpt_cur_chunk = 0;
 			}
 
-			if (dev->checkpointCurrentBlock < 0)
+			if (dev->checkpt_cur_block < 0)
 				ok = 0;
 			else {
-				chunk = dev->checkpointCurrentBlock *
-					dev->nChunksPerBlock +
-					dev->checkpointCurrentChunk;
+				chunk = dev->checkpt_cur_block *
+					dev->param.chunks_per_block +
+					dev->checkpt_cur_chunk;
 
-				realignedChunk = chunk - dev->chunkOffset;
+				realignedChunk = chunk - dev->chunk_offset;
+				
+				dev->n_page_reads++;
 
 				/* read in the next chunk */
 				/* printf("read checkpoint page %d\n",dev->checkpointPage); */
-				dev->readChunkWithTagsFromNAND(dev,
+				dev->param.read_chunk_tags_fn(dev,
 						realignedChunk,
-						dev->checkpointBuffer,
+						dev->checkpt_buffer,
 						&tags);
 
-				if (tags.chunkId != (dev->checkpointPageSequence + 1) ||
-					tags.eccResult > YAFFS_ECC_RESULT_FIXED ||
-					tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
+				if (tags.chunk_id != (dev->checkpt_page_seq + 1) ||
+					tags.ecc_result > YAFFS_ECC_RESULT_FIXED ||
+					tags.seq_number != YAFFS_SEQUENCE_CHECKPOINT_DATA)
 					ok = 0;
 
-				dev->checkpointByteOffset = 0;
-				dev->checkpointPageSequence++;
-				dev->checkpointCurrentChunk++;
+				dev->checkpt_byte_offs = 0;
+				dev->checkpt_page_seq++;
+				dev->checkpt_cur_chunk++;
 
-				if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
-					dev->checkpointCurrentBlock = -1;
+				if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block)
+					dev->checkpt_cur_block = -1;
 			}
 		}
 
 		if (ok) {
-			*dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset];
-			dev->checkpointSum += *dataBytes;
-			dev->checkpointXor ^= *dataBytes;
-			dev->checkpointByteOffset++;
+			*dataBytes = dev->checkpt_buffer[dev->checkpt_byte_offs];
+			dev->checkpt_sum += *dataBytes;
+			dev->checkpt_xor ^= *dataBytes;
+			dev->checkpt_byte_offs++;
 			i++;
 			dataBytes++;
-			dev->checkpointByteCount++;
+			dev->checkpt_byte_count++;
 		}
 	}
 
 	return 	i;
 }
 
-int yaffs_CheckpointClose(yaffs_Device *dev)
+int yaffs_checkpt_close(yaffs_dev_t *dev)
 {
 
-	if (dev->checkpointOpenForWrite) {
-		if (dev->checkpointByteOffset != 0)
-			yaffs_CheckpointFlushBuffer(dev);
-	} else {
+	if (dev->checkpt_open_write) {
+		if (dev->checkpt_byte_offs != 0)
+			yaffs2_checkpt_flush_buffer(dev);
+	} else if(dev->checkpt_block_list){
 		int i;
-		for (i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++) {
-			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointBlockList[i]);
-			if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY)
-				bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
+		for (i = 0; i < dev->blocks_in_checkpt && dev->checkpt_block_list[i] >= 0; i++) {
+			int blk = dev->checkpt_block_list[i];
+			yaffs_block_info_t *bi = NULL;
+			if( dev->internal_start_block <= blk && blk <= dev->internal_end_block)
+				bi = yaffs_get_block_info(dev, blk);
+			if (bi && bi->block_state == YAFFS_BLOCK_STATE_EMPTY)
+				bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT;
 			else {
 				/* Todo this looks odd... */
 			}
 		}
-		YFREE(dev->checkpointBlockList);
-		dev->checkpointBlockList = NULL;
+		YFREE(dev->checkpt_block_list);
+		dev->checkpt_block_list = NULL;
 	}
 
-	dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock;
-	dev->nErasedBlocks -= dev->blocksInCheckpoint;
+	dev->n_free_chunks -= dev->blocks_in_checkpt * dev->param.chunks_per_block;
+	dev->n_erased_blocks -= dev->blocks_in_checkpt;
 
 
 	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR),
-			dev->checkpointByteCount));
+			dev->checkpt_byte_count));
 
-	if (dev->checkpointBuffer) {
+	if (dev->checkpt_buffer) {
 		/* free the buffer */
-		YFREE(dev->checkpointBuffer);
-		dev->checkpointBuffer = NULL;
+		YFREE(dev->checkpt_buffer);
+		dev->checkpt_buffer = NULL;
 		return 1;
 	} else
 		return 0;
 }
 
-int yaffs_CheckpointInvalidateStream(yaffs_Device *dev)
+int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev)
 {
-	/* Erase the first checksum block */
-
-	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate"TENDSTR)));
+	/* Erase the checkpoint data */
 
-	if (!yaffs_CheckpointSpaceOk(dev))
-		return 0;
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate of %d blocks"TENDSTR),
+		dev->blocks_in_checkpt));
 
-	return yaffs_CheckpointErase(dev);
+	return yaffs_checkpt_erase(dev);
 }
 
 

target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -18,18 +18,17 @@
 
 #include "yaffs_guts.h"
 
-int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting);
+int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting);
 
-int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes);
+int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes);
 
-int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes);
+int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes);
 
-int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum);
+int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum);
 
-int yaffs_CheckpointClose(yaffs_Device *dev);
+int yaffs_checkpt_close(yaffs_dev_t *dev);
 
-int yaffs_CheckpointInvalidateStream(yaffs_Device *dev);
+int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev);
 
 
 #endif
-

target/linux/generic/files/fs/yaffs2/yaffs_ecc.c

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -28,9 +28,6 @@
  * this bytes influence on the line parity.
  */
 
-const char *yaffs_ecc_c_version =
-	"$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $";
-
 #include "yportenv.h"
 
 #include "yaffs_ecc.h"
@@ -72,7 +69,7 @@ static const unsigned char column_parity_table[] = {
 
 /* Count the bits in an unsigned char or a U32 */
 
-static int yaffs_CountBits(unsigned char x)
+static int yaffs_count_bits(unsigned char x)
 {
 	int r = 0;
 	while (x) {
@@ -83,7 +80,7 @@ static int yaffs_CountBits(unsigned char x)
 	return r;
 }
 
-static int yaffs_CountBits32(unsigned x)
+static int yaffs_count_bits32(unsigned x)
 {
 	int r = 0;
 	while (x) {
@@ -95,7 +92,7 @@ static int yaffs_CountBits32(unsigned x)
 }
 
 /* Calculate the ECC for a 256-byte block of data */
-void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc)
+void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc)
 {
 	unsigned int i;
 
@@ -166,7 +163,7 @@ void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc)
 
 /* Correct the ECC on a 256 byte block of data */
 
-int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
+int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
 		     const unsigned char *test_ecc)
 {
 	unsigned char d0, d1, d2;	/* deltas */
@@ -226,9 +223,9 @@ int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
 		return 1; /* Corrected the error */
 	}
 
-	if ((yaffs_CountBits(d0) +
-	     yaffs_CountBits(d1) +
-	     yaffs_CountBits(d2)) ==  1) {
+	if ((yaffs_count_bits(d0) +
+	     yaffs_count_bits(d1) +
+	     yaffs_count_bits(d2)) ==  1) {
 		/* Reccoverable error in ecc */
 
 		read_ecc[0] = test_ecc[0];
@@ -248,7 +245,7 @@ int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
 /*
  * ECCxxxOther does ECC calcs on arbitrary n bytes of data
  */
-void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
+void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes,
 				yaffs_ECCOther *eccOther)
 {
 	unsigned int i;
@@ -258,7 +255,7 @@ void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
 	unsigned line_parity_prime = 0;
 	unsigned char b;
 
-	for (i = 0; i < nBytes; i++) {
+	for (i = 0; i < n_bytes; i++) {
 		b = column_parity_table[*data++];
 		col_parity ^= b;
 
@@ -275,7 +272,7 @@ void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
 	eccOther->lineParityPrime = line_parity_prime;
 }
 
-int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
+int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes,
 			yaffs_ECCOther *read_ecc,
 			const yaffs_ECCOther *test_ecc)
 {
@@ -304,7 +301,7 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
 		if (cDelta & 0x02)
 			bit |= 0x01;
 
-		if (lDelta >= nBytes)
+		if (lDelta >= n_bytes)
 			return -1;
 
 		data[lDelta] ^= (1 << bit);
@@ -312,8 +309,8 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
 		return 1; /* corrected */
 	}
 
-	if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) +
-			yaffs_CountBits(cDelta)) == 1) {
+	if ((yaffs_count_bits32(lDelta) + yaffs_count_bits32(lDeltaPrime) +
+			yaffs_count_bits(cDelta)) == 1) {
 		/* Reccoverable error in ecc */
 
 		*read_ecc = *test_ecc;

target/linux/generic/files/fs/yaffs2/yaffs_ecc.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -32,13 +32,13 @@ typedef struct {
 	unsigned lineParityPrime;
 } yaffs_ECCOther;
 
-void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc);
-int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
+void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc);
+int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
 		const unsigned char *test_ecc);
 
-void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
+void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes,
 			yaffs_ECCOther *ecc);
-int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
+int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes,
 			yaffs_ECCOther *read_ecc,
 			const yaffs_ECCOther *test_ecc);
 #endif

target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -17,18 +17,19 @@
 #define __YAFFS_GETBLOCKINFO_H__
 
 #include "yaffs_guts.h"
+#include "yaffs_trace.h"
 
 /* Function to manipulate block info */
-static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
+static Y_INLINE yaffs_block_info_t *yaffs_get_block_info(yaffs_dev_t * dev, int blk)
 {
-	if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
+	if (blk < dev->internal_start_block || blk > dev->internal_end_block) {
 		T(YAFFS_TRACE_ERROR,
 		  (TSTR
 		   ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
 		   blk));
 		YBUG();
 	}
-	return &dev->blockInfo[blk - dev->internalStartBlock];
+	return &dev->block_info[blk - dev->internal_start_block];
 }
 
 #endif

target/linux/generic/files/fs/yaffs2/yaffs_linux.h

@@ -0,0 +1,43 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+#ifndef __YAFFS_LINUX_H__
+#define __YAFFS_LINUX_H__
+
+#include "devextras.h"
+#include "yportenv.h"
+
+struct yaffs_LinuxContext {
+	struct ylist_head	contextList; /* List of these we have mounted */
+	struct yaffs_dev_s *dev;
+	struct super_block * superBlock;
+	struct task_struct *bgThread; /* Background thread for this device */
+	int bgRunning;
+        struct semaphore grossLock;     /* Gross locking semaphore */
+	__u8 *spareBuffer;      /* For mtdif2 use. Don't know the size of the buffer
+				 * at compile time so we have to allocate it.
+				 */
+	struct ylist_head searchContexts;
+	void (*putSuperFunc)(struct super_block *sb);
+
+	struct task_struct *readdirProcess;
+	unsigned mount_id;
+};
+
+#define yaffs_dev_to_lc(dev) ((struct yaffs_LinuxContext *)((dev)->os_context))
+#define yaffs_dev_to_mtd(dev) ((struct mtd_info *)((dev)->driver_context))
+
+#endif
+

target/linux/generic/files/fs/yaffs2/yaffs_linux_allocator.c

@@ -0,0 +1,200 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ *
+ * Note: Tis code is currently unused. Being checked in in case it becomes useful.
+ */
+
+
+#include "yaffs_allocator.h"
+#include "yaffs_guts.h"
+#include "yaffs_trace.h"
+#include "yportenv.h"
+#include "yaffs_linux.h"
+/*
+ * Start out with the same allocator as yaffs direct.
+ * Todo: Change to Linux slab allocator.
+ */
+
+
+
+#define NAMELEN  20
+struct yaffs_AllocatorStruct {
+	char tnode_name[NAMELEN+1];
+	char object_name[NAMELEN+1];
+	struct kmem_cache *tnode_cache;
+	struct kmem_cache *object_cache;
+};
+
+typedef struct yaffs_AllocatorStruct yaffs_Allocator;
+
+int mount_id;
+
+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
+{
+	yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
+
+	T(YAFFS_TRACE_ALLOCATE,(TSTR("Deinitialising yaffs allocator\n")));
+
+	if(allocator){
+		if(allocator->tnode_cache){
+			kmem_cache_destroy(allocator->tnode_cache);
+			allocator->tnode_cache = NULL;
+		} else {
+			T(YAFFS_TRACE_ALWAYS,
+				(TSTR("NULL tnode cache\n")));
+			YBUG();
+		}
+
+		if(allocator->object_cache){
+			kmem_cache_destroy(allocator->object_cache);
+			allocator->object_cache = NULL;
+		} else {
+			T(YAFFS_TRACE_ALWAYS,
+				(TSTR("NULL object cache\n")));
+			YBUG();
+		}
+
+		YFREE(allocator);
+
+	} else {
+		T(YAFFS_TRACE_ALWAYS,
+			(TSTR("Deinitialising NULL allocator\n")));
+		YBUG();
+	}
+	dev->allocator = NULL;
+}
+
+
+static void fake_ctor0(void *data){data = data;}
+static void fake_ctor1(void *data){data = data;}
+static void fake_ctor2(void *data){data = data;}
+static void fake_ctor3(void *data){data = data;}
+static void fake_ctor4(void *data){data = data;}
+static void fake_ctor5(void *data){data = data;}
+static void fake_ctor6(void *data){data = data;}
+static void fake_ctor7(void *data){data = data;}
+static void fake_ctor8(void *data){data = data;}
+static void fake_ctor9(void *data){data = data;}
+
+static void (*fake_ctor_list[10]) (void *) = {
+	fake_ctor0,
+	fake_ctor1,
+	fake_ctor2,
+	fake_ctor3,
+	fake_ctor4,
+	fake_ctor5,
+	fake_ctor6,
+	fake_ctor7,
+	fake_ctor8,
+	fake_ctor9,
+};
+
+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
+{
+	yaffs_Allocator *allocator;
+	unsigned mount_id = yaffs_dev_to_lc(dev)->mount_id;
+
+	T(YAFFS_TRACE_ALLOCATE,(TSTR("Initialising yaffs allocator\n")));
+
+	if(dev->allocator)
+		YBUG();
+	else if(mount_id >= 10){
+		T(YAFFS_TRACE_ALWAYS,(TSTR("Bad mount_id %u\n"),mount_id));
+	} else {
+		 allocator = YMALLOC(sizeof(yaffs_Allocator));
+		 memset(allocator,0,sizeof(yaffs_Allocator));
+		 dev->allocator = allocator;
+
+		if(!dev->allocator){
+			T(YAFFS_TRACE_ALWAYS,
+				(TSTR("yaffs allocator creation failed\n")));
+			YBUG();
+			return;
+
+		}
+
+		sprintf(allocator->tnode_name,"yaffs_t_%u",mount_id);
+		sprintf(allocator->object_name,"yaffs_o_%u",mount_id);
+
+		allocator->tnode_cache =
+			kmem_cache_create(allocator->tnode_name,
+				dev->tnode_size,
+				0, 0,
+				fake_ctor_list[mount_id]);
+		if(allocator->tnode_cache)
+			T(YAFFS_TRACE_ALLOCATE,
+				(TSTR("tnode cache \"%s\" %p\n"),
+				allocator->tnode_name,allocator->tnode_cache));
+		else {
+			T(YAFFS_TRACE_ALWAYS,
+				(TSTR("yaffs cache creation failed\n")));
+			YBUG();
+		}
+
+
+		allocator->object_cache = 
+			kmem_cache_create(allocator->object_name,
+				sizeof(yaffs_obj_t),
+				0, 0,
+				fake_ctor_list[mount_id]);
+
+		if(allocator->object_cache)
+			T(YAFFS_TRACE_ALLOCATE,
+				(TSTR("object cache \"%s\" %p\n"),
+				allocator->object_name,allocator->object_cache));
+
+		else {
+			T(YAFFS_TRACE_ALWAYS,
+				(TSTR("yaffs cache creation failed\n")));
+			YBUG();
+		}
+	} 
+}
+
+
+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
+{
+	yaffs_Allocator *allocator = dev->allocator;
+	if(!allocator || !allocator->tnode_cache){
+		YBUG();
+		return NULL;
+	}
+	return kmem_cache_alloc(allocator->tnode_cache, GFP_NOFS);
+}
+
+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
+{
+	yaffs_Allocator *allocator = dev->allocator;
+	kmem_cache_free(allocator->tnode_cache,tn);
+}
+
+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
+{
+	yaffs_Allocator *allocator = dev->allocator;
+	if(!allocator){
+		YBUG();
+		return NULL;
+	}
+	if(!allocator->object_cache){
+		YBUG();
+		return NULL;
+	}
+	return kmem_cache_alloc(allocator->object_cache, GFP_NOFS);
+}
+
+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
+{
+	yaffs_Allocator *allocator = dev->allocator;
+	kmem_cache_free(allocator->object_cache,obj);
+}

target/linux/generic/files/fs/yaffs2/yaffs_list.h

@@ -0,0 +1,127 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+/*
+ * This file is just holds extra declarations of macros that would normally
+ * be providesd in the Linux kernel. These macros have been written from
+ * scratch but are functionally equivalent to the Linux ones.
+ *
+ */
+
+#ifndef __YAFFS_LIST_H__
+#define __YAFFS_LIST_H__
+
+
+#include "yportenv.h"
+
+/*
+ * This is a simple doubly linked list implementation that matches the
+ * way the Linux kernel doubly linked list implementation works.
+ */
+
+struct ylist_head {
+	struct ylist_head *next; /* next in chain */
+	struct ylist_head *prev; /* previous in chain */
+};
+
+
+/* Initialise a static list */
+#define YLIST_HEAD(name) \
+struct ylist_head name = { &(name), &(name)}
+
+
+
+/* Initialise a list head to an empty list */
+#define YINIT_LIST_HEAD(p) \
+do { \
+	(p)->next = (p);\
+	(p)->prev = (p); \
+} while (0)
+
+
+/* Add an element to a list */
+static Y_INLINE void ylist_add(struct ylist_head *newEntry,
+				struct ylist_head *list)
+{
+	struct ylist_head *listNext = list->next;
+
+	list->next = newEntry;
+	newEntry->prev = list;
+	newEntry->next = listNext;
+	listNext->prev = newEntry;
+
+}
+
+static Y_INLINE void ylist_add_tail(struct ylist_head *newEntry,
+				 struct ylist_head *list)
+{
+	struct ylist_head *listPrev = list->prev;
+
+	list->prev = newEntry;
+	newEntry->next = list;
+	newEntry->prev = listPrev;
+	listPrev->next = newEntry;
+
+}
+
+
+/* Take an element out of its current list, with or without
+ * reinitialising the links.of the entry*/
+static Y_INLINE void ylist_del(struct ylist_head *entry)
+{
+	struct ylist_head *listNext = entry->next;
+	struct ylist_head *listPrev = entry->prev;
+
+	listNext->prev = listPrev;
+	listPrev->next = listNext;
+
+}
+
+static Y_INLINE void ylist_del_init(struct ylist_head *entry)
+{
+	ylist_del(entry);
+	entry->next = entry->prev = entry;
+}
+
+
+/* Test if the list is empty */
+static Y_INLINE int ylist_empty(struct ylist_head *entry)
+{
+	return (entry->next == entry);
+}
+
+
+/* ylist_entry takes a pointer to a list entry and offsets it to that
+ * we can find a pointer to the object it is embedded in.
+ */
+
+
+#define ylist_entry(entry, type, member) \
+	((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member)))
+
+
+/* ylist_for_each and list_for_each_safe  iterate over lists.
+ * ylist_for_each_safe uses temporary storage to make the list delete safe
+ */
+
+#define ylist_for_each(itervar, list) \
+	for (itervar = (list)->next; itervar != (list); itervar = itervar->next)
+
+#define ylist_for_each_safe(itervar, saveVar, list) \
+	for (itervar = (list)->next, saveVar = (list)->next->next; \
+		itervar != (list); itervar = saveVar, saveVar = saveVar->next)
+
+
+#endif

target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -11,9 +11,6 @@
  * published by the Free Software Foundation.
  */
 
-const char *yaffs_mtdif_c_version =
-	"$Id: yaffs_mtdif.c,v 1.22 2009-03-06 17:20:51 wookey Exp $";
-
 #include "yportenv.h"
 
 
@@ -24,208 +21,26 @@ const char *yaffs_mtdif_c_version =
 #include "linux/time.h"
 #include "linux/mtd/nand.h"
 
-#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18))
-static struct nand_oobinfo yaffs_oobinfo = {
-	.useecc = 1,
-	.eccbytes = 6,
-	.eccpos = {8, 9, 10, 13, 14, 15}
-};
-
-static struct nand_oobinfo yaffs_noeccinfo = {
-	.useecc = 0,
-};
-#endif
-
-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
-static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob)
-{
-	oob[0] = spare->tagByte0;
-	oob[1] = spare->tagByte1;
-	oob[2] = spare->tagByte2;
-	oob[3] = spare->tagByte3;
-	oob[4] = spare->tagByte4;
-	oob[5] = spare->tagByte5 & 0x3f;
-	oob[5] |= spare->blockStatus == 'Y' ? 0 : 0x80;
-	oob[5] |= spare->pageStatus == 0 ? 0 : 0x40;
-	oob[6] = spare->tagByte6;
-	oob[7] = spare->tagByte7;
-}
-
-static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob)
-{
-	struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare;
-	spare->tagByte0 = oob[0];
-	spare->tagByte1 = oob[1];
-	spare->tagByte2 = oob[2];
-	spare->tagByte3 = oob[3];
-	spare->tagByte4 = oob[4];
-	spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f;
-	spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y';
-	spare->pageStatus = oob[5] & 0x40 ? 0xff : 0;
-	spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff;
-	spare->tagByte6 = oob[6];
-	spare->tagByte7 = oob[7];
-	spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff;
-
-	nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */
-}
-#endif
+#include "yaffs_linux.h"
 
-int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND,
-			     const __u8 *data, const yaffs_Spare *spare)
+int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber)
 {
-	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
-	struct mtd_oob_ops ops;
-#endif
-	size_t dummy;
-	int retval = 0;
-
-	loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
-	__u8 spareAsBytes[8]; /* OOB */
-
-	if (data && !spare)
-		retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk,
-				&dummy, data);
-	else if (spare) {
-		if (dev->useNANDECC) {
-			translate_spare2oob(spare, spareAsBytes);
-			ops.mode = MTD_OOB_AUTO;
-			ops.ooblen = 8; /* temp hack */
-		} else {
-			ops.mode = MTD_OOB_RAW;
-			ops.ooblen = YAFFS_BYTES_PER_SPARE;
-		}
-		ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen;
-		ops.datbuf = (u8 *)data;
-		ops.ooboffs = 0;
-		ops.oobbuf = spareAsBytes;
-		retval = mtd->write_oob(mtd, addr, &ops);
-	}
-#else
-	__u8 *spareAsBytes = (__u8 *) spare;
-
-	if (data && spare) {
-		if (dev->useNANDECC)
-			retval =
-			    mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
-					   &dummy, data, spareAsBytes,
-					   &yaffs_oobinfo);
-		else
-			retval =
-			    mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
-					   &dummy, data, spareAsBytes,
-					   &yaffs_noeccinfo);
-	} else {
-		if (data)
-			retval =
-			    mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy,
-				       data);
-		if (spare)
-			retval =
-			    mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE,
-					   &dummy, spareAsBytes);
-	}
-#endif
-
-	if (retval == 0)
-		return YAFFS_OK;
-	else
-		return YAFFS_FAIL;
-}
-
-int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data,
-			      yaffs_Spare *spare)
-{
-	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
-	struct mtd_oob_ops ops;
-#endif
-	size_t dummy;
-	int retval = 0;
-
-	loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
-	__u8 spareAsBytes[8]; /* OOB */
-
-	if (data && !spare)
-		retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk,
-				&dummy, data);
-	else if (spare) {
-		if (dev->useNANDECC) {
-			ops.mode = MTD_OOB_AUTO;
-			ops.ooblen = 8; /* temp hack */
-		} else {
-			ops.mode = MTD_OOB_RAW;
-			ops.ooblen = YAFFS_BYTES_PER_SPARE;
-		}
-		ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen;
-		ops.datbuf = data;
-		ops.ooboffs = 0;
-		ops.oobbuf = spareAsBytes;
-		retval = mtd->read_oob(mtd, addr, &ops);
-		if (dev->useNANDECC)
-			translate_oob2spare(spare, spareAsBytes);
-	}
-#else
-	__u8 *spareAsBytes = (__u8 *) spare;
-
-	if (data && spare) {
-		if (dev->useNANDECC) {
-			/* Careful, this call adds 2 ints */
-			/* to the end of the spare data.  Calling function */
-			/* should allocate enough memory for spare, */
-			/* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */
-			retval =
-			    mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
-					  &dummy, data, spareAsBytes,
-					  &yaffs_oobinfo);
-		} else {
-			retval =
-			    mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
-					  &dummy, data, spareAsBytes,
-					  &yaffs_noeccinfo);
-		}
-	} else {
-		if (data)
-			retval =
-			    mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
-				      data);
-		if (spare)
-			retval =
-			    mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE,
-					  &dummy, spareAsBytes);
-	}
-#endif
-
-	if (retval == 0)
-		return YAFFS_OK;
-	else
-		return YAFFS_FAIL;
-}
-
-int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber)
-{
-	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
 	__u32 addr =
-	    ((loff_t) blockNumber) * dev->nDataBytesPerChunk
-		* dev->nChunksPerBlock;
+	    ((loff_t) blockNumber) * dev->param.total_bytes_per_chunk
+		* dev->param.chunks_per_block;
 	struct erase_info ei;
+	
 	int retval = 0;
 
 	ei.mtd = mtd;
 	ei.addr = addr;
-	ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock;
+	ei.len = dev->param.total_bytes_per_chunk * dev->param.chunks_per_block;
 	ei.time = 1000;
 	ei.retries = 2;
 	ei.callback = NULL;
 	ei.priv = (u_long) dev;
 
-	/* Todo finish off the ei if required */
-
-	sema_init(&dev->sem, 0);
-
 	retval = mtd->erase(mtd, &ei);
 
 	if (retval == 0)
@@ -234,7 +49,7 @@ int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber)
 		return YAFFS_FAIL;
 }
 
-int nandmtd_InitialiseNAND(yaffs_Device *dev)
+int nandmtd_InitialiseNAND(yaffs_dev_t *dev)
 {
 	return YAFFS_OK;
 }

target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -22,11 +22,6 @@
 extern struct nand_oobinfo yaffs_oobinfo;
 extern struct nand_oobinfo yaffs_noeccinfo;
 #endif
-
-int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND,
-			const __u8 *data, const yaffs_Spare *spare);
-int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data,
-			yaffs_Spare *spare);
-int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
-int nandmtd_InitialiseNAND(yaffs_Device *dev);
+int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber);
+int nandmtd_InitialiseNAND(yaffs_dev_t *dev);
 #endif

target/linux/generic/files/fs/yaffs2/yaffs_mtdif1-compat.c

@@ -1,434 +0,0 @@
-From ian@brightstareng.com Fri May 18 15:06:49 2007
-From ian@brightstareng.com Fri May 18 15:08:21 2007
-Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com)
-	by apollo.linkchoose.co.uk with esmtp (Exim 4.60)
-	(envelope-from <ian@brightstareng.com>)
-	id 1Hp380-00011e-T6
-	for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100
-Received: from localhost (localhost.localdomain [127.0.0.1])
-	by zebra.brightstareng.com (Postfix) with ESMTP
-	id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT)
-Received: from zebra.brightstareng.com ([127.0.0.1])
- by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP
- id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT)
-Received: from pippin (unknown [192.168.1.25])
-	by zebra.brightstareng.com (Postfix) with ESMTP
-	id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT)
-From: Ian McDonnell <ian@brightstareng.com>
-To: David Goodenough <david.goodenough@linkchoose.co.uk>
-Subject: Re: something tested this time -- yaffs_mtdif1-compat.c
-Date: Fri, 18 May 2007 10:06:49 -0400
-User-Agent: KMail/1.9.1
-References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk>
-In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk>
-Cc: Andrea Conti <alyf@alyf.net>,
- Charles Manning <manningc2@actrix.gen.nz>
-MIME-Version: 1.0
-Content-Type: Multipart/Mixed;
-  boundary="Boundary-00=_5LbTGmt62YoutxM"
-Message-Id: <200705181006.49860.ian@brightstareng.com>
-X-Virus-Scanned: by amavisd-new at brightstareng.com
-Status: R
-X-Status: NT
-X-KMail-EncryptionState:
-X-KMail-SignatureState:
-X-KMail-MDN-Sent:
-
---Boundary-00=_5LbTGmt62YoutxM
-Content-Type: text/plain;
-  charset="iso-8859-15"
-Content-Transfer-Encoding: 7bit
-Content-Disposition: inline
-
-David, Andrea,
-
-On Friday 18 May 2007 08:34, you wrote:
-> Yea team.  With this fix in place (I put it in the wrong place
-> at first) I can now mount and ls the Yaffs partition without
-> an error messages!
-
-Good news!
-
-Attached is a newer yaffs_mtdif1.c with a bandaid to help the
-2.6.18 and 2.6.19 versions of MTD not trip on the oob read.
-See the LINUX_VERSION_CODE conditional in
-nandmtd1_ReadChunkWithTagsFromNAND.
-
--imcd
-
---Boundary-00=_5LbTGmt62YoutxM
-Content-Type: text/x-csrc;
-  charset="iso-8859-15";
-  name="yaffs_mtdif1.c"
-Content-Transfer-Encoding: 7bit
-Content-Disposition: attachment;
-	filename="yaffs_mtdif1.c"
-
-/*
- * YAFFS: Yet another FFS. A NAND-flash specific file system.
- * yaffs_mtdif1.c  NAND mtd interface functions for small-page NAND.
- *
- * Copyright (C) 2002 Aleph One Ltd.
- *   for Toby Churchill Ltd and Brightstar Engineering
- *
- * 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 module provides the interface between yaffs_nand.c and the
- * MTD API.  This version is used when the MTD interface supports the
- * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17,
- * and we have small-page NAND device.
- *
- * These functions are invoked via function pointers in yaffs_nand.c.
- * This replaces functionality provided by functions in yaffs_mtdif.c
- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are
- * called in yaffs_mtdif.c when the function pointers are NULL.
- * We assume the MTD layer is performing ECC (useNANDECC is true).
- */
-
-#include "yportenv.h"
-#include "yaffs_guts.h"
-#include "yaffs_packedtags1.h"
-#include "yaffs_tagscompat.h"	// for yaffs_CalcTagsECC
-
-#include "linux/kernel.h"
-#include "linux/version.h"
-#include "linux/types.h"
-#include "linux/mtd/mtd.h"
-
-/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
-
-const char *yaffs_mtdif1_c_version = "$Id$";
-
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
-# define YTAG1_SIZE 8
-#else
-# define YTAG1_SIZE 9
-#endif
-
-#if 0
-/* Use the following nand_ecclayout with MTD when using
- * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout.
- * If you have existing Yaffs images and the byte order differs from this,
- * adjust 'oobfree' to match your existing Yaffs data.
- *
- * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the
- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to
- * the 9th byte.
- *
- * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5
- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P
- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus
- * byte and B is the small-page bad-block indicator byte.
- */
-static struct nand_ecclayout nand_oob_16 = {
-	.eccbytes = 6,
-	.eccpos = { 8, 9, 10, 13, 14, 15 },
-	.oobavail = 9,
-	.oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
-};
-#endif
-
-/* Write a chunk (page) of data to NAND.
- *
- * Caller always provides ExtendedTags data which are converted to a more
- * compact (packed) form for storage in NAND.  A mini-ECC runs over the
- * contents of the tags meta-data; used to valid the tags when read.
- *
- *  - Pack ExtendedTags to PackedTags1 form
- *  - Compute mini-ECC for PackedTags1
- *  - Write data and packed tags to NAND.
- *
- * Note: Due to the use of the PackedTags1 meta-data which does not include
- * a full sequence number (as found in the larger PackedTags2 form) it is
- * necessary for Yaffs to re-write a chunk/page (just once) to mark it as
- * discarded and dirty.  This is not ideal: newer NAND parts are supposed
- * to be written just once.  When Yaffs performs this operation, this
- * function is called with a NULL data pointer -- calling MTD write_oob
- * without data is valid usage (2.6.17).
- *
- * Any underlying MTD error results in YAFFS_FAIL.
- * Returns YAFFS_OK or YAFFS_FAIL.
- */
-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
-	int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags)
-{
-	struct mtd_info * mtd = dev->genericDevice;
-	int chunkBytes = dev->nDataBytesPerChunk;
-	loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
-	struct mtd_oob_ops ops;
-	yaffs_PackedTags1 pt1;
-	int retval;
-
-	/* we assume that PackedTags1 and yaffs_Tags are compatible */
-	compile_time_assertion(sizeof(yaffs_PackedTags1) == 12);
-	compile_time_assertion(sizeof(yaffs_Tags) == 8);
-
-	yaffs_PackTags1(&pt1, etags);
-	yaffs_CalcTagsECC((yaffs_Tags *)&pt1);
-
-	/* When deleting a chunk, the upper layer provides only skeletal
-	 * etags, one with chunkDeleted set.  However, we need to update the
-	 * tags, not erase them completely.  So we use the NAND write property
-	 * that only zeroed-bits stick and set tag bytes to all-ones and
-	 * zero just the (not) deleted bit.
-	 */
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
-	if (etags->chunkDeleted) {
-		memset(&pt1, 0xff, 8);
-		/* clear delete status bit to indicate deleted */
-		pt1.deleted = 0;
-	}
-#else
-	((__u8 *)&pt1)[8] = 0xff;
-	if (etags->chunkDeleted) {
-		memset(&pt1, 0xff, 8);
-		/* zero pageStatus byte to indicate deleted */
-		((__u8 *)&pt1)[8] = 0;
-	}
-#endif
-
-	memset(&ops, 0, sizeof(ops));
-	ops.mode = MTD_OOB_AUTO;
-	ops.len = (data) ? chunkBytes : 0;
-	ops.ooblen = YTAG1_SIZE;
-	ops.datbuf = (__u8 *)data;
-	ops.oobbuf = (__u8 *)&pt1;
-
-	retval = mtd->write_oob(mtd, addr, &ops);
-	if (retval) {
-		yaffs_trace(YAFFS_TRACE_MTD,
-			"write_oob failed, chunk %d, mtd error %d\n",
-			chunkInNAND, retval);
-	}
-	return retval ? YAFFS_FAIL : YAFFS_OK;
-}
-
-/* Return with empty ExtendedTags but add eccResult.
- */
-static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval)
-{
-	if (etags) {
-		memset(etags, 0, sizeof(*etags));
-		etags->eccResult = eccResult;
-	}
-	return retval;
-}
-
-/* Read a chunk (page) from NAND.
- *
- * Caller expects ExtendedTags data to be usable even on error; that is,
- * all members except eccResult and blockBad are zeroed.
- *
- *  - Check ECC results for data (if applicable)
- *  - Check for blank/erased block (return empty ExtendedTags if blank)
- *  - Check the PackedTags1 mini-ECC (correct if necessary/possible)
- *  - Convert PackedTags1 to ExtendedTags
- *  - Update eccResult and blockBad members to refect state.
- *
- * Returns YAFFS_OK or YAFFS_FAIL.
- */
-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
-	int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags)
-{
-	struct mtd_info * mtd = dev->genericDevice;
-	int chunkBytes = dev->nDataBytesPerChunk;
-	loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
-	int eccres = YAFFS_ECC_RESULT_NO_ERROR;
-	struct mtd_oob_ops ops;
-	yaffs_PackedTags1 pt1;
-	int retval;
-	int deleted;
-
-	memset(&ops, 0, sizeof(ops));
-	ops.mode = MTD_OOB_AUTO;
-	ops.len = (data) ? chunkBytes : 0;
-	ops.ooblen = YTAG1_SIZE;
-	ops.datbuf = data;
-	ops.oobbuf = (__u8 *)&pt1;
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
-	/* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
-	 * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
-	 */
-	ops.len = (ops.datbuf) ? ops.len : ops.ooblen;
-#endif
-	/* Read page and oob using MTD.
-	 * Check status and determine ECC result.
-	 */
-	retval = mtd->read_oob(mtd, addr, &ops);
-	if (retval) {
-		yaffs_trace(YAFFS_TRACE_MTD,
-			"read_oob failed, chunk %d, mtd error %d\n",
-			chunkInNAND, retval);
-	}
-
-	switch (retval) {
-	case 0:
-		/* no error */
-		break;
-
-	case -EUCLEAN:
-		/* MTD's ECC fixed the data */
-		eccres = YAFFS_ECC_RESULT_FIXED;
-		dev->eccFixed++;
-		break;
-
-	case -EBADMSG:
-		/* MTD's ECC could not fix the data */
-		dev->eccUnfixed++;
-		/* fall into... */
-	default:
-		rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
-		etags->blockBad = (mtd->block_isbad)(mtd, addr);
-		return YAFFS_FAIL;
-	}
-
-	/* Check for a blank/erased chunk.
-	 */
-	if (yaffs_CheckFF((__u8 *)&pt1, 8)) {
-		/* when blank, upper layers want eccResult to be <= NO_ERROR */
-		return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
-	}
-
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
-	/* Read deleted status (bit) then return it to it's non-deleted
-	 * state before performing tags mini-ECC check. pt1.deleted is
-	 * inverted.
-	 */
-	deleted = !pt1.deleted;
-	pt1.deleted = 1;
-#else
-	(void) deleted; /* not used */
-#endif
-
-	/* Check the packed tags mini-ECC and correct if necessary/possible.
-	 */
-	retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1);
-	switch (retval) {
-	case 0:
-		/* no tags error, use MTD result */
-		break;
-	case 1:
-		/* recovered tags-ECC error */
-		dev->tagsEccFixed++;
-		eccres = YAFFS_ECC_RESULT_FIXED;
-		break;
-	default:
-		/* unrecovered tags-ECC error */
-		dev->tagsEccUnfixed++;
-		return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL);
-	}
-
-	/* Unpack the tags to extended form and set ECC result.
-	 * [set shouldBeFF just to keep yaffs_UnpackTags1 happy]
-	 */
-	pt1.shouldBeFF = 0xFFFFFFFF;
-	yaffs_UnpackTags1(etags, &pt1);
-	etags->eccResult = eccres;
-
-	/* Set deleted state.
-	 */
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
-	etags->chunkDeleted = deleted;
-#else
-	etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
-#endif
-	return YAFFS_OK;
-}
-
-/* Mark a block bad.
- *
- * This is a persistant state.
- * Use of this function should be rare.
- *
- * Returns YAFFS_OK or YAFFS_FAIL.
- */
-int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
-{
-	struct mtd_info * mtd = dev->genericDevice;
-	int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
-	int retval;
-
-	yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
-
-	retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
-	return (retval) ? YAFFS_FAIL : YAFFS_OK;
-}
-
-/* Check any MTD prerequists.
- *
- * Returns YAFFS_OK or YAFFS_FAIL.
- */
-static int nandmtd1_TestPrerequists(struct mtd_info * mtd)
-{
-	/* 2.6.18 has mtd->ecclayout->oobavail */
-	/* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
-	int oobavail = mtd->ecclayout->oobavail;
-
-	if (oobavail < YTAG1_SIZE) {
-		yaffs_trace(YAFFS_TRACE_ERROR,
-			"mtd device has only %d bytes for tags, need %d",
-			oobavail, YTAG1_SIZE);
-		return YAFFS_FAIL;
-	}
-	return YAFFS_OK;
-}
-
-/* Query for the current state of a specific block.
- *
- * Examine the tags of the first chunk of the block and return the state:
- *  - YAFFS_BLOCK_STATE_DEAD, the block is marked bad
- *  - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use
- *  - YAFFS_BLOCK_STATE_EMPTY, the block is clean
- *
- * Always returns YAFFS_OK.
- */
-int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-	yaffs_BlockState * pState, int *pSequenceNumber)
-{
-	struct mtd_info * mtd = dev->genericDevice;
-	int chunkNo = blockNo * dev->nChunksPerBlock;
-	yaffs_ExtendedTags etags;
-	int state = YAFFS_BLOCK_STATE_DEAD;
-	int seqnum = 0;
-	int retval;
-
-	/* We don't yet have a good place to test for MTD config prerequists.
-	 * Do it here as we are called during the initial scan.
-	 */
-	if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) {
-		return YAFFS_FAIL;
-	}
-
-	retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
-	if (etags.blockBad) {
-		yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
-			"block %d is marked bad", blockNo);
-		state = YAFFS_BLOCK_STATE_DEAD;
-	}
-	else if (etags.chunkUsed) {
-		state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
-		seqnum = etags.sequenceNumber;
-	}
-	else {
-		state = YAFFS_BLOCK_STATE_EMPTY;
-	}
-
-	*pState = state;
-	*pSequenceNumber = seqnum;
-
-	/* query always succeeds */
-	return YAFFS_OK;
-}
-
-#endif /*KERNEL_VERSION*/
-
---Boundary-00=_5LbTGmt62YoutxM--
-
-
-

target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c

@@ -2,7 +2,7 @@
  * YAFFS: Yet another FFS. A NAND-flash specific file system.
  * yaffs_mtdif1.c  NAND mtd interface functions for small-page NAND.
  *
- * Copyright (C) 2002 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * This program is free software; you can redistribute it and/or modify
@@ -18,15 +18,17 @@
  *
  * These functions are invoked via function pointers in yaffs_nand.c.
  * This replaces functionality provided by functions in yaffs_mtdif.c
- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are
+ * and the yaffs_tags_tCompatability functions in yaffs_tagscompat.c that are
  * called in yaffs_mtdif.c when the function pointers are NULL.
- * We assume the MTD layer is performing ECC (useNANDECC is true).
+ * We assume the MTD layer is performing ECC (use_nand_ecc is true).
  */
 
 #include "yportenv.h"
+#include "yaffs_trace.h"
 #include "yaffs_guts.h"
 #include "yaffs_packedtags1.h"
-#include "yaffs_tagscompat.h"	/* for yaffs_CalcTagsECC */
+#include "yaffs_tagscompat.h"	/* for yaffs_calc_tags_ecc */
+#include "yaffs_linux.h"
 
 #include "linux/kernel.h"
 #include "linux/version.h"
@@ -36,8 +38,6 @@
 /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
 #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 
-const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.10 2009-03-09 07:41:10 charles Exp $";
-
 #ifndef CONFIG_YAFFS_9BYTE_TAGS
 # define YTAG1_SIZE 8
 #else
@@ -51,12 +51,12 @@ const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.10 2009-03-09 07:4
  * adjust 'oobfree' to match your existing Yaffs data.
  *
  * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the
- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to
+ * page_status byte (at NAND spare offset 4) scattered/gathered from/to
  * the 9th byte.
  *
  * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5
- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P
- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus
+ * We have/need PackedTags1 plus page_status: T0,T1,T2,T3,T4,T5,T6,T7,P
+ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the page_status
  * byte and B is the small-page bad-block indicator byte.
  */
 static struct nand_ecclayout nand_oob_16 = {
@@ -88,42 +88,40 @@ static struct nand_ecclayout nand_oob_16 = {
  * Any underlying MTD error results in YAFFS_FAIL.
  * Returns YAFFS_OK or YAFFS_FAIL.
  */
-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
-	int chunkInNAND, const __u8 *data, const yaffs_ExtendedTags *etags)
+int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev,
+	int nand_chunk, const __u8 *data, const yaffs_ext_tags *etags)
 {
-	struct mtd_info *mtd = dev->genericDevice;
-	int chunkBytes = dev->nDataBytesPerChunk;
-	loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
+	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+	int chunkBytes = dev->data_bytes_per_chunk;
+	loff_t addr = ((loff_t)nand_chunk) * chunkBytes;
 	struct mtd_oob_ops ops;
 	yaffs_PackedTags1 pt1;
 	int retval;
 
-	/* we assume that PackedTags1 and yaffs_Tags are compatible */
+	/* we assume that PackedTags1 and yaffs_tags_t are compatible */
 	compile_time_assertion(sizeof(yaffs_PackedTags1) == 12);
-	compile_time_assertion(sizeof(yaffs_Tags) == 8);
-
-	dev->nPageWrites++;
+	compile_time_assertion(sizeof(yaffs_tags_t) == 8);
 
 	yaffs_PackTags1(&pt1, etags);
-	yaffs_CalcTagsECC((yaffs_Tags *)&pt1);
+	yaffs_calc_tags_ecc((yaffs_tags_t *)&pt1);
 
 	/* When deleting a chunk, the upper layer provides only skeletal
-	 * etags, one with chunkDeleted set.  However, we need to update the
+	 * etags, one with is_deleted set.  However, we need to update the
 	 * tags, not erase them completely.  So we use the NAND write property
 	 * that only zeroed-bits stick and set tag bytes to all-ones and
 	 * zero just the (not) deleted bit.
 	 */
 #ifndef CONFIG_YAFFS_9BYTE_TAGS
-	if (etags->chunkDeleted) {
+	if (etags->is_deleted) {
 		memset(&pt1, 0xff, 8);
 		/* clear delete status bit to indicate deleted */
 		pt1.deleted = 0;
 	}
 #else
 	((__u8 *)&pt1)[8] = 0xff;
-	if (etags->chunkDeleted) {
+	if (etags->is_deleted) {
 		memset(&pt1, 0xff, 8);
-		/* zero pageStatus byte to indicate deleted */
+		/* zero page_status byte to indicate deleted */
 		((__u8 *)&pt1)[8] = 0;
 	}
 #endif
@@ -137,20 +135,20 @@ int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
 
 	retval = mtd->write_oob(mtd, addr, &ops);
 	if (retval) {
-		yaffs_trace(YAFFS_TRACE_MTD,
-			"write_oob failed, chunk %d, mtd error %d\n",
-			chunkInNAND, retval);
+		T(YAFFS_TRACE_MTD,
+			(TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR),
+			nand_chunk, retval));
 	}
 	return retval ? YAFFS_FAIL : YAFFS_OK;
 }
 
-/* Return with empty ExtendedTags but add eccResult.
+/* Return with empty ExtendedTags but add ecc_result.
  */
-static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval)
+static int rettags(yaffs_ext_tags *etags, int ecc_result, int retval)
 {
 	if (etags) {
 		memset(etags, 0, sizeof(*etags));
-		etags->eccResult = eccResult;
+		etags->ecc_result = ecc_result;
 	}
 	return retval;
 }
@@ -158,30 +156,28 @@ static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval)
 /* Read a chunk (page) from NAND.
  *
  * Caller expects ExtendedTags data to be usable even on error; that is,
- * all members except eccResult and blockBad are zeroed.
+ * all members except ecc_result and block_bad are zeroed.
  *
  *  - Check ECC results for data (if applicable)
  *  - Check for blank/erased block (return empty ExtendedTags if blank)
  *  - Check the PackedTags1 mini-ECC (correct if necessary/possible)
  *  - Convert PackedTags1 to ExtendedTags
- *  - Update eccResult and blockBad members to refect state.
+ *  - Update ecc_result and block_bad members to refect state.
  *
  * Returns YAFFS_OK or YAFFS_FAIL.
  */
-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
-	int chunkInNAND, __u8 *data, yaffs_ExtendedTags *etags)
+int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev,
+	int nand_chunk, __u8 *data, yaffs_ext_tags *etags)
 {
-	struct mtd_info *mtd = dev->genericDevice;
-	int chunkBytes = dev->nDataBytesPerChunk;
-	loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
+	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+	int chunkBytes = dev->data_bytes_per_chunk;
+	loff_t addr = ((loff_t)nand_chunk) * chunkBytes;
 	int eccres = YAFFS_ECC_RESULT_NO_ERROR;
 	struct mtd_oob_ops ops;
 	yaffs_PackedTags1 pt1;
 	int retval;
 	int deleted;
 
-	dev->nPageReads++;
-
 	memset(&ops, 0, sizeof(ops));
 	ops.mode = MTD_OOB_AUTO;
 	ops.len = (data) ? chunkBytes : 0;
@@ -200,9 +196,9 @@ int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
 	 */
 	retval = mtd->read_oob(mtd, addr, &ops);
 	if (retval) {
-		yaffs_trace(YAFFS_TRACE_MTD,
-			"read_oob failed, chunk %d, mtd error %d\n",
-			chunkInNAND, retval);
+		T(YAFFS_TRACE_MTD,
+			(TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR),
+			nand_chunk, retval));
 	}
 
 	switch (retval) {
@@ -213,23 +209,23 @@ int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
 	case -EUCLEAN:
 		/* MTD's ECC fixed the data */
 		eccres = YAFFS_ECC_RESULT_FIXED;
-		dev->eccFixed++;
+		dev->n_ecc_fixed++;
 		break;
 
 	case -EBADMSG:
 		/* MTD's ECC could not fix the data */
-		dev->eccUnfixed++;
+		dev->n_ecc_unfixed++;
 		/* fall into... */
 	default:
 		rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
-		etags->blockBad = (mtd->block_isbad)(mtd, addr);
+		etags->block_bad = (mtd->block_isbad)(mtd, addr);
 		return YAFFS_FAIL;
 	}
 
 	/* Check for a blank/erased chunk.
 	 */
-	if (yaffs_CheckFF((__u8 *)&pt1, 8)) {
-		/* when blank, upper layers want eccResult to be <= NO_ERROR */
+	if (yaffs_check_ff((__u8 *)&pt1, 8)) {
+		/* when blank, upper layers want ecc_result to be <= NO_ERROR */
 		return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
 	}
 
@@ -241,37 +237,37 @@ int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
 	deleted = !pt1.deleted;
 	pt1.deleted = 1;
 #else
-	deleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
+	deleted = (yaffs_count_bits(((__u8 *)&pt1)[8]) < 7);
 #endif
 
 	/* Check the packed tags mini-ECC and correct if necessary/possible.
 	 */
-	retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1);
+	retval = yaffs_check_tags_ecc((yaffs_tags_t *)&pt1);
 	switch (retval) {
 	case 0:
 		/* no tags error, use MTD result */
 		break;
 	case 1:
 		/* recovered tags-ECC error */
-		dev->tagsEccFixed++;
+		dev->n_tags_ecc_fixed++;
 		if (eccres == YAFFS_ECC_RESULT_NO_ERROR)
 			eccres = YAFFS_ECC_RESULT_FIXED;
 		break;
 	default:
 		/* unrecovered tags-ECC error */
-		dev->tagsEccUnfixed++;
+		dev->n_tags_ecc_unfixed++;
 		return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL);
 	}
 
 	/* Unpack the tags to extended form and set ECC result.
-	 * [set shouldBeFF just to keep yaffs_UnpackTags1 happy]
+	 * [set shouldBeFF just to keep yaffs_unpack_tags1 happy]
 	 */
 	pt1.shouldBeFF = 0xFFFFFFFF;
-	yaffs_UnpackTags1(etags, &pt1);
-	etags->eccResult = eccres;
+	yaffs_unpack_tags1(etags, &pt1);
+	etags->ecc_result = eccres;
 
 	/* Set deleted state */
-	etags->chunkDeleted = deleted;
+	etags->is_deleted = deleted;
 	return YAFFS_OK;
 }
 
@@ -282,15 +278,15 @@ int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
  *
  * Returns YAFFS_OK or YAFFS_FAIL.
  */
-int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
+int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no)
 {
-	struct mtd_info *mtd = dev->genericDevice;
-	int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
+	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+	int blocksize = dev->param.chunks_per_block * dev->data_bytes_per_chunk;
 	int retval;
 
-	yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo);
+	T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), block_no));
 
-	retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
+	retval = mtd->block_markbad(mtd, (loff_t)blocksize * block_no);
 	return (retval) ? YAFFS_FAIL : YAFFS_OK;
 }
 
@@ -305,9 +301,9 @@ static int nandmtd1_TestPrerequists(struct mtd_info *mtd)
 	int oobavail = mtd->ecclayout->oobavail;
 
 	if (oobavail < YTAG1_SIZE) {
-		yaffs_trace(YAFFS_TRACE_ERROR,
-			"mtd device has only %d bytes for tags, need %d\n",
-			oobavail, YTAG1_SIZE);
+		T(YAFFS_TRACE_ERROR,
+			(TSTR("mtd device has only %d bytes for tags, need %d"TENDSTR),
+			oobavail, YTAG1_SIZE));
 		return YAFFS_FAIL;
 	}
 	return YAFFS_OK;
@@ -322,13 +318,13 @@ static int nandmtd1_TestPrerequists(struct mtd_info *mtd)
  *
  * Always returns YAFFS_OK.
  */
-int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-	yaffs_BlockState *pState, __u32 *pSequenceNumber)
+int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
+	yaffs_block_state_t *pState, __u32 *pSequenceNumber)
 {
-	struct mtd_info *mtd = dev->genericDevice;
-	int chunkNo = blockNo * dev->nChunksPerBlock;
-	loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk;
-	yaffs_ExtendedTags etags;
+	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+	int chunkNo = block_no * dev->param.chunks_per_block;
+	loff_t addr = (loff_t)chunkNo * dev->data_bytes_per_chunk;
+	yaffs_ext_tags etags;
 	int state = YAFFS_BLOCK_STATE_DEAD;
 	int seqnum = 0;
 	int retval;
@@ -340,17 +336,17 @@ int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
 		return YAFFS_FAIL;
 
 	retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
-	etags.blockBad = (mtd->block_isbad)(mtd, addr);
-	if (etags.blockBad) {
-		yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
-			"block %d is marked bad\n", blockNo);
+	etags.block_bad = (mtd->block_isbad)(mtd, addr);
+	if (etags.block_bad) {
+		T(YAFFS_TRACE_BAD_BLOCKS,
+			(TSTR("block %d is marked bad"TENDSTR), block_no));
 		state = YAFFS_BLOCK_STATE_DEAD;
-	} else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) {
+	} else if (etags.ecc_result != YAFFS_ECC_RESULT_NO_ERROR) {
 		/* bad tags, need to look more closely */
 		state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
-	} else if (etags.chunkUsed) {
+	} else if (etags.chunk_used) {
 		state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
-		seqnum = etags.sequenceNumber;
+		seqnum = etags.seq_number;
 	} else {
 		state = YAFFS_BLOCK_STATE_EMPTY;
 	}

target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * This program is free software; you can redistribute it and/or modify
@@ -14,15 +14,15 @@
 #ifndef __YAFFS_MTDIF1_H__
 #define __YAFFS_MTDIF1_H__
 
-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
-	const __u8 *data, const yaffs_ExtendedTags *tags);
+int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk,
+	const __u8 *data, const yaffs_ext_tags *tags);
 
-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
-	__u8 *data, yaffs_ExtendedTags *tags);
+int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
+	__u8 *data, yaffs_ext_tags *tags);
 
-int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no);
 
-int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-	yaffs_BlockState *state, __u32 *sequenceNumber);
+int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
+	yaffs_block_state_t *state, __u32 *seq_number);
 
 #endif

target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -13,11 +13,8 @@
 
 /* mtd interface for YAFFS2 */
 
-const char *yaffs_mtdif2_c_version =
-	"$Id: yaffs_mtdif2.c,v 1.23 2009-03-06 17:20:53 wookey Exp $";
-
 #include "yportenv.h"
-
+#include "yaffs_trace.h"
 
 #include "yaffs_mtdif2.h"
 
@@ -27,15 +24,17 @@ const char *yaffs_mtdif2_c_version =
 
 #include "yaffs_packedtags2.h"
 
+#include "yaffs_linux.h"
+
 /* NB For use with inband tags....
  * We assume that the data buffer is of size totalBytersPerChunk so that we can also
  * use it to load the tags.
  */
-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
+int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk,
 				      const __u8 *data,
-				      const yaffs_ExtendedTags *tags)
+				      const yaffs_ext_tags *tags)
 {
-	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
 #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 	struct mtd_oob_ops ops;
 #else
@@ -47,13 +46,16 @@ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
 
 	yaffs_PackedTags2 pt;
 
+	int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
+	void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t : (void *)&pt;
+
 	T(YAFFS_TRACE_MTD,
 	  (TSTR
 	   ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
-	    TENDSTR), chunkInNAND, data, tags));
+	    TENDSTR), nand_chunk, data, tags));
 
 
-	addr  = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
+	addr  = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
 
 	/* For yaffs2 writing there must be both data and tags.
 	 * If we're using inband tags, then the tags are stuffed into
@@ -61,30 +63,30 @@ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
 	 */
 	if (!data || !tags)
 		BUG();
-	else if (dev->inbandTags) {
+	else if (dev->param.inband_tags) {
 		yaffs_PackedTags2TagsPart *pt2tp;
-		pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk);
+		pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->data_bytes_per_chunk);
 		yaffs_PackTags2TagsPart(pt2tp, tags);
 	} else
-		yaffs_PackTags2(&pt, tags);
+		yaffs_PackTags2(&pt, tags, !dev->param.no_tags_ecc);
 
 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 	ops.mode = MTD_OOB_AUTO;
-	ops.ooblen = (dev->inbandTags) ? 0 : sizeof(pt);
-	ops.len = dev->totalBytesPerChunk;
+	ops.ooblen = (dev->param.inband_tags) ? 0 : packed_tags_size;
+	ops.len = dev->param.total_bytes_per_chunk;
 	ops.ooboffs = 0;
 	ops.datbuf = (__u8 *)data;
-	ops.oobbuf = (dev->inbandTags) ? NULL : (void *)&pt;
+	ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr;
 	retval = mtd->write_oob(mtd, addr, &ops);
 
 #else
-	if (!dev->inbandTags) {
+	if (!dev->param.inband_tags) {
 		retval =
-		    mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
-				   &dummy, data, (__u8 *) &pt, NULL);
+		    mtd->write_ecc(mtd, addr, dev->data_bytes_per_chunk,
+				   &dummy, data, (__u8 *) packed_tags_ptr, NULL);
 	} else {
 		retval =
-		    mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy,
+		    mtd->write(mtd, addr, dev->param.total_bytes_per_chunk, &dummy,
 			       data);
 	}
 #endif
@@ -95,10 +97,10 @@ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
 		return YAFFS_FAIL;
 }
 
-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
-				       __u8 *data, yaffs_ExtendedTags *tags)
+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
+				       __u8 *data, yaffs_ext_tags *tags)
 {
-	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
 #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 	struct mtd_oob_ops ops;
 #endif
@@ -106,20 +108,23 @@ int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
 	int retval = 0;
 	int localData = 0;
 
-	loff_t addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
+	loff_t addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
 
 	yaffs_PackedTags2 pt;
 
+	int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
+	void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t: (void *)&pt;
+
 	T(YAFFS_TRACE_MTD,
 	  (TSTR
 	   ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"
-	    TENDSTR), chunkInNAND, data, tags));
+	    TENDSTR), nand_chunk, data, tags));
 
-	if (dev->inbandTags) {
+	if (dev->param.inband_tags) {
 
 		if (!data) {
 			localData = 1;
-			data = yaffs_GetTempBuffer(dev, __LINE__);
+			data = yaffs_get_temp_buffer(dev, __LINE__);
 		}
 
 
@@ -127,30 +132,30 @@ int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
 
 
 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
-	if (dev->inbandTags || (data && !tags))
-		retval = mtd->read(mtd, addr, dev->totalBytesPerChunk,
+	if (dev->param.inband_tags || (data && !tags))
+		retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk,
 				&dummy, data);
 	else if (tags) {
 		ops.mode = MTD_OOB_AUTO;
-		ops.ooblen = sizeof(pt);
-		ops.len = data ? dev->nDataBytesPerChunk : sizeof(pt);
+		ops.ooblen = packed_tags_size;
+		ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size;
 		ops.ooboffs = 0;
 		ops.datbuf = data;
-		ops.oobbuf = dev->spareBuffer;
+		ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer;
 		retval = mtd->read_oob(mtd, addr, &ops);
 	}
 #else
-	if (!dev->inbandTags && data && tags) {
+	if (!dev->param.inband_tags && data && tags) {
 
-		retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
+		retval = mtd->read_ecc(mtd, addr, dev->data_bytes_per_chunk,
 					  &dummy, data, dev->spareBuffer,
 					  NULL);
 	} else {
 		if (data)
 			retval =
-			    mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
+			    mtd->read(mtd, addr, dev->data_bytes_per_chunk, &dummy,
 				      data);
-		if (!dev->inbandTags && tags)
+		if (!dev->param.inband_tags && tags)
 			retval =
 			    mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
 					  dev->spareBuffer);
@@ -158,41 +163,47 @@ int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
 #endif
 
 
-	if (dev->inbandTags) {
+	if (dev->param.inband_tags) {
 		if (tags) {
 			yaffs_PackedTags2TagsPart *pt2tp;
-			pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk];
-			yaffs_UnpackTags2TagsPart(tags, pt2tp);
+			pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->data_bytes_per_chunk];
+			yaffs_unpack_tags2tags_part(tags, pt2tp);
 		}
 	} else {
 		if (tags) {
-			memcpy(&pt, dev->spareBuffer, sizeof(pt));
-			yaffs_UnpackTags2(tags, &pt);
+			memcpy(packed_tags_ptr, yaffs_dev_to_lc(dev)->spareBuffer, packed_tags_size);
+			yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc);
 		}
 	}
 
 	if (localData)
-		yaffs_ReleaseTempBuffer(dev, data, __LINE__);
+		yaffs_release_temp_buffer(dev, data, __LINE__);
 
-	if (tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR)
-		tags->eccResult = YAFFS_ECC_RESULT_UNFIXED;
+	if (tags && retval == -EBADMSG && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
+		tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED;
+		dev->n_ecc_unfixed++;
+	}
+	if(tags && retval == -EUCLEAN && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
+		tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
+		dev->n_ecc_fixed++;
+	}
 	if (retval == 0)
 		return YAFFS_OK;
 	else
 		return YAFFS_FAIL;
 }
 
-int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
+int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no)
 {
-	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
 	int retval;
 	T(YAFFS_TRACE_MTD,
-	  (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo));
+	  (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no));
 
 	retval =
 	    mtd->block_markbad(mtd,
-			       blockNo * dev->nChunksPerBlock *
-			       dev->totalBytesPerChunk);
+			       block_no * dev->param.chunks_per_block *
+			       dev->param.total_bytes_per_chunk);
 
 	if (retval == 0)
 		return YAFFS_OK;
@@ -201,41 +212,41 @@ int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
 
 }
 
-int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-			    yaffs_BlockState *state, __u32 *sequenceNumber)
+int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
+			    yaffs_block_state_t *state, __u32 *seq_number)
 {
-	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
 	int retval;
 
 	T(YAFFS_TRACE_MTD,
-	  (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo));
+	  (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no));
 	retval =
 	    mtd->block_isbad(mtd,
-			     blockNo * dev->nChunksPerBlock *
-			     dev->totalBytesPerChunk);
+			     block_no * dev->param.chunks_per_block *
+			     dev->param.total_bytes_per_chunk);
 
 	if (retval) {
 		T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR)));
 
 		*state = YAFFS_BLOCK_STATE_DEAD;
-		*sequenceNumber = 0;
+		*seq_number = 0;
 	} else {
-		yaffs_ExtendedTags t;
+		yaffs_ext_tags t;
 		nandmtd2_ReadChunkWithTagsFromNAND(dev,
-						   blockNo *
-						   dev->nChunksPerBlock, NULL,
+						   block_no *
+						   dev->param.chunks_per_block, NULL,
 						   &t);
 
-		if (t.chunkUsed) {
-			*sequenceNumber = t.sequenceNumber;
+		if (t.chunk_used) {
+			*seq_number = t.seq_number;
 			*state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
 		} else {
-			*sequenceNumber = 0;
+			*seq_number = 0;
 			*state = YAFFS_BLOCK_STATE_EMPTY;
 		}
 	}
 	T(YAFFS_TRACE_MTD,
-	  (TSTR("block is bad seq %d state %d" TENDSTR), *sequenceNumber,
+	  (TSTR("block is bad seq %d state %d" TENDSTR), *seq_number,
 	   *state));
 
 	if (retval == 0)

target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -17,13 +17,13 @@
 #define __YAFFS_MTDIF2_H__
 
 #include "yaffs_guts.h"
-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
+int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk,
 				const __u8 *data,
-				const yaffs_ExtendedTags *tags);
-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
-				__u8 *data, yaffs_ExtendedTags *tags);
-int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
-int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-			yaffs_BlockState *state, __u32 *sequenceNumber);
+				const yaffs_ext_tags *tags);
+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
+				__u8 *data, yaffs_ext_tags *tags);
+int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no);
+int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
+			yaffs_block_state_t *state, __u32 *seq_number);
 
 #endif

target/linux/generic/files/fs/yaffs2/yaffs_nameval.c

@@ -0,0 +1,197 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 simple implementation of a name-value store assumes a small number of values and fits
+ * into a small finite buffer.
+ *
+ * Each attribute is stored as a record:
+ *  sizeof(int) bytes   record size.
+ *  strnlen+1 bytes name null terminated.
+ *  nbytes    value.
+ *  ----------
+ *  total size  stored in record size 
+ *
+ * This code has not been tested with unicode yet.
+ */
+
+
+#include "yaffs_nameval.h"
+
+#include "yportenv.h"
+ 
+static int nval_find(const char *xb, int xb_size, const YCHAR *name,
+		int *exist_size)
+{
+	int pos=0;
+	int size;
+
+	memcpy(&size,xb,sizeof(int));
+	while(size > 0 && (size < xb_size) && (pos + size < xb_size)){
+		if(yaffs_strncmp((YCHAR *)(xb+pos+sizeof(int)),name,size) == 0){
+			if(exist_size)
+				*exist_size = size;
+			return pos;
+		}
+		pos += size;
+		if(pos < xb_size -sizeof(int))
+			memcpy(&size,xb + pos,sizeof(int));
+		else
+			size = 0;
+	}
+	if(exist_size)
+		*exist_size = 0;
+	return -1;
+}
+
+static int nval_used(const char *xb, int xb_size)
+{
+	int pos=0;
+	int size;
+
+	memcpy(&size,xb + pos,sizeof(int));
+	while(size > 0 && (size < xb_size) && (pos + size < xb_size)){
+		pos += size;
+		if(pos < xb_size -sizeof(int))
+			memcpy(&size,xb + pos,sizeof(int));
+		else
+			size = 0;
+	}
+	return pos;
+}
+
+int nval_del(char *xb, int xb_size, const YCHAR *name)
+{
+	int pos  = nval_find(xb, xb_size, name, NULL);
+	int size;
+	
+	if(pos >= 0 && pos < xb_size){
+		/* Find size, shift rest over this record, then zero out the rest of buffer */
+		memcpy(&size,xb+pos,sizeof(int));
+		memcpy(xb + pos, xb + pos + size, xb_size - (pos + size));
+		memset(xb + (xb_size - size),0,size);
+		return 0;
+	} else
+		return -ENODATA;
+}
+
+int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags)
+{
+	int pos;
+	int namelen = yaffs_strnlen(name,xb_size);
+	int reclen;
+	int size_exist = 0;
+	int space;
+	int start;
+
+	pos = nval_find(xb,xb_size,name, &size_exist);
+
+	if(flags & XATTR_CREATE && pos >= 0)
+		return -EEXIST;
+	if(flags & XATTR_REPLACE && pos < 0)
+		return -ENODATA;
+
+	start = nval_used(xb,xb_size);
+	space = xb_size - start + size_exist;
+
+	reclen = (sizeof(int) + namelen + 1 + bsize);
+
+	if(reclen > space)
+		return -ENOSPC;
+
+	if(pos >= 0){
+		nval_del(xb,xb_size,name);
+		start = nval_used(xb, xb_size);
+	}
+
+	pos = start;
+
+	memcpy(xb + pos,&reclen,sizeof(int));
+	pos +=sizeof(int);
+	yaffs_strncpy((YCHAR *)(xb + pos), name, reclen);
+	pos+= (namelen+1);
+	memcpy(xb + pos,buf,bsize);
+	return 0;
+}
+
+int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize)
+{
+	int pos = nval_find(xb,xb_size,name,NULL);
+	int size;
+	
+	if(pos >= 0 && pos< xb_size){
+		
+		memcpy(&size,xb +pos,sizeof(int));
+		pos+=sizeof(int); /* advance past record length */
+		size -= sizeof(int);
+
+		/* Advance over name string */
+		while(xb[pos] && size > 0 && pos < xb_size){
+			pos++;
+			size--;
+		}
+		/*Advance over NUL */
+		pos++;
+		size--;
+
+		if(size <= bsize){
+			memcpy(buf,xb + pos,size);
+			return size;
+		}
+		
+	}
+	if(pos >= 0)
+		return -ERANGE;
+	else
+		return -ENODATA;
+}
+
+int nval_list(const char *xb, int xb_size, char *buf, int bsize)
+{
+	int pos = 0;
+	int size;
+	int name_len;
+	int ncopied = 0;
+	int filled = 0;
+
+	memcpy(&size,xb + pos,sizeof(int));
+	while(size > sizeof(int) && size <= xb_size && (pos + size) < xb_size && !filled){
+		pos+= sizeof(int);
+		size-=sizeof(int);
+		name_len = yaffs_strnlen((YCHAR *)(xb + pos), size);
+		if(ncopied + name_len + 1 < bsize){
+			memcpy(buf,xb+pos,name_len * sizeof(YCHAR));
+			buf+= name_len;
+			*buf = '\0';
+			buf++;
+			if(sizeof(YCHAR) > 1){
+				*buf = '\0';
+				buf++;
+			}
+			ncopied += (name_len+1);
+		} else
+			filled = 1;
+		pos+=size;
+		if(pos < xb_size -sizeof(int))
+			memcpy(&size,xb + pos,sizeof(int));
+		else
+			size = 0;
+	}
+	return ncopied;
+}
+
+
+int nval_hasvalues(const char *xb, int xb_size)
+{
+	return nval_used(xb, xb_size) > 0;
+}

target/linux/generic/files/fs/yaffs2/yaffs_nameval.h

@@ -0,0 +1,25 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+#ifndef __NAMEVAL_H__
+#define __NAMEVAL_H__
+
+#include "yportenv.h"
+
+int nval_del(char *xb, int xb_size, const YCHAR *name);
+int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags);
+int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize);
+int nval_list(const char *xb, int xb_size, char *buf, int bsize);
+int nval_hasvalues(const char *xb, int xb_size);
+#endif

target/linux/generic/files/fs/yaffs2/yaffs_nand.c

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -11,124 +11,129 @@
  * published by the Free Software Foundation.
  */
 
-const char *yaffs_nand_c_version =
-	"$Id: yaffs_nand.c,v 1.10 2009-03-06 17:20:54 wookey Exp $";
-
 #include "yaffs_nand.h"
 #include "yaffs_tagscompat.h"
 #include "yaffs_tagsvalidity.h"
 
 #include "yaffs_getblockinfo.h"
 
-int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk,
 					   __u8 *buffer,
-					   yaffs_ExtendedTags *tags)
+					   yaffs_ext_tags *tags)
 {
 	int result;
-	yaffs_ExtendedTags localTags;
+	yaffs_ext_tags localTags;
+
+	int realignedChunkInNAND = nand_chunk - dev->chunk_offset;
 
-	int realignedChunkInNAND = chunkInNAND - dev->chunkOffset;
+	dev->n_page_reads++;
 
 	/* If there are no tags provided, use local tags to get prioritised gc working */
 	if (!tags)
 		tags = &localTags;
 
-	if (dev->readChunkWithTagsFromNAND)
-		result = dev->readChunkWithTagsFromNAND(dev, realignedChunkInNAND, buffer,
+	if (dev->param.read_chunk_tags_fn)
+		result = dev->param.read_chunk_tags_fn(dev, realignedChunkInNAND, buffer,
 						      tags);
 	else
-		result = yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev,
+		result = yaffs_tags_compat_rd(dev,
 									realignedChunkInNAND,
 									buffer,
 									tags);
 	if (tags &&
-	   tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR) {
+	   tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
 
-		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock);
-		yaffs_HandleChunkError(dev, bi);
+		yaffs_block_info_t *bi;
+		bi = yaffs_get_block_info(dev, nand_chunk/dev->param.chunks_per_block);
+		yaffs_handle_chunk_error(dev, bi);
 	}
 
 	return result;
 }
 
-int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,
-						   int chunkInNAND,
+int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev,
+						   int nand_chunk,
 						   const __u8 *buffer,
-						   yaffs_ExtendedTags *tags)
+						   yaffs_ext_tags *tags)
 {
-	chunkInNAND -= dev->chunkOffset;
+
+	dev->n_page_writes++;
+
+	nand_chunk -= dev->chunk_offset;
 
 
 	if (tags) {
-		tags->sequenceNumber = dev->sequenceNumber;
-		tags->chunkUsed = 1;
-		if (!yaffs_ValidateTags(tags)) {
+		tags->seq_number = dev->seq_number;
+		tags->chunk_used = 1;
+		if (!yaffs_validate_tags(tags)) {
 			T(YAFFS_TRACE_ERROR,
 			  (TSTR("Writing uninitialised tags" TENDSTR)));
 			YBUG();
 		}
 		T(YAFFS_TRACE_WRITE,
-		  (TSTR("Writing chunk %d tags %d %d" TENDSTR), chunkInNAND,
-		   tags->objectId, tags->chunkId));
+		  (TSTR("Writing chunk %d tags %d %d" TENDSTR), nand_chunk,
+		   tags->obj_id, tags->chunk_id));
 	} else {
 		T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR)));
 		YBUG();
 	}
 
-	if (dev->writeChunkWithTagsToNAND)
-		return dev->writeChunkWithTagsToNAND(dev, chunkInNAND, buffer,
+	if (dev->param.write_chunk_tags_fn)
+		return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer,
 						     tags);
 	else
-		return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev,
-								       chunkInNAND,
+		return yaffs_tags_compat_wr(dev,
+								       nand_chunk,
 								       buffer,
 								       tags);
 }
 
-int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo)
+int yaffs_mark_bad(yaffs_dev_t *dev, int block_no)
 {
-	blockNo -= dev->blockOffset;
+	block_no -= dev->block_offset;
+
 
-;
-	if (dev->markNANDBlockBad)
-		return dev->markNANDBlockBad(dev, blockNo);
+	if (dev->param.bad_block_fn)
+		return dev->param.bad_block_fn(dev, block_no);
 	else
-		return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo);
+		return yaffs_tags_compat_mark_bad(dev, block_no);
 }
 
-int yaffs_QueryInitialBlockState(yaffs_Device *dev,
-						 int blockNo,
-						 yaffs_BlockState *state,
-						 __u32 *sequenceNumber)
+int yaffs_query_init_block_state(yaffs_dev_t *dev,
+						 int block_no,
+						 yaffs_block_state_t *state,
+						 __u32 *seq_number)
 {
-	blockNo -= dev->blockOffset;
+	block_no -= dev->block_offset;
 
-	if (dev->queryNANDBlock)
-		return dev->queryNANDBlock(dev, blockNo, state, sequenceNumber);
+	if (dev->param.query_block_fn)
+		return dev->param.query_block_fn(dev, block_no, state, seq_number);
 	else
-		return yaffs_TagsCompatabilityQueryNANDBlock(dev, blockNo,
+		return yaffs_tags_compat_query_block(dev, block_no,
 							     state,
-							     sequenceNumber);
+							     seq_number);
 }
 
 
-int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
-				  int blockInNAND)
+int yaffs_erase_block(struct yaffs_dev_s *dev,
+				  int flash_block)
 {
 	int result;
 
-	blockInNAND -= dev->blockOffset;
+	flash_block -= dev->block_offset;
 
+	dev->n_erasures++;
 
-	dev->nBlockErasures++;
-	result = dev->eraseBlockInNAND(dev, blockInNAND);
+	result = dev->param.erase_fn(dev, flash_block);
 
 	return result;
 }
 
-int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev)
+int yaffs_init_nand(struct yaffs_dev_s *dev)
 {
-	return dev->initialiseNAND(dev);
+	if(dev->param.initialise_flash_fn)
+		return dev->param.initialise_flash_fn(dev);
+	return YAFFS_OK;
 }
 
 

target/linux/generic/files/fs/yaffs2/yaffs_nand.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -19,26 +19,26 @@
 
 
 
-int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk,
 					__u8 *buffer,
-					yaffs_ExtendedTags *tags);
+					yaffs_ext_tags *tags);
 
-int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,
-						int chunkInNAND,
+int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev,
+						int nand_chunk,
 						const __u8 *buffer,
-						yaffs_ExtendedTags *tags);
+						yaffs_ext_tags *tags);
 
-int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo);
+int yaffs_mark_bad(yaffs_dev_t *dev, int block_no);
 
-int yaffs_QueryInitialBlockState(yaffs_Device *dev,
-						int blockNo,
-						yaffs_BlockState *state,
-						unsigned *sequenceNumber);
+int yaffs_query_init_block_state(yaffs_dev_t *dev,
+						int block_no,
+						yaffs_block_state_t *state,
+						unsigned *seq_number);
 
-int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
-				  int blockInNAND);
+int yaffs_erase_block(struct yaffs_dev_s *dev,
+				  int flash_block);
 
-int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev);
+int yaffs_init_nand(struct yaffs_dev_s *dev);
 
 #endif
 

target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -20,18 +20,18 @@
 
 #include "yaffs_guts.h"
 
-int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
-					int chunkInNAND, const __u8 *data,
-					const yaffs_ExtendedTags *tags);
-int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev,
-					 int chunkInNAND, __u8 *data,
-					 yaffs_ExtendedTags *tags);
-int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
-int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-			      yaffs_BlockState *state, __u32 *sequenceNumber);
-int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
-				int blockInNAND);
-int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev);
+int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_dev_s *dev,
+					int nand_chunk, const __u8 *data,
+					const yaffs_ext_tags *tags);
+int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_dev_s *dev,
+					 int nand_chunk, __u8 *data,
+					 yaffs_ext_tags *tags);
+int nandemul2k_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no);
+int nandemul2k_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
+			      yaffs_block_state_t *state, __u32 *seq_number);
+int nandemul2k_EraseBlockInNAND(struct yaffs_dev_s *dev,
+				int flash_block);
+int nandemul2k_InitialiseNAND(struct yaffs_dev_s *dev);
 int nandemul2k_GetBytesPerChunk(void);
 int nandemul2k_GetChunksPerBlock(void);
 int nandemul2k_GetNumberOfBlocks(void);

target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -14,37 +14,37 @@
 #include "yaffs_packedtags1.h"
 #include "yportenv.h"
 
-void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t)
+void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t)
 {
-	pt->chunkId = t->chunkId;
-	pt->serialNumber = t->serialNumber;
-	pt->byteCount = t->byteCount;
-	pt->objectId = t->objectId;
+	pt->chunk_id = t->chunk_id;
+	pt->serial_number = t->serial_number;
+	pt->n_bytes = t->n_bytes;
+	pt->obj_id = t->obj_id;
 	pt->ecc = 0;
-	pt->deleted = (t->chunkDeleted) ? 0 : 1;
+	pt->deleted = (t->is_deleted) ? 0 : 1;
 	pt->unusedStuff = 0;
 	pt->shouldBeFF = 0xFFFFFFFF;
 
 }
 
-void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt)
+void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt)
 {
 	static const __u8 allFF[] =
 	    { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 0xff };
 
 	if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) {
-		t->blockBad = 0;
+		t->block_bad = 0;
 		if (pt->shouldBeFF != 0xFFFFFFFF)
-			t->blockBad = 1;
-		t->chunkUsed = 1;
-		t->objectId = pt->objectId;
-		t->chunkId = pt->chunkId;
-		t->byteCount = pt->byteCount;
-		t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
-		t->chunkDeleted = (pt->deleted) ? 0 : 1;
-		t->serialNumber = pt->serialNumber;
+			t->block_bad = 1;
+		t->chunk_used = 1;
+		t->obj_id = pt->obj_id;
+		t->chunk_id = pt->chunk_id;
+		t->n_bytes = pt->n_bytes;
+		t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+		t->is_deleted = (pt->deleted) ? 0 : 1;
+		t->serial_number = pt->serial_number;
 	} else {
-		memset(t, 0, sizeof(yaffs_ExtendedTags));
+		memset(t, 0, sizeof(yaffs_ext_tags));
 	}
 }

target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -21,10 +21,10 @@
 #include "yaffs_guts.h"
 
 typedef struct {
-	unsigned chunkId:20;
-	unsigned serialNumber:2;
-	unsigned byteCount:10;
-	unsigned objectId:18;
+	unsigned chunk_id:20;
+	unsigned serial_number:2;
+	unsigned n_bytes:10;
+	unsigned obj_id:18;
 	unsigned ecc:12;
 	unsigned deleted:1;
 	unsigned unusedStuff:1;
@@ -32,6 +32,6 @@ typedef struct {
 
 } yaffs_PackedTags1;
 
-void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t);
-void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt);
+void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t);
+void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt);
 #endif

target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -13,6 +13,7 @@
 
 #include "yaffs_packedtags2.h"
 #include "yportenv.h"
+#include "yaffs_trace.h"
 #include "yaffs_tagsvalidity.h"
 
 /* This code packs a set of extended tags into a binary structure for
@@ -24,7 +25,7 @@
  * This is defined by having the EXTRA_HEADER_INFO_FLAG set.
  */
 
-/* Extra flags applied to chunkId */
+/* Extra flags applied to chunk_id */
 
 #define EXTRA_HEADER_INFO_FLAG	0x80000000
 #define EXTRA_SHRINK_FLAG	0x40000000
@@ -42,53 +43,53 @@ static void yaffs_DumpPackedTags2TagsPart(const yaffs_PackedTags2TagsPart *ptt)
 {
 	T(YAFFS_TRACE_MTD,
 	  (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR),
-	   ptt->objectId, ptt->chunkId, ptt->byteCount,
-	   ptt->sequenceNumber));
+	   ptt->obj_id, ptt->chunk_id, ptt->n_bytes,
+	   ptt->seq_number));
 }
 static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt)
 {
 	yaffs_DumpPackedTags2TagsPart(&pt->t);
 }
 
-static void yaffs_DumpTags2(const yaffs_ExtendedTags *t)
+static void yaffs_DumpTags2(const yaffs_ext_tags *t)
 {
 	T(YAFFS_TRACE_MTD,
 	  (TSTR
 	   ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d"
-	    TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId,
-	   t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber,
-	   t->sequenceNumber));
+	    TENDSTR), t->ecc_result, t->block_bad, t->chunk_used, t->obj_id,
+	   t->chunk_id, t->n_bytes, t->is_deleted, t->serial_number,
+	   t->seq_number));
 
 }
 
 void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt,
-		const yaffs_ExtendedTags *t)
+		const yaffs_ext_tags *t)
 {
-	ptt->chunkId = t->chunkId;
-	ptt->sequenceNumber = t->sequenceNumber;
-	ptt->byteCount = t->byteCount;
-	ptt->objectId = t->objectId;
+	ptt->chunk_id = t->chunk_id;
+	ptt->seq_number = t->seq_number;
+	ptt->n_bytes = t->n_bytes;
+	ptt->obj_id = t->obj_id;
 
-	if (t->chunkId == 0 && t->extraHeaderInfoAvailable) {
+	if (t->chunk_id == 0 && t->extra_available) {
 		/* Store the extra header info instead */
-		/* We save the parent object in the chunkId */
-		ptt->chunkId = EXTRA_HEADER_INFO_FLAG
-			| t->extraParentObjectId;
-		if (t->extraIsShrinkHeader)
-			ptt->chunkId |= EXTRA_SHRINK_FLAG;
-		if (t->extraShadows)
-			ptt->chunkId |= EXTRA_SHADOWS_FLAG;
-
-		ptt->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
-		ptt->objectId |=
-		    (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT);
-
-		if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
-			ptt->byteCount = t->extraEquivalentObjectId;
-		else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE)
-			ptt->byteCount = t->extraFileLength;
+		/* We save the parent object in the chunk_id */
+		ptt->chunk_id = EXTRA_HEADER_INFO_FLAG
+			| t->extra_parent_id;
+		if (t->extra_is_shrink)
+			ptt->chunk_id |= EXTRA_SHRINK_FLAG;
+		if (t->extra_shadows)
+			ptt->chunk_id |= EXTRA_SHADOWS_FLAG;
+
+		ptt->obj_id &= ~EXTRA_OBJECT_TYPE_MASK;
+		ptt->obj_id |=
+		    (t->extra_obj_type << EXTRA_OBJECT_TYPE_SHIFT);
+
+		if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK)
+			ptt->n_bytes = t->extra_equiv_id;
+		else if (t->extra_obj_type == YAFFS_OBJECT_TYPE_FILE)
+			ptt->n_bytes = t->extra_length;
 		else
-			ptt->byteCount = 0;
+			ptt->n_bytes = 0;
 	}
 
 	yaffs_DumpPackedTags2TagsPart(ptt);
@@ -96,59 +97,56 @@ void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt,
 }
 
 
-void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t)
+void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC)
 {
 	yaffs_PackTags2TagsPart(&pt->t, t);
 
-#ifndef YAFFS_IGNORE_TAGS_ECC
-	{
-		yaffs_ECCCalculateOther((unsigned char *)&pt->t,
+	if(tagsECC)
+		yaffs_ecc_calc_other((unsigned char *)&pt->t,
 					sizeof(yaffs_PackedTags2TagsPart),
 					&pt->ecc);
-	}
-#endif
 }
 
 
-void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t,
+void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t,
 		yaffs_PackedTags2TagsPart *ptt)
 {
 
-	memset(t, 0, sizeof(yaffs_ExtendedTags));
+	memset(t, 0, sizeof(yaffs_ext_tags));
 
-	yaffs_InitialiseTags(t);
+	yaffs_init_tags(t);
 
-	if (ptt->sequenceNumber != 0xFFFFFFFF) {
-		t->blockBad = 0;
-		t->chunkUsed = 1;
-		t->objectId = ptt->objectId;
-		t->chunkId = ptt->chunkId;
-		t->byteCount = ptt->byteCount;
-		t->chunkDeleted = 0;
-		t->serialNumber = 0;
-		t->sequenceNumber = ptt->sequenceNumber;
+	if (ptt->seq_number != 0xFFFFFFFF) {
+		t->block_bad = 0;
+		t->chunk_used = 1;
+		t->obj_id = ptt->obj_id;
+		t->chunk_id = ptt->chunk_id;
+		t->n_bytes = ptt->n_bytes;
+		t->is_deleted = 0;
+		t->serial_number = 0;
+		t->seq_number = ptt->seq_number;
 
 		/* Do extra header info stuff */
 
-		if (ptt->chunkId & EXTRA_HEADER_INFO_FLAG) {
-			t->chunkId = 0;
-			t->byteCount = 0;
-
-			t->extraHeaderInfoAvailable = 1;
-			t->extraParentObjectId =
-			    ptt->chunkId & (~(ALL_EXTRA_FLAGS));
-			t->extraIsShrinkHeader =
-			    (ptt->chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0;
-			t->extraShadows =
-			    (ptt->chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0;
-			t->extraObjectType =
-			    ptt->objectId >> EXTRA_OBJECT_TYPE_SHIFT;
-			t->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
-
-			if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
-				t->extraEquivalentObjectId = ptt->byteCount;
+		if (ptt->chunk_id & EXTRA_HEADER_INFO_FLAG) {
+			t->chunk_id = 0;
+			t->n_bytes = 0;
+
+			t->extra_available = 1;
+			t->extra_parent_id =
+			    ptt->chunk_id & (~(ALL_EXTRA_FLAGS));
+			t->extra_is_shrink =
+			    (ptt->chunk_id & EXTRA_SHRINK_FLAG) ? 1 : 0;
+			t->extra_shadows =
+			    (ptt->chunk_id & EXTRA_SHADOWS_FLAG) ? 1 : 0;
+			t->extra_obj_type =
+			    ptt->obj_id >> EXTRA_OBJECT_TYPE_SHIFT;
+			t->obj_id &= ~EXTRA_OBJECT_TYPE_MASK;
+
+			if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK)
+				t->extra_equiv_id = ptt->n_bytes;
 			else
-				t->extraFileLength = ptt->byteCount;
+				t->extra_length = ptt->n_bytes;
 		}
 	}
 
@@ -158,49 +156,43 @@ void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t,
 }
 
 
-void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt)
+void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC)
 {
 
-	yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_NO_ERROR;
-
-	if (pt->t.sequenceNumber != 0xFFFFFFFF) {
-		/* Page is in use */
-#ifndef YAFFS_IGNORE_TAGS_ECC
-		{
-			yaffs_ECCOther ecc;
-			int result;
-			yaffs_ECCCalculateOther((unsigned char *)&pt->t,
-						sizeof
-						(yaffs_PackedTags2TagsPart),
-						&ecc);
-			result =
-			    yaffs_ECCCorrectOther((unsigned char *)&pt->t,
-						  sizeof
-						  (yaffs_PackedTags2TagsPart),
-						  &pt->ecc, &ecc);
-			switch (result) {
+	yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+
+	if (pt->t.seq_number != 0xFFFFFFFF &&
+	    tagsECC){
+		/* Chunk is in use and we need to do ECC */
+		
+		yaffs_ECCOther ecc;
+		int result;
+		yaffs_ecc_calc_other((unsigned char *)&pt->t,
+					sizeof(yaffs_PackedTags2TagsPart),
+					&ecc);
+		result = yaffs_ecc_correct_other((unsigned char *)&pt->t,
+						sizeof(yaffs_PackedTags2TagsPart),
+						&pt->ecc, &ecc);
+		switch (result) {
 			case 0:
-				eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+				ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
 				break;
 			case 1:
-				eccResult = YAFFS_ECC_RESULT_FIXED;
+				ecc_result = YAFFS_ECC_RESULT_FIXED;
 				break;
 			case -1:
-				eccResult = YAFFS_ECC_RESULT_UNFIXED;
+				ecc_result = YAFFS_ECC_RESULT_UNFIXED;
 				break;
 			default:
-				eccResult = YAFFS_ECC_RESULT_UNKNOWN;
-			}
+				ecc_result = YAFFS_ECC_RESULT_UNKNOWN;
 		}
-#endif
 	}
 
-	yaffs_UnpackTags2TagsPart(t, &pt->t);
+	yaffs_unpack_tags2tags_part(t, &pt->t);
 
-	t->eccResult = eccResult;
+	t->ecc_result = ecc_result;
 
 	yaffs_DumpPackedTags2(pt);
 	yaffs_DumpTags2(t);
-
 }
 

target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -22,10 +22,10 @@
 #include "yaffs_ecc.h"
 
 typedef struct {
-	unsigned sequenceNumber;
-	unsigned objectId;
-	unsigned chunkId;
-	unsigned byteCount;
+	unsigned seq_number;
+	unsigned obj_id;
+	unsigned chunk_id;
+	unsigned n_bytes;
 } yaffs_PackedTags2TagsPart;
 
 typedef struct {
@@ -34,10 +34,10 @@ typedef struct {
 } yaffs_PackedTags2;
 
 /* Full packed tags with ECC, used for oob tags */
-void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t);
-void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt);
+void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC);
+void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC);
 
 /* Only the tags part (no ECC for use with inband tags */
-void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ExtendedTags *t);
-void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, yaffs_PackedTags2TagsPart *pt);
+void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ext_tags *t);
+void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, yaffs_PackedTags2TagsPart *pt);
 #endif

target/linux/generic/files/fs/yaffs2/yaffs_qsort.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -17,7 +17,18 @@
 #ifndef __YAFFS_QSORT_H__
 #define __YAFFS_QSORT_H__
 
+#ifdef __KERNEL__
+#include <linux/sort.h>
+
+extern void yaffs_qsort(void *const base, size_t total_elems, size_t size,
+			int (*cmp)(const void *, const void *)){
+	sort(base, total_elems, size, cmp, NULL);
+}
+
+#else
+
 extern void yaffs_qsort(void *const base, size_t total_elems, size_t size,
 			int (*cmp)(const void *, const void *));
 
 #endif
+#endif

target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -15,19 +15,20 @@
 #include "yaffs_tagscompat.h"
 #include "yaffs_ecc.h"
 #include "yaffs_getblockinfo.h"
+#include "yaffs_trace.h"
 
-static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND);
+static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk);
 #ifdef NOTYET
-static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND);
-static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk);
+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
 				     const __u8 *data,
-				     const yaffs_Spare *spare);
-static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
-				    const yaffs_Spare *spare);
-static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND);
+				     const yaffs_spare *spare);
+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
+				    const yaffs_spare *spare);
+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk);
 #endif
 
-static const char yaffs_countBitsTable[256] = {
+static const char yaffs_count_bits_table[256] = {
 	0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
 	1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
 	1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
@@ -46,26 +47,26 @@ static const char yaffs_countBitsTable[256] = {
 	4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8
 };
 
-int yaffs_CountBits(__u8 x)
+int yaffs_count_bits(__u8 x)
 {
 	int retVal;
-	retVal = yaffs_countBitsTable[x];
+	retVal = yaffs_count_bits_table[x];
 	return retVal;
 }
 
 /********** Tags ECC calculations  *********/
 
-void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare)
+void yaffs_calc_ecc(const __u8 *data, yaffs_spare *spare)
 {
-	yaffs_ECCCalculate(data, spare->ecc1);
-	yaffs_ECCCalculate(&data[256], spare->ecc2);
+	yaffs_ecc_cacl(data, spare->ecc1);
+	yaffs_ecc_cacl(&data[256], spare->ecc2);
 }
 
-void yaffs_CalcTagsECC(yaffs_Tags *tags)
+void yaffs_calc_tags_ecc(yaffs_tags_t *tags)
 {
 	/* Calculate an ecc */
 
-	unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes;
+	unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes;
 	unsigned i, j;
 	unsigned ecc = 0;
 	unsigned bit = 0;
@@ -84,24 +85,24 @@ void yaffs_CalcTagsECC(yaffs_Tags *tags)
 
 }
 
-int yaffs_CheckECCOnTags(yaffs_Tags *tags)
+int yaffs_check_tags_ecc(yaffs_tags_t *tags)
 {
 	unsigned ecc = tags->ecc;
 
-	yaffs_CalcTagsECC(tags);
+	yaffs_calc_tags_ecc(tags);
 
 	ecc ^= tags->ecc;
 
 	if (ecc && ecc <= 64) {
 		/* TODO: Handle the failure better. Retire? */
-		unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes;
+		unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes;
 
 		ecc--;
 
 		b[ecc / 8] ^= (1 << (ecc & 7));
 
 		/* Now recvalc the ecc */
-		yaffs_CalcTagsECC(tags);
+		yaffs_calc_tags_ecc(tags);
 
 		return 1;	/* recovered error */
 	} else if (ecc) {
@@ -115,76 +116,73 @@ int yaffs_CheckECCOnTags(yaffs_Tags *tags)
 
 /********** Tags **********/
 
-static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr,
-				yaffs_Tags *tagsPtr)
+static void yaffs_load_tags_to_spare(yaffs_spare *sparePtr,
+				yaffs_tags_t *tagsPtr)
 {
-	yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
-
-	yaffs_CalcTagsECC(tagsPtr);
-
-	sparePtr->tagByte0 = tu->asBytes[0];
-	sparePtr->tagByte1 = tu->asBytes[1];
-	sparePtr->tagByte2 = tu->asBytes[2];
-	sparePtr->tagByte3 = tu->asBytes[3];
-	sparePtr->tagByte4 = tu->asBytes[4];
-	sparePtr->tagByte5 = tu->asBytes[5];
-	sparePtr->tagByte6 = tu->asBytes[6];
-	sparePtr->tagByte7 = tu->asBytes[7];
+	yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr;
+
+	yaffs_calc_tags_ecc(tagsPtr);
+
+	sparePtr->tb0 = tu->as_bytes[0];
+	sparePtr->tb1 = tu->as_bytes[1];
+	sparePtr->tb2 = tu->as_bytes[2];
+	sparePtr->tb3 = tu->as_bytes[3];
+	sparePtr->tb4 = tu->as_bytes[4];
+	sparePtr->tb5 = tu->as_bytes[5];
+	sparePtr->tb6 = tu->as_bytes[6];
+	sparePtr->tb7 = tu->as_bytes[7];
 }
 
-static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr,
-				yaffs_Tags *tagsPtr)
+static void yaffs_get_tags_from_spare(yaffs_dev_t *dev, yaffs_spare *sparePtr,
+				yaffs_tags_t *tagsPtr)
 {
-	yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
+	yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr;
 	int result;
 
-	tu->asBytes[0] = sparePtr->tagByte0;
-	tu->asBytes[1] = sparePtr->tagByte1;
-	tu->asBytes[2] = sparePtr->tagByte2;
-	tu->asBytes[3] = sparePtr->tagByte3;
-	tu->asBytes[4] = sparePtr->tagByte4;
-	tu->asBytes[5] = sparePtr->tagByte5;
-	tu->asBytes[6] = sparePtr->tagByte6;
-	tu->asBytes[7] = sparePtr->tagByte7;
+	tu->as_bytes[0] = sparePtr->tb0;
+	tu->as_bytes[1] = sparePtr->tb1;
+	tu->as_bytes[2] = sparePtr->tb2;
+	tu->as_bytes[3] = sparePtr->tb3;
+	tu->as_bytes[4] = sparePtr->tb4;
+	tu->as_bytes[5] = sparePtr->tb5;
+	tu->as_bytes[6] = sparePtr->tb6;
+	tu->as_bytes[7] = sparePtr->tb7;
 
-	result = yaffs_CheckECCOnTags(tagsPtr);
+	result = yaffs_check_tags_ecc(tagsPtr);
 	if (result > 0)
-		dev->tagsEccFixed++;
+		dev->n_tags_ecc_fixed++;
 	else if (result < 0)
-		dev->tagsEccUnfixed++;
+		dev->n_tags_ecc_unfixed++;
 }
 
-static void yaffs_SpareInitialise(yaffs_Spare *spare)
+static void yaffs_spare_init(yaffs_spare *spare)
 {
-	memset(spare, 0xFF, sizeof(yaffs_Spare));
+	memset(spare, 0xFF, sizeof(yaffs_spare));
 }
 
-static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev,
-				int chunkInNAND, const __u8 *data,
-				yaffs_Spare *spare)
+static int yaffs_wr_nand(struct yaffs_dev_s *dev,
+				int nand_chunk, const __u8 *data,
+				yaffs_spare *spare)
 {
-	if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) {
+	if (nand_chunk < dev->param.start_block * dev->param.chunks_per_block) {
 		T(YAFFS_TRACE_ERROR,
 		  (TSTR("**>> yaffs chunk %d is not valid" TENDSTR),
-		   chunkInNAND));
+		   nand_chunk));
 		return YAFFS_FAIL;
 	}
 
-	dev->nPageWrites++;
-	return dev->writeChunkToNAND(dev, chunkInNAND, data, spare);
+	return dev->param.write_chunk_fn(dev, nand_chunk, data, spare);
 }
 
-static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev,
-				   int chunkInNAND,
+static int yaffs_rd_chunk_nand(struct yaffs_dev_s *dev,
+				   int nand_chunk,
 				   __u8 *data,
-				   yaffs_Spare *spare,
-				   yaffs_ECCResult *eccResult,
+				   yaffs_spare *spare,
+				   yaffs_ecc_result *ecc_result,
 				   int doErrorCorrection)
 {
 	int retVal;
-	yaffs_Spare localSpare;
-
-	dev->nPageReads++;
+	yaffs_spare localSpare;
 
 	if (!spare && data) {
 		/* If we don't have a real spare, then we use a local one. */
@@ -192,107 +190,107 @@ static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev,
 		spare = &localSpare;
 	}
 
-	if (!dev->useNANDECC) {
-		retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, spare);
+	if (!dev->param.use_nand_ecc) {
+		retVal = dev->param.read_chunk_fn(dev, nand_chunk, data, spare);
 		if (data && doErrorCorrection) {
 			/* Do ECC correction */
 			/* Todo handle any errors */
-			int eccResult1, eccResult2;
+			int ecc_result1, ecc_result2;
 			__u8 calcEcc[3];
 
-			yaffs_ECCCalculate(data, calcEcc);
-			eccResult1 =
-			    yaffs_ECCCorrect(data, spare->ecc1, calcEcc);
-			yaffs_ECCCalculate(&data[256], calcEcc);
-			eccResult2 =
-			    yaffs_ECCCorrect(&data[256], spare->ecc2, calcEcc);
+			yaffs_ecc_cacl(data, calcEcc);
+			ecc_result1 =
+			    yaffs_ecc_correct(data, spare->ecc1, calcEcc);
+			yaffs_ecc_cacl(&data[256], calcEcc);
+			ecc_result2 =
+			    yaffs_ecc_correct(&data[256], spare->ecc2, calcEcc);
 
-			if (eccResult1 > 0) {
+			if (ecc_result1 > 0) {
 				T(YAFFS_TRACE_ERROR,
 				  (TSTR
 				   ("**>>yaffs ecc error fix performed on chunk %d:0"
-				    TENDSTR), chunkInNAND));
-				dev->eccFixed++;
-			} else if (eccResult1 < 0) {
+				    TENDSTR), nand_chunk));
+				dev->n_ecc_fixed++;
+			} else if (ecc_result1 < 0) {
 				T(YAFFS_TRACE_ERROR,
 				  (TSTR
 				   ("**>>yaffs ecc error unfixed on chunk %d:0"
-				    TENDSTR), chunkInNAND));
-				dev->eccUnfixed++;
+				    TENDSTR), nand_chunk));
+				dev->n_ecc_unfixed++;
 			}
 
-			if (eccResult2 > 0) {
+			if (ecc_result2 > 0) {
 				T(YAFFS_TRACE_ERROR,
 				  (TSTR
 				   ("**>>yaffs ecc error fix performed on chunk %d:1"
-				    TENDSTR), chunkInNAND));
-				dev->eccFixed++;
-			} else if (eccResult2 < 0) {
+				    TENDSTR), nand_chunk));
+				dev->n_ecc_fixed++;
+			} else if (ecc_result2 < 0) {
 				T(YAFFS_TRACE_ERROR,
 				  (TSTR
 				   ("**>>yaffs ecc error unfixed on chunk %d:1"
-				    TENDSTR), chunkInNAND));
-				dev->eccUnfixed++;
+				    TENDSTR), nand_chunk));
+				dev->n_ecc_unfixed++;
 			}
 
-			if (eccResult1 || eccResult2) {
+			if (ecc_result1 || ecc_result2) {
 				/* We had a data problem on this page */
-				yaffs_HandleReadDataError(dev, chunkInNAND);
+				yaffs_handle_rd_data_error(dev, nand_chunk);
 			}
 
-			if (eccResult1 < 0 || eccResult2 < 0)
-				*eccResult = YAFFS_ECC_RESULT_UNFIXED;
-			else if (eccResult1 > 0 || eccResult2 > 0)
-				*eccResult = YAFFS_ECC_RESULT_FIXED;
+			if (ecc_result1 < 0 || ecc_result2 < 0)
+				*ecc_result = YAFFS_ECC_RESULT_UNFIXED;
+			else if (ecc_result1 > 0 || ecc_result2 > 0)
+				*ecc_result = YAFFS_ECC_RESULT_FIXED;
 			else
-				*eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+				*ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
 		}
 	} else {
 		/* Must allocate enough memory for spare+2*sizeof(int) */
 		/* for ecc results from device. */
-		struct yaffs_NANDSpare nspare;
+		struct yaffs_nand_spare nspare;
 
 		memset(&nspare, 0, sizeof(nspare));
 
-		retVal = dev->readChunkFromNAND(dev, chunkInNAND, data,
-					(yaffs_Spare *) &nspare);
-		memcpy(spare, &nspare, sizeof(yaffs_Spare));
+		retVal = dev->param.read_chunk_fn(dev, nand_chunk, data,
+					(yaffs_spare *) &nspare);
+		memcpy(spare, &nspare, sizeof(yaffs_spare));
 		if (data && doErrorCorrection) {
 			if (nspare.eccres1 > 0) {
 				T(YAFFS_TRACE_ERROR,
 				  (TSTR
 				   ("**>>mtd ecc error fix performed on chunk %d:0"
-				    TENDSTR), chunkInNAND));
+				    TENDSTR), nand_chunk));
 			} else if (nspare.eccres1 < 0) {
 				T(YAFFS_TRACE_ERROR,
 				  (TSTR
 				   ("**>>mtd ecc error unfixed on chunk %d:0"
-				    TENDSTR), chunkInNAND));
+				    TENDSTR), nand_chunk));
 			}
 
 			if (nspare.eccres2 > 0) {
 				T(YAFFS_TRACE_ERROR,
 				  (TSTR
 				   ("**>>mtd ecc error fix performed on chunk %d:1"
-				    TENDSTR), chunkInNAND));
+				    TENDSTR), nand_chunk));
 			} else if (nspare.eccres2 < 0) {
 				T(YAFFS_TRACE_ERROR,
 				  (TSTR
 				   ("**>>mtd ecc error unfixed on chunk %d:1"
-				    TENDSTR), chunkInNAND));
+				    TENDSTR), nand_chunk));
 			}
 
 			if (nspare.eccres1 || nspare.eccres2) {
 				/* We had a data problem on this page */
-				yaffs_HandleReadDataError(dev, chunkInNAND);
+				yaffs_handle_rd_data_error(dev, nand_chunk);
 			}
 
 			if (nspare.eccres1 < 0 || nspare.eccres2 < 0)
-				*eccResult = YAFFS_ECC_RESULT_UNFIXED;
+				*ecc_result = YAFFS_ECC_RESULT_UNFIXED;
 			else if (nspare.eccres1 > 0 || nspare.eccres2 > 0)
-				*eccResult = YAFFS_ECC_RESULT_FIXED;
+				*ecc_result = YAFFS_ECC_RESULT_FIXED;
 			else
-				*eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+				*ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
 
 		}
 	}
@@ -300,17 +298,17 @@ static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev,
 }
 
 #ifdef NOTYET
-static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
-				  int chunkInNAND)
+static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
+				  int nand_chunk)
 {
 	static int init;
 	static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK];
 	static __u8 data[YAFFS_BYTES_PER_CHUNK];
 	/* Might as well always allocate the larger size for */
-	/* dev->useNANDECC == true; */
-	static __u8 spare[sizeof(struct yaffs_NANDSpare)];
+	/* dev->param.use_nand_ecc == true; */
+	static __u8 spare[sizeof(struct yaffs_nand_spare)];
 
-	dev->readChunkFromNAND(dev, chunkInNAND, data, (yaffs_Spare *) spare);
+	dev->param.read_chunk_fn(dev, nand_chunk, data, (yaffs_spare *) spare);
 
 	if (!init) {
 		memset(cmpbuf, 0xff, YAFFS_BYTES_PER_CHUNK);
@@ -331,14 +329,14 @@ static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
  * Functions for robustisizing
  */
 
-static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND)
+static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk)
 {
-	int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
+	int flash_block = nand_chunk / dev->param.chunks_per_block;
 
 	/* Mark the block for retirement */
-	yaffs_GetBlockInfo(dev, blockInNAND + dev->blockOffset)->needsRetiring = 1;
+	yaffs_get_block_info(dev, flash_block + dev->block_offset)->needs_retiring = 1;
 	T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
-	  (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND));
+	  (TSTR("**>>Block %d marked for retirement" TENDSTR), flash_block));
 
 	/* TODO:
 	 * Just do a garbage collection on the affected block
@@ -348,44 +346,44 @@ static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND)
 }
 
 #ifdef NOTYET
-static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND)
+static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk)
 {
 }
 
-static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
 				     const __u8 *data,
-				     const yaffs_Spare *spare)
+				     const yaffs_spare *spare)
 {
 }
 
-static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
-				    const yaffs_Spare *spare)
+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
+				    const yaffs_spare *spare)
 {
 }
 
-static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND)
+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk)
 {
-	int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
+	int flash_block = nand_chunk / dev->param.chunks_per_block;
 
 	/* Mark the block for retirement */
-	yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1;
+	yaffs_get_block_info(dev, flash_block)->needs_retiring = 1;
 	/* Delete the chunk */
-	yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
+	yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
 }
 
-static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1,
-			       const yaffs_Spare *s0, const yaffs_Spare *s1)
+static int yaffs_verify_cmp(const __u8 *d0, const __u8 *d1,
+			       const yaffs_spare *s0, const yaffs_spare *s1)
 {
 
 	if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 ||
-	    s0->tagByte0 != s1->tagByte0 ||
-	    s0->tagByte1 != s1->tagByte1 ||
-	    s0->tagByte2 != s1->tagByte2 ||
-	    s0->tagByte3 != s1->tagByte3 ||
-	    s0->tagByte4 != s1->tagByte4 ||
-	    s0->tagByte5 != s1->tagByte5 ||
-	    s0->tagByte6 != s1->tagByte6 ||
-	    s0->tagByte7 != s1->tagByte7 ||
+	    s0->tb0 != s1->tb0 ||
+	    s0->tb1 != s1->tb1 ||
+	    s0->tb2 != s1->tb2 ||
+	    s0->tb3 != s1->tb3 ||
+	    s0->tb4 != s1->tb4 ||
+	    s0->tb5 != s1->tb5 ||
+	    s0->tb6 != s1->tb6 ||
+	    s0->tb7 != s1->tb7 ||
 	    s0->ecc1[0] != s1->ecc1[0] ||
 	    s0->ecc1[1] != s1->ecc1[1] ||
 	    s0->ecc1[2] != s1->ecc1[2] ||
@@ -398,53 +396,53 @@ static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1,
 }
 #endif				/* NOTYET */
 
-int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev,
-						int chunkInNAND,
+int yaffs_tags_compat_wr(yaffs_dev_t *dev,
+						int nand_chunk,
 						const __u8 *data,
-						const yaffs_ExtendedTags *eTags)
+						const yaffs_ext_tags *eTags)
 {
-	yaffs_Spare spare;
-	yaffs_Tags tags;
+	yaffs_spare spare;
+	yaffs_tags_t tags;
 
-	yaffs_SpareInitialise(&spare);
+	yaffs_spare_init(&spare);
 
-	if (eTags->chunkDeleted)
-		spare.pageStatus = 0;
+	if (eTags->is_deleted)
+		spare.page_status = 0;
 	else {
-		tags.objectId = eTags->objectId;
-		tags.chunkId = eTags->chunkId;
+		tags.obj_id = eTags->obj_id;
+		tags.chunk_id = eTags->chunk_id;
 
-		tags.byteCountLSB = eTags->byteCount & 0x3ff;
+		tags.n_bytes_lsb = eTags->n_bytes & 0x3ff;
 
-		if (dev->nDataBytesPerChunk >= 1024)
-			tags.byteCountMSB = (eTags->byteCount >> 10) & 3;
+		if (dev->data_bytes_per_chunk >= 1024)
+			tags.n_bytes_msb = (eTags->n_bytes >> 10) & 3;
 		else
-			tags.byteCountMSB = 3;
+			tags.n_bytes_msb = 3;
 
 
-		tags.serialNumber = eTags->serialNumber;
+		tags.serial_number = eTags->serial_number;
 
-		if (!dev->useNANDECC && data)
-			yaffs_CalcECC(data, &spare);
+		if (!dev->param.use_nand_ecc && data)
+			yaffs_calc_ecc(data, &spare);
 
-		yaffs_LoadTagsIntoSpare(&spare, &tags);
+		yaffs_load_tags_to_spare(&spare, &tags);
 
 	}
 
-	return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare);
+	return yaffs_wr_nand(dev, nand_chunk, data, &spare);
 }
 
-int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
-						     int chunkInNAND,
+int yaffs_tags_compat_rd(yaffs_dev_t *dev,
+						     int nand_chunk,
 						     __u8 *data,
-						     yaffs_ExtendedTags *eTags)
+						     yaffs_ext_tags *eTags)
 {
 
-	yaffs_Spare spare;
-	yaffs_Tags tags;
-	yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_UNKNOWN;
+	yaffs_spare spare;
+	yaffs_tags_t tags;
+	yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN;
 
-	static yaffs_Spare spareFF;
+	static yaffs_spare spareFF;
 	static int init;
 
 	if (!init) {
@@ -452,33 +450,33 @@ int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
 		init = 1;
 	}
 
-	if (yaffs_ReadChunkFromNAND
-	    (dev, chunkInNAND, data, &spare, &eccResult, 1)) {
+	if (yaffs_rd_chunk_nand
+	    (dev, nand_chunk, data, &spare, &ecc_result, 1)) {
 		/* eTags may be NULL */
 		if (eTags) {
 
 			int deleted =
-			    (yaffs_CountBits(spare.pageStatus) < 7) ? 1 : 0;
+			    (yaffs_count_bits(spare.page_status) < 7) ? 1 : 0;
 
-			eTags->chunkDeleted = deleted;
-			eTags->eccResult = eccResult;
-			eTags->blockBad = 0;	/* We're reading it */
+			eTags->is_deleted = deleted;
+			eTags->ecc_result = ecc_result;
+			eTags->block_bad = 0;	/* We're reading it */
 			/* therefore it is not a bad block */
-			eTags->chunkUsed =
+			eTags->chunk_used =
 			    (memcmp(&spareFF, &spare, sizeof(spareFF)) !=
 			     0) ? 1 : 0;
 
-			if (eTags->chunkUsed) {
-				yaffs_GetTagsFromSpare(dev, &spare, &tags);
+			if (eTags->chunk_used) {
+				yaffs_get_tags_from_spare(dev, &spare, &tags);
 
-				eTags->objectId = tags.objectId;
-				eTags->chunkId = tags.chunkId;
-				eTags->byteCount = tags.byteCountLSB;
+				eTags->obj_id = tags.obj_id;
+				eTags->chunk_id = tags.chunk_id;
+				eTags->n_bytes = tags.n_bytes_lsb;
 
-				if (dev->nDataBytesPerChunk >= 1024)
-					eTags->byteCount |= (((unsigned) tags.byteCountMSB) << 10);
+				if (dev->data_bytes_per_chunk >= 1024)
+					eTags->n_bytes |= (((unsigned) tags.n_bytes_msb) << 10);
 
-				eTags->serialNumber = tags.serialNumber;
+				eTags->serial_number = tags.serial_number;
 			}
 		}
 
@@ -488,49 +486,49 @@ int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
 	}
 }
 
-int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
-					    int blockInNAND)
+int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev,
+					    int flash_block)
 {
 
-	yaffs_Spare spare;
+	yaffs_spare spare;
 
-	memset(&spare, 0xff, sizeof(yaffs_Spare));
+	memset(&spare, 0xff, sizeof(yaffs_spare));
 
-	spare.blockStatus = 'Y';
+	spare.block_status = 'Y';
 
-	yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock, NULL,
+	yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block, NULL,
 			       &spare);
-	yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock + 1,
+	yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block + 1,
 			       NULL, &spare);
 
 	return YAFFS_OK;
 
 }
 
-int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
-					  int blockNo,
-					  yaffs_BlockState *state,
-					  __u32 *sequenceNumber)
+int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev,
+					  int block_no,
+					  yaffs_block_state_t *state,
+					  __u32 *seq_number)
 {
 
-	yaffs_Spare spare0, spare1;
-	static yaffs_Spare spareFF;
+	yaffs_spare spare0, spare1;
+	static yaffs_spare spareFF;
 	static int init;
-	yaffs_ECCResult dummy;
+	yaffs_ecc_result dummy;
 
 	if (!init) {
 		memset(&spareFF, 0xFF, sizeof(spareFF));
 		init = 1;
 	}
 
-	*sequenceNumber = 0;
+	*seq_number = 0;
 
-	yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock, NULL,
+	yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block, NULL,
 				&spare0, &dummy, 1);
-	yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock + 1, NULL,
+	yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block + 1, NULL,
 				&spare1, &dummy, 1);
 
-	if (yaffs_CountBits(spare0.blockStatus & spare1.blockStatus) < 7)
+	if (yaffs_count_bits(spare0.block_status & spare1.block_status) < 7)
 		*state = YAFFS_BLOCK_STATE_DEAD;
 	else if (memcmp(&spareFF, &spare0, sizeof(spareFF)) == 0)
 		*state = YAFFS_BLOCK_STATE_EMPTY;

target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -17,23 +17,23 @@
 #define __YAFFS_TAGSCOMPAT_H__
 
 #include "yaffs_guts.h"
-int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev,
-						int chunkInNAND,
+int yaffs_tags_compat_wr(yaffs_dev_t *dev,
+						int nand_chunk,
 						const __u8 *data,
-						const yaffs_ExtendedTags *tags);
-int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
-						int chunkInNAND,
+						const yaffs_ext_tags *tags);
+int yaffs_tags_compat_rd(yaffs_dev_t *dev,
+						int nand_chunk,
 						__u8 *data,
-						yaffs_ExtendedTags *tags);
-int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
-					    int blockNo);
-int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
-					  int blockNo,
-					  yaffs_BlockState *state,
-					  __u32 *sequenceNumber);
+						yaffs_ext_tags *tags);
+int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev,
+					    int block_no);
+int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev,
+					  int block_no,
+					  yaffs_block_state_t *state,
+					  __u32 *seq_number);
 
-void yaffs_CalcTagsECC(yaffs_Tags *tags);
-int yaffs_CheckECCOnTags(yaffs_Tags *tags);
-int yaffs_CountBits(__u8 byte);
+void yaffs_calc_tags_ecc(yaffs_tags_t *tags);
+int yaffs_check_tags_ecc(yaffs_tags_t *tags);
+int yaffs_count_bits(__u8 byte);
 
 #endif

target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -13,16 +13,16 @@
 
 #include "yaffs_tagsvalidity.h"
 
-void yaffs_InitialiseTags(yaffs_ExtendedTags *tags)
+void yaffs_init_tags(yaffs_ext_tags *tags)
 {
-	memset(tags, 0, sizeof(yaffs_ExtendedTags));
-	tags->validMarker0 = 0xAAAAAAAA;
-	tags->validMarker1 = 0x55555555;
+	memset(tags, 0, sizeof(yaffs_ext_tags));
+	tags->validity1 = 0xAAAAAAAA;
+	tags->validty1 = 0x55555555;
 }
 
-int yaffs_ValidateTags(yaffs_ExtendedTags *tags)
+int yaffs_validate_tags(yaffs_ext_tags *tags)
 {
-	return (tags->validMarker0 == 0xAAAAAAAA &&
-		tags->validMarker1 == 0x55555555);
+	return (tags->validity1 == 0xAAAAAAAA &&
+		tags->validty1 == 0x55555555);
 
 }

target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -19,6 +19,6 @@
 
 #include "yaffs_guts.h"
 
-void yaffs_InitialiseTags(yaffs_ExtendedTags *tags);
-int yaffs_ValidateTags(yaffs_ExtendedTags *tags);
+void yaffs_init_tags(yaffs_ext_tags *tags);
+int yaffs_validate_tags(yaffs_ext_tags *tags);
 #endif

target/linux/generic/files/fs/yaffs2/yaffs_trace.h

@@ -0,0 +1,60 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+
+#ifndef __YTRACE_H__
+#define __YTRACE_H__
+
+extern unsigned int yaffs_trace_mask;
+extern unsigned int yaffs_wr_attempts;
+
+/*
+ * Tracing flags.
+ * The flags masked in YAFFS_TRACE_ALWAYS are always traced.
+ */
+
+#define YAFFS_TRACE_OS			0x00000002
+#define YAFFS_TRACE_ALLOCATE		0x00000004
+#define YAFFS_TRACE_SCAN		0x00000008
+#define YAFFS_TRACE_BAD_BLOCKS		0x00000010
+#define YAFFS_TRACE_ERASE		0x00000020
+#define YAFFS_TRACE_GC			0x00000040
+#define YAFFS_TRACE_WRITE		0x00000080
+#define YAFFS_TRACE_TRACING		0x00000100
+#define YAFFS_TRACE_DELETION		0x00000200
+#define YAFFS_TRACE_BUFFERS		0x00000400
+#define YAFFS_TRACE_NANDACCESS		0x00000800
+#define YAFFS_TRACE_GC_DETAIL		0x00001000
+#define YAFFS_TRACE_SCAN_DEBUG		0x00002000
+#define YAFFS_TRACE_MTD			0x00004000
+#define YAFFS_TRACE_CHECKPOINT		0x00008000
+
+#define YAFFS_TRACE_VERIFY		0x00010000
+#define YAFFS_TRACE_VERIFY_NAND		0x00020000
+#define YAFFS_TRACE_VERIFY_FULL		0x00040000
+#define YAFFS_TRACE_VERIFY_ALL		0x000F0000
+
+#define YAFFS_TRACE_SYNC		0x00100000
+#define YAFFS_TRACE_BACKGROUND		0x00200000
+#define YAFFS_TRACE_LOCK		0x00400000
+
+#define YAFFS_TRACE_ERROR		0x40000000
+#define YAFFS_TRACE_BUG			0x80000000
+#define YAFFS_TRACE_ALWAYS		0xF0000000
+
+
+#define T(mask, p) do { if ((mask) & (yaffs_trace_mask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0)
+
+#endif

target/linux/generic/files/fs/yaffs2/yaffs_verify.c

@@ -0,0 +1,626 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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.
+ */
+
+
+#include "yaffs_verify.h"
+#include "yaffs_trace.h"
+#include "yaffs_bitmap.h"
+#include "yaffs_getblockinfo.h"
+#include "yaffs_nand.h"
+
+int yaffs_skip_verification(yaffs_dev_t *dev)
+{
+	dev=dev;
+	return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
+}
+
+static int yaffs_skip_full_verification(yaffs_dev_t *dev)
+{
+	dev=dev;
+	return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_FULL));
+}
+
+static int yaffs_skip_nand_verification(yaffs_dev_t *dev)
+{
+	dev=dev;
+	return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_NAND));
+}
+
+
+static const char *block_stateName[] = {
+"Unknown",
+"Needs scanning",
+"Scanning",
+"Empty",
+"Allocating",
+"Full",
+"Dirty",
+"Checkpoint",
+"Collecting",
+"Dead"
+};
+
+
+void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n)
+{
+	int actuallyUsed;
+	int inUse;
+
+	if (yaffs_skip_verification(dev))
+		return;
+
+	/* Report illegal runtime states */
+	if (bi->block_state >= YAFFS_NUMBER_OF_BLOCK_STATES)
+		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->block_state));
+
+	switch (bi->block_state) {
+	case YAFFS_BLOCK_STATE_UNKNOWN:
+	case YAFFS_BLOCK_STATE_SCANNING:
+	case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
+		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR),
+		n, block_stateName[bi->block_state]));
+	}
+
+	/* Check pages in use and soft deletions are legal */
+
+	actuallyUsed = bi->pages_in_use - bi->soft_del_pages;
+
+	if (bi->pages_in_use < 0 || bi->pages_in_use > dev->param.chunks_per_block ||
+	   bi->soft_del_pages < 0 || bi->soft_del_pages > dev->param.chunks_per_block ||
+	   actuallyUsed < 0 || actuallyUsed > dev->param.chunks_per_block)
+		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pages_in_used %d soft_del_pages %d"TENDSTR),
+		n, bi->pages_in_use, bi->soft_del_pages));
+
+
+	/* Check chunk bitmap legal */
+	inUse = yaffs_count_chunk_bits(dev, n);
+	if (inUse != bi->pages_in_use)
+		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pages_in_use %d counted chunk bits %d"TENDSTR),
+			n, bi->pages_in_use, inUse));
+
+}
+
+
+
+void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n)
+{
+	yaffs_verify_blk(dev, bi, n);
+
+	/* After collection the block should be in the erased state */
+
+	if (bi->block_state != YAFFS_BLOCK_STATE_COLLECTING &&
+			bi->block_state != YAFFS_BLOCK_STATE_EMPTY) {
+		T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
+			n, bi->block_state));
+	}
+}
+
+void yaffs_verify_blocks(yaffs_dev_t *dev)
+{
+	int i;
+	int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
+	int nIllegalBlockStates = 0;
+
+	if (yaffs_skip_verification(dev))
+		return;
+
+	memset(nBlocksPerState, 0, sizeof(nBlocksPerState));
+
+	for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
+		yaffs_block_info_t *bi = yaffs_get_block_info(dev, i);
+		yaffs_verify_blk(dev, bi, i);
+
+		if (bi->block_state < YAFFS_NUMBER_OF_BLOCK_STATES)
+			nBlocksPerState[bi->block_state]++;
+		else
+			nIllegalBlockStates++;
+	}
+
+	T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
+	T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR)));
+
+	T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates));
+	if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
+		T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR)));
+
+	for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
+		T(YAFFS_TRACE_VERIFY,
+		  (TSTR("%s %d blocks"TENDSTR),
+		  block_stateName[i], nBlocksPerState[i]));
+
+	if (dev->blocks_in_checkpt != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
+		T(YAFFS_TRACE_VERIFY,
+		 (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
+		 dev->blocks_in_checkpt, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
+
+	if (dev->n_erased_blocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
+		T(YAFFS_TRACE_VERIFY,
+		 (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
+		 dev->n_erased_blocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
+
+	if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
+		T(YAFFS_TRACE_VERIFY,
+		 (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
+		 nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING]));
+
+	T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
+
+}
+
+/*
+ * Verify the object header. oh must be valid, but obj and tags may be NULL in which
+ * case those tests will not be performed.
+ */
+void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck)
+{
+	if (obj && yaffs_skip_verification(obj->my_dev))
+		return;
+
+	if (!(tags && obj && oh)) {
+		T(YAFFS_TRACE_VERIFY,
+				(TSTR("Verifying object header tags %p obj %p oh %p"TENDSTR),
+				tags, obj, oh));
+		return;
+	}
+
+	if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
+			oh->type > YAFFS_OBJECT_TYPE_MAX)
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
+			tags->obj_id, oh->type));
+
+	if (tags->obj_id != obj->obj_id)
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header mismatch obj_id %d"TENDSTR),
+			tags->obj_id, obj->obj_id));
+
+
+	/*
+	 * Check that the object's parent ids match if parentCheck requested.
+	 *
+	 * Tests do not apply to the root object.
+	 */
+
+	if (parentCheck && tags->obj_id > 1 && !obj->parent)
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header mismatch parent_id %d obj->parent is NULL"TENDSTR),
+			tags->obj_id, oh->parent_obj_id));
+
+	if (parentCheck && obj->parent &&
+			oh->parent_obj_id != obj->parent->obj_id &&
+			(oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED ||
+			obj->parent->obj_id != YAFFS_OBJECTID_DELETED))
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header mismatch parent_id %d parent_obj_id %d"TENDSTR),
+			tags->obj_id, oh->parent_obj_id, obj->parent->obj_id));
+
+	if (tags->obj_id > 1 && oh->name[0] == 0) /* Null name */
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header name is NULL"TENDSTR),
+			obj->obj_id));
+
+	if (tags->obj_id > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header name is 0xFF"TENDSTR),
+			obj->obj_id));
+}
+
+
+#if 0
+/* Not being used, but don't want to throw away yet */
+int yaffs_verify_tnode_worker(yaffs_obj_t *obj, yaffs_tnode_t *tn,
+					__u32 level, int chunk_offset)
+{
+	int i;
+	yaffs_dev_t *dev = obj->my_dev;
+	int ok = 1;
+
+	if (tn) {
+		if (level > 0) {
+
+			for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
+				if (tn->internal[i]) {
+					ok = yaffs_verify_tnode_worker(obj,
+							tn->internal[i],
+							level - 1,
+							(chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i);
+				}
+			}
+		} else if (level == 0) {
+			yaffs_ext_tags tags;
+			__u32 obj_id = obj->obj_id;
+
+			chunk_offset <<=  YAFFS_TNODES_LEVEL0_BITS;
+
+			for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) {
+				__u32 theChunk = yaffs_get_group_base(dev, tn, i);
+
+				if (theChunk > 0) {
+					/* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.obj_id,tags.chunk_id,theChunk)); */
+					yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags);
+					if (tags.obj_id != obj_id || tags.chunk_id != chunk_offset) {
+						T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+							obj_id, chunk_offset, theChunk,
+							tags.obj_id, tags.chunk_id));
+					}
+				}
+				chunk_offset++;
+			}
+		}
+	}
+
+	return ok;
+
+}
+
+#endif
+
+void yaffs_verify_file(yaffs_obj_t *obj)
+{
+	int requiredTallness;
+	int actualTallness;
+	__u32 lastChunk;
+	__u32 x;
+	__u32 i;
+	yaffs_dev_t *dev;
+	yaffs_ext_tags tags;
+	yaffs_tnode_t *tn;
+	__u32 obj_id;
+
+	if (!obj)
+		return;
+
+	if (yaffs_skip_verification(obj->my_dev))
+		return;
+
+	dev = obj->my_dev;
+	obj_id = obj->obj_id;
+
+	/* Check file size is consistent with tnode depth */
+	lastChunk =  obj->variant.file_variant.file_size / dev->data_bytes_per_chunk + 1;
+	x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
+	requiredTallness = 0;
+	while (x > 0) {
+		x >>= YAFFS_TNODES_INTERNAL_BITS;
+		requiredTallness++;
+	}
+
+	actualTallness = obj->variant.file_variant.top_level;
+
+	/* Check that the chunks in the tnode tree are all correct.
+	 * We do this by scanning through the tnode tree and
+	 * checking the tags for every chunk match.
+	 */
+
+	if (yaffs_skip_nand_verification(dev))
+		return;
+
+	for (i = 1; i <= lastChunk; i++) {
+		tn = yaffs_find_tnode_0(dev, &obj->variant.file_variant, i);
+
+		if (tn) {
+			__u32 theChunk = yaffs_get_group_base(dev, tn, i);
+			if (theChunk > 0) {
+				/* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),obj_id,i,theChunk)); */
+				yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags);
+				if (tags.obj_id != obj_id || tags.chunk_id != i) {
+					T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+						obj_id, i, theChunk,
+						tags.obj_id, tags.chunk_id));
+				}
+			}
+		}
+	}
+}
+
+
+void yaffs_verify_link(yaffs_obj_t *obj)
+{
+	if (obj && yaffs_skip_verification(obj->my_dev))
+		return;
+
+	/* Verify sane equivalent object */
+}
+
+void yaffs_verify_symlink(yaffs_obj_t *obj)
+{
+	if (obj && yaffs_skip_verification(obj->my_dev))
+		return;
+
+	/* Verify symlink string */
+}
+
+void yaffs_verify_special(yaffs_obj_t *obj)
+{
+	if (obj && yaffs_skip_verification(obj->my_dev))
+		return;
+}
+
+void yaffs_verify_obj(yaffs_obj_t *obj)
+{
+	yaffs_dev_t *dev;
+
+	__u32 chunkMin;
+	__u32 chunkMax;
+
+	__u32 chunk_idOk;
+	__u32 chunkInRange;
+	__u32 chunkShouldNotBeDeleted;
+	__u32 chunkValid;
+
+	if (!obj)
+		return;
+
+	if (obj->being_created)
+		return;
+
+	dev = obj->my_dev;
+
+	if (yaffs_skip_verification(dev))
+		return;
+
+	/* Check sane object header chunk */
+
+	chunkMin = dev->internal_start_block * dev->param.chunks_per_block;
+	chunkMax = (dev->internal_end_block+1) * dev->param.chunks_per_block - 1;
+
+	chunkInRange = (((unsigned)(obj->hdr_chunk)) >= chunkMin && ((unsigned)(obj->hdr_chunk)) <= chunkMax);
+	chunk_idOk = chunkInRange || (obj->hdr_chunk == 0);
+	chunkValid = chunkInRange &&
+			yaffs_check_chunk_bit(dev,
+					obj->hdr_chunk / dev->param.chunks_per_block,
+					obj->hdr_chunk % dev->param.chunks_per_block);
+	chunkShouldNotBeDeleted = chunkInRange && !chunkValid;
+
+	if (!obj->fake &&
+			(!chunk_idOk || chunkShouldNotBeDeleted)) {
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d has chunk_id %d %s %s"TENDSTR),
+			obj->obj_id, obj->hdr_chunk,
+			chunk_idOk ? "" : ",out of range",
+			chunkShouldNotBeDeleted ? ",marked as deleted" : ""));
+	}
+
+	if (chunkValid && !yaffs_skip_nand_verification(dev)) {
+		yaffs_ext_tags tags;
+		yaffs_obj_header *oh;
+		__u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__);
+
+		oh = (yaffs_obj_header *)buffer;
+
+		yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, buffer,
+				&tags);
+
+		yaffs_verify_oh(obj, oh, &tags, 1);
+
+		yaffs_release_temp_buffer(dev, buffer, __LINE__);
+	}
+
+	/* Verify it has a parent */
+	if (obj && !obj->fake &&
+			(!obj->parent || obj->parent->my_dev != dev)) {
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
+			obj->obj_id, obj->parent));
+	}
+
+	/* Verify parent is a directory */
+	if (obj->parent && obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
+			obj->obj_id, obj->parent->variant_type));
+	}
+
+	switch (obj->variant_type) {
+	case YAFFS_OBJECT_TYPE_FILE:
+		yaffs_verify_file(obj);
+		break;
+	case YAFFS_OBJECT_TYPE_SYMLINK:
+		yaffs_verify_symlink(obj);
+		break;
+	case YAFFS_OBJECT_TYPE_DIRECTORY:
+		yaffs_verify_dir(obj);
+		break;
+	case YAFFS_OBJECT_TYPE_HARDLINK:
+		yaffs_verify_link(obj);
+		break;
+	case YAFFS_OBJECT_TYPE_SPECIAL:
+		yaffs_verify_special(obj);
+		break;
+	case YAFFS_OBJECT_TYPE_UNKNOWN:
+	default:
+		T(YAFFS_TRACE_VERIFY,
+		(TSTR("Obj %d has illegaltype %d"TENDSTR),
+		obj->obj_id, obj->variant_type));
+		break;
+	}
+}
+
+void yaffs_verify_objects(yaffs_dev_t *dev)
+{
+	yaffs_obj_t *obj;
+	int i;
+	struct ylist_head *lh;
+
+	if (yaffs_skip_verification(dev))
+		return;
+
+	/* Iterate through the objects in each hash entry */
+
+	for (i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++) {
+		ylist_for_each(lh, &dev->obj_bucket[i].list) {
+			if (lh) {
+				obj = ylist_entry(lh, yaffs_obj_t, hash_link);
+				yaffs_verify_obj(obj);
+			}
+		}
+	}
+}
+
+
+void yaffs_verify_obj_in_dir(yaffs_obj_t *obj)
+{
+	struct ylist_head *lh;
+	yaffs_obj_t *listObj;
+
+	int count = 0;
+
+	if (!obj) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR)));
+		YBUG();
+		return;
+	}
+
+	if (yaffs_skip_verification(obj->my_dev))
+		return;
+
+	if (!obj->parent) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR)));
+		YBUG();
+		return;
+	}
+
+	if (obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR)));
+		YBUG();
+	}
+
+	/* Iterate through the objects in each hash entry */
+
+	ylist_for_each(lh, &obj->parent->variant.dir_variant.children) {
+		if (lh) {
+			listObj = ylist_entry(lh, yaffs_obj_t, siblings);
+			yaffs_verify_obj(listObj);
+			if (obj == listObj)
+				count++;
+		}
+	 }
+
+	if (count != 1) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count));
+		YBUG();
+	}
+}
+
+void yaffs_verify_dir(yaffs_obj_t *directory)
+{
+	struct ylist_head *lh;
+	yaffs_obj_t *listObj;
+
+	if (!directory) {
+		YBUG();
+		return;
+	}
+
+	if (yaffs_skip_full_verification(directory->my_dev))
+		return;
+
+	if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variant_type));
+		YBUG();
+	}
+
+	/* Iterate through the objects in each hash entry */
+
+	ylist_for_each(lh, &directory->variant.dir_variant.children) {
+		if (lh) {
+			listObj = ylist_entry(lh, yaffs_obj_t, siblings);
+			if (listObj->parent != directory) {
+				T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent));
+				YBUG();
+			}
+			yaffs_verify_obj_in_dir(listObj);
+		}
+	}
+}
+
+static int yaffs_free_verification_failures;
+
+void yaffs_verify_free_chunks(yaffs_dev_t *dev)
+{
+	int counted;
+	int difference;
+
+	if (yaffs_skip_verification(dev))
+		return;
+
+	counted = yaffs_count_free_chunks(dev);
+
+	difference = dev->n_free_chunks - counted;
+
+	if (difference) {
+		T(YAFFS_TRACE_ALWAYS,
+		  (TSTR("Freechunks verification failure %d %d %d" TENDSTR),
+		   dev->n_free_chunks, counted, difference));
+		yaffs_free_verification_failures++;
+	}
+}
+
+int yaffs_verify_file_sane(yaffs_obj_t *in)
+{
+#if 0
+	int chunk;
+	int n_chunks;
+	int fSize;
+	int failed = 0;
+	int obj_id;
+	yaffs_tnode_t *tn;
+	yaffs_tags_t localTags;
+	yaffs_tags_t *tags = &localTags;
+	int theChunk;
+	int is_deleted;
+
+	if (in->variant_type != YAFFS_OBJECT_TYPE_FILE)
+		return YAFFS_FAIL;
+
+	obj_id = in->obj_id;
+	fSize = in->variant.file_variant.file_size;
+	n_chunks =
+	    (fSize + in->my_dev->data_bytes_per_chunk - 1) / in->my_dev->data_bytes_per_chunk;
+
+	for (chunk = 1; chunk <= n_chunks; chunk++) {
+		tn = yaffs_find_tnode_0(in->my_dev, &in->variant.file_variant,
+					   chunk);
+
+		if (tn) {
+
+			theChunk = yaffs_get_group_base(dev, tn, chunk);
+
+			if (yaffs_check_chunk_bits
+			    (dev, theChunk / dev->param.chunks_per_block,
+			     theChunk % dev->param.chunks_per_block)) {
+
+				yaffs_rd_chunk_tags_nand(in->my_dev, theChunk,
+							    tags,
+							    &is_deleted);
+				if (yaffs_tags_match
+				    (tags, in->obj_id, chunk, is_deleted)) {
+					/* found it; */
+
+				}
+			} else {
+
+				failed = 1;
+			}
+
+		} else {
+			/* T(("No level 0 found for %d\n", chunk)); */
+		}
+	}
+
+	return failed ? YAFFS_FAIL : YAFFS_OK;
+#else
+	in=in;
+	return YAFFS_OK;
+#endif
+}

target/linux/generic/files/fs/yaffs2/yaffs_verify.h

@@ -0,0 +1,39 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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.
+ */
+
+#ifndef __YAFFS_VERIFY_H__
+#define __YAFFS_VERIFY_H__
+
+#include "yaffs_guts.h"
+
+void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n);
+void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n);
+void yaffs_verify_blocks(yaffs_dev_t *dev);
+
+void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck);
+void yaffs_verify_file(yaffs_obj_t *obj);
+void yaffs_verify_link(yaffs_obj_t *obj);
+void yaffs_verify_symlink(yaffs_obj_t *obj);
+void yaffs_verify_special(yaffs_obj_t *obj);
+void yaffs_verify_obj(yaffs_obj_t *obj);
+void yaffs_verify_objects(yaffs_dev_t *dev);
+void yaffs_verify_obj_in_dir(yaffs_obj_t *obj);
+void yaffs_verify_dir(yaffs_obj_t *directory);
+void yaffs_verify_free_chunks(yaffs_dev_t *dev);
+
+int yaffs_verify_file_sane(yaffs_obj_t *obj);
+
+int yaffs_skip_verification(yaffs_dev_t *dev);
+
+#endif
+

target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c

@@ -0,0 +1,465 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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.
+ */
+#include "yaffs_yaffs1.h"
+#include "yportenv.h"
+#include "yaffs_trace.h"
+#include "yaffs_bitmap.h"
+#include "yaffs_getblockinfo.h"
+#include "yaffs_nand.h"
+
+
+int yaffs1_scan(yaffs_dev_t *dev)
+{
+	yaffs_ext_tags tags;
+	int blk;
+	int blockIterator;
+	int startIterator;
+	int endIterator;
+	int result;
+
+	int chunk;
+	int c;
+	int deleted;
+	yaffs_block_state_t state;
+	yaffs_obj_t *hard_list = NULL;
+	yaffs_block_info_t *bi;
+	__u32 seq_number;
+	yaffs_obj_header *oh;
+	yaffs_obj_t *in;
+	yaffs_obj_t *parent;
+
+	int alloc_failed = 0;
+
+	struct yaffs_shadow_fixer_s *shadowFixerList = NULL;
+
+
+	__u8 *chunkData;
+
+
+
+	T(YAFFS_TRACE_SCAN,
+	  (TSTR("yaffs1_scan starts  intstartblk %d intendblk %d..." TENDSTR),
+	   dev->internal_start_block, dev->internal_end_block));
+
+	chunkData = yaffs_get_temp_buffer(dev, __LINE__);
+
+	dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER;
+
+	/* Scan all the blocks to determine their state */
+	bi = dev->block_info;
+	for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) {
+		yaffs_clear_chunk_bits(dev, blk);
+		bi->pages_in_use = 0;
+		bi->soft_del_pages = 0;
+
+		yaffs_query_init_block_state(dev, blk, &state, &seq_number);
+
+		bi->block_state = state;
+		bi->seq_number = seq_number;
+
+		if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK)
+			bi->block_state = state = YAFFS_BLOCK_STATE_DEAD;
+
+		T(YAFFS_TRACE_SCAN_DEBUG,
+		  (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
+		   state, seq_number));
+
+		if (state == YAFFS_BLOCK_STATE_DEAD) {
+			T(YAFFS_TRACE_BAD_BLOCKS,
+			  (TSTR("block %d is bad" TENDSTR), blk));
+		} else if (state == YAFFS_BLOCK_STATE_EMPTY) {
+			T(YAFFS_TRACE_SCAN_DEBUG,
+			  (TSTR("Block empty " TENDSTR)));
+			dev->n_erased_blocks++;
+			dev->n_free_chunks += dev->param.chunks_per_block;
+		}
+		bi++;
+	}
+
+	startIterator = dev->internal_start_block;
+	endIterator = dev->internal_end_block;
+
+	/* For each block.... */
+	for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
+	     blockIterator++) {
+
+		YYIELD();
+
+		YYIELD();
+
+		blk = blockIterator;
+
+		bi = yaffs_get_block_info(dev, blk);
+		state = bi->block_state;
+
+		deleted = 0;
+
+		/* For each chunk in each block that needs scanning....*/
+		for (c = 0; !alloc_failed && c < dev->param.chunks_per_block &&
+		     state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) {
+			/* Read the tags and decide what to do */
+			chunk = blk * dev->param.chunks_per_block + c;
+
+			result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL,
+							&tags);
+
+			/* Let's have a good look at this chunk... */
+
+			if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED || tags.is_deleted) {
+				/* YAFFS1 only...
+				 * A deleted chunk
+				 */
+				deleted++;
+				dev->n_free_chunks++;
+				/*T((" %d %d deleted\n",blk,c)); */
+			} else if (!tags.chunk_used) {
+				/* An unassigned chunk in the block
+				 * This means that either the block is empty or
+				 * this is the one being allocated from
+				 */
+
+				if (c == 0) {
+					/* We're looking at the first chunk in the block so the block is unused */
+					state = YAFFS_BLOCK_STATE_EMPTY;
+					dev->n_erased_blocks++;
+				} else {
+					/* this is the block being allocated from */
+					T(YAFFS_TRACE_SCAN,
+					  (TSTR
+					   (" Allocating from %d %d" TENDSTR),
+					   blk, c));
+					state = YAFFS_BLOCK_STATE_ALLOCATING;
+					dev->alloc_block = blk;
+					dev->alloc_page = c;
+					dev->alloc_block_finder = blk;
+					/* Set block finder here to encourage the allocator to go forth from here. */
+
+				}
+
+				dev->n_free_chunks += (dev->param.chunks_per_block - c);
+			} else if (tags.chunk_id > 0) {
+				/* chunk_id > 0 so it is a data chunk... */
+				unsigned int endpos;
+
+				yaffs_set_chunk_bit(dev, blk, c);
+				bi->pages_in_use++;
+
+				in = yaffs_find_or_create_by_number(dev,
+								      tags.
+								      obj_id,
+								      YAFFS_OBJECT_TYPE_FILE);
+				/* PutChunkIntoFile checks for a clash (two data chunks with
+				 * the same chunk_id).
+				 */
+
+				if (!in)
+					alloc_failed = 1;
+
+				if (in) {
+					if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, 1))
+						alloc_failed = 1;
+				}
+
+				endpos =
+				    (tags.chunk_id - 1) * dev->data_bytes_per_chunk +
+				    tags.n_bytes;
+				if (in &&
+				    in->variant_type == YAFFS_OBJECT_TYPE_FILE
+				    && in->variant.file_variant.scanned_size <
+				    endpos) {
+					in->variant.file_variant.
+					    scanned_size = endpos;
+					if (!dev->param.use_header_file_size) {
+						in->variant.file_variant.
+						    file_size =
+						    in->variant.file_variant.
+						    scanned_size;
+					}
+
+				}
+				/* T((" %d %d data %d %d\n",blk,c,tags.obj_id,tags.chunk_id));   */
+			} else {
+				/* chunk_id == 0, so it is an ObjectHeader.
+				 * Thus, we read in the object header and make the object
+				 */
+				yaffs_set_chunk_bit(dev, blk, c);
+				bi->pages_in_use++;
+
+				result = yaffs_rd_chunk_tags_nand(dev, chunk,
+								chunkData,
+								NULL);
+
+				oh = (yaffs_obj_header *) chunkData;
+
+				in = yaffs_find_by_number(dev,
+							      tags.obj_id);
+				if (in && in->variant_type != oh->type) {
+					/* This should not happen, but somehow
+					 * Wev'e ended up with an obj_id that has been reused but not yet
+					 * deleted, and worse still it has changed type. Delete the old object.
+					 */
+
+					yaffs_del_obj(in);
+
+					in = 0;
+				}
+
+				in = yaffs_find_or_create_by_number(dev,
+								      tags.
+								      obj_id,
+								      oh->type);
+
+				if (!in)
+					alloc_failed = 1;
+
+				if (in && oh->shadows_obj > 0) {
+
+					struct yaffs_shadow_fixer_s *fixer;
+					fixer = YMALLOC(sizeof(struct yaffs_shadow_fixer_s));
+					if (fixer) {
+						fixer->next = shadowFixerList;
+						shadowFixerList = fixer;
+						fixer->obj_id = tags.obj_id;
+						fixer->shadowed_id = oh->shadows_obj;
+						T(YAFFS_TRACE_SCAN,
+						  (TSTR
+						   (" Shadow fixer: %d shadows %d" TENDSTR),
+						   fixer->obj_id, fixer->shadowed_id));
+
+					}
+
+				}
+
+				if (in && in->valid) {
+					/* We have already filled this one. We have a duplicate and need to resolve it. */
+
+					unsigned existingSerial = in->serial;
+					unsigned newSerial = tags.serial_number;
+
+					if (((existingSerial + 1) & 3) == newSerial) {
+						/* Use new one - destroy the exisiting one */
+						yaffs_chunk_del(dev,
+								  in->hdr_chunk,
+								  1, __LINE__);
+						in->valid = 0;
+					} else {
+						/* Use existing - destroy this one. */
+						yaffs_chunk_del(dev, chunk, 1,
+								  __LINE__);
+					}
+				}
+
+				if (in && !in->valid &&
+				    (tags.obj_id == YAFFS_OBJECTID_ROOT ||
+				     tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND)) {
+					/* We only load some info, don't fiddle with directory structure */
+					in->valid = 1;
+					in->variant_type = oh->type;
+
+					in->yst_mode = oh->yst_mode;
+#ifdef CONFIG_YAFFS_WINCE
+					in->win_atime[0] = oh->win_atime[0];
+					in->win_ctime[0] = oh->win_ctime[0];
+					in->win_mtime[0] = oh->win_mtime[0];
+					in->win_atime[1] = oh->win_atime[1];
+					in->win_ctime[1] = oh->win_ctime[1];
+					in->win_mtime[1] = oh->win_mtime[1];
+#else
+					in->yst_uid = oh->yst_uid;
+					in->yst_gid = oh->yst_gid;
+					in->yst_atime = oh->yst_atime;
+					in->yst_mtime = oh->yst_mtime;
+					in->yst_ctime = oh->yst_ctime;
+					in->yst_rdev = oh->yst_rdev;
+#endif
+					in->hdr_chunk = chunk;
+					in->serial = tags.serial_number;
+
+				} else if (in && !in->valid) {
+					/* we need to load this info */
+
+					in->valid = 1;
+					in->variant_type = oh->type;
+
+					in->yst_mode = oh->yst_mode;
+#ifdef CONFIG_YAFFS_WINCE
+					in->win_atime[0] = oh->win_atime[0];
+					in->win_ctime[0] = oh->win_ctime[0];
+					in->win_mtime[0] = oh->win_mtime[0];
+					in->win_atime[1] = oh->win_atime[1];
+					in->win_ctime[1] = oh->win_ctime[1];
+					in->win_mtime[1] = oh->win_mtime[1];
+#else
+					in->yst_uid = oh->yst_uid;
+					in->yst_gid = oh->yst_gid;
+					in->yst_atime = oh->yst_atime;
+					in->yst_mtime = oh->yst_mtime;
+					in->yst_ctime = oh->yst_ctime;
+					in->yst_rdev = oh->yst_rdev;
+#endif
+					in->hdr_chunk = chunk;
+					in->serial = tags.serial_number;
+
+					yaffs_set_obj_name_from_oh(in, oh);
+					in->dirty = 0;
+
+					/* directory stuff...
+					 * hook up to parent
+					 */
+
+					parent =
+					    yaffs_find_or_create_by_number
+					    (dev, oh->parent_obj_id,
+					     YAFFS_OBJECT_TYPE_DIRECTORY);
+					if (!parent)
+						alloc_failed = 1;
+					if (parent && parent->variant_type ==
+					    YAFFS_OBJECT_TYPE_UNKNOWN) {
+						/* Set up as a directory */
+						parent->variant_type =
+							YAFFS_OBJECT_TYPE_DIRECTORY;
+						YINIT_LIST_HEAD(&parent->variant.
+								dir_variant.
+								children);
+					} else if (!parent || parent->variant_type !=
+						   YAFFS_OBJECT_TYPE_DIRECTORY) {
+						/* Hoosterman, another problem....
+						 * We're trying to use a non-directory as a directory
+						 */
+
+						T(YAFFS_TRACE_ERROR,
+						  (TSTR
+						   ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
+						    TENDSTR)));
+						parent = dev->lost_n_found;
+					}
+
+					yaffs_add_obj_to_dir(parent, in);
+
+					if (0 && (parent == dev->del_dir ||
+						  parent == dev->unlinked_dir)) {
+						in->deleted = 1;	/* If it is unlinked at start up then it wants deleting */
+						dev->n_deleted_files++;
+					}
+					/* Note re hardlinks.
+					 * Since we might scan a hardlink before its equivalent object is scanned
+					 * we put them all in a list.
+					 * After scanning is complete, we should have all the objects, so we run through this
+					 * list and fix up all the chains.
+					 */
+
+					switch (in->variant_type) {
+					case YAFFS_OBJECT_TYPE_UNKNOWN:
+						/* Todo got a problem */
+						break;
+					case YAFFS_OBJECT_TYPE_FILE:
+						if (dev->param.use_header_file_size)
+
+							in->variant.file_variant.
+							    file_size =
+							    oh->file_size;
+
+						break;
+					case YAFFS_OBJECT_TYPE_HARDLINK:
+						in->variant.hardlink_variant.
+							equiv_id =
+							oh->equiv_id;
+						in->hard_links.next =
+							(struct ylist_head *)
+							hard_list;
+						hard_list = in;
+						break;
+					case YAFFS_OBJECT_TYPE_DIRECTORY:
+						/* Do nothing */
+						break;
+					case YAFFS_OBJECT_TYPE_SPECIAL:
+						/* Do nothing */
+						break;
+					case YAFFS_OBJECT_TYPE_SYMLINK:
+						in->variant.symlink_variant.alias =
+						    yaffs_clone_str(oh->alias);
+						if (!in->variant.symlink_variant.alias)
+							alloc_failed = 1;
+						break;
+					}
+
+				}
+			}
+		}
+
+		if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+			/* If we got this far while scanning, then the block is fully allocated.*/
+			state = YAFFS_BLOCK_STATE_FULL;
+		}
+
+		if (state == YAFFS_BLOCK_STATE_ALLOCATING) {
+			/* If the block was partially allocated then treat it as fully allocated.*/
+			state = YAFFS_BLOCK_STATE_FULL;
+			dev->alloc_block = -1;
+		}
+
+		bi->block_state = state;
+
+		/* Now let's see if it was dirty */
+		if (bi->pages_in_use == 0 &&
+		    !bi->has_shrink_hdr &&
+		    bi->block_state == YAFFS_BLOCK_STATE_FULL) {
+			yaffs_block_became_dirty(dev, blk);
+		}
+
+	}
+
+
+	/* Ok, we've done all the scanning.
+	 * Fix up the hard link chains.
+	 * We should now have scanned all the objects, now it's time to add these
+	 * hardlinks.
+	 */
+
+	yaffs_link_fixup(dev, hard_list);
+
+	/* Fix up any shadowed objects */
+	{
+		struct yaffs_shadow_fixer_s *fixer;
+		yaffs_obj_t *obj;
+
+		while (shadowFixerList) {
+			fixer = shadowFixerList;
+			shadowFixerList = fixer->next;
+			/* Complete the rename transaction by deleting the shadowed object
+			 * then setting the object header to unshadowed.
+			 */
+			obj = yaffs_find_by_number(dev, fixer->shadowed_id);
+			if (obj)
+				yaffs_del_obj(obj);
+
+			obj = yaffs_find_by_number(dev, fixer->obj_id);
+
+			if (obj)
+				yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
+
+			YFREE(fixer);
+		}
+	}
+
+	yaffs_release_temp_buffer(dev, chunkData, __LINE__);
+
+	if (alloc_failed)
+		return YAFFS_FAIL;
+
+	T(YAFFS_TRACE_SCAN, (TSTR("yaffs1_scan ends" TENDSTR)));
+
+
+	return YAFFS_OK;
+}
+

target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h

@@ -0,0 +1,22 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+#ifndef __YAFFS_YAFFS1_H__
+#define __YAFFS_YAFFS1_H__
+
+#include "yaffs_guts.h"
+int yaffs1_scan(yaffs_dev_t *dev);
+
+#endif

target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h

@@ -0,0 +1,36 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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.
+ */
+
+#ifndef __YAFFS_YAFFS2_H__
+#define __YAFFS_YAFFS2_H__
+
+#include "yaffs_guts.h"
+
+void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev);
+void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev);
+void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi);
+void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi);
+int yaffs_block_ok_for_gc(yaffs_dev_t *dev, yaffs_block_info_t *bi);
+__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev);
+int yaffs2_checkpt_required(yaffs_dev_t *dev);
+int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev);
+
+
+void yaffs2_checkpt_invalidate(yaffs_dev_t *dev);
+int yaffs2_checkpt_save(yaffs_dev_t *dev);
+int yaffs2_checkpt_restore(yaffs_dev_t *dev);
+
+int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size);
+int yaffs2_scan_backwards(yaffs_dev_t *dev);
+
+#endif

target/linux/generic/files/fs/yaffs2/yaffsinterface.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -16,6 +16,6 @@
 #ifndef __YAFFSINTERFACE_H__
 #define __YAFFSINTERFACE_H__
 
-int yaffs_Initialise(unsigned nBlocks);
+int yaffs_initialise(unsigned nBlocks);
 
 #endif

target/linux/generic/files/fs/yaffs2/yportenv.h

@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -41,12 +41,14 @@
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
 #include <linux/config.h>
 #endif
+
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
+#include <linux/xattr.h>
 
 #define YCHAR char
 #define YUCHAR unsigned char
@@ -55,11 +57,11 @@
 #define yaffs_strcpy(a, b)     strcpy(a, b)
 #define yaffs_strncpy(a, b, c) strncpy(a, b, c)
 #define yaffs_strncmp(a, b, c) strncmp(a, b, c)
-#define yaffs_strlen(s)	       strlen(s)
+#define yaffs_strnlen(s,m)	strnlen(s,m)
 #define yaffs_sprintf	       sprintf
 #define yaffs_toupper(a)       toupper(a)
 
-#define Y_INLINE inline
+#define Y_INLINE __inline__
 
 #define YAFFS_LOSTNFOUND_NAME		"lost+found"
 #define YAFFS_LOSTNFOUND_PREFIX		"obj"
@@ -71,11 +73,11 @@
 #define YFREE_ALT(x)   vfree(x)
 #define YMALLOC_DMA(x) YMALLOC(x)
 
-/* KR - added for use in scan so processes aren't blocked indefinitely. */
 #define YYIELD() schedule()
+#define Y_DUMP_STACK() dump_stack()
 
-#define YAFFS_ROOT_MODE			0666
-#define YAFFS_LOSTNFOUND_MODE		0666
+#define YAFFS_ROOT_MODE			0755
+#define YAFFS_LOSTNFOUND_MODE		0700
 
 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 #define Y_CURRENT_TIME CURRENT_TIME.tv_sec
@@ -85,19 +87,14 @@
 #define Y_TIME_CONVERT(x) (x)
 #endif
 
-#define yaffs_SumCompare(x, y) ((x) == (y))
+#define yaffs_sum_cmp(x, y) ((x) == (y))
 #define yaffs_strcmp(a, b) strcmp(a, b)
 
 #define TENDSTR "\n"
-#define TSTR(x) KERN_WARNING x
+#define TSTR(x) KERN_DEBUG x
 #define TCONT(x) x
 #define TOUT(p) printk p
 
-#define yaffs_trace(mask, fmt, args...) \
-	do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \
-		printk(KERN_WARNING "yaffs: " fmt, ## args); \
-	} while (0)
-
 #define compile_time_assertion(assertion) \
 	({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; })
 
@@ -116,7 +113,6 @@
 #include "stdio.h"
 #include "string.h"
 
-#include "devextras.h"
 
 #define YMALLOC(x) malloc(x)
 #define YFREE(x)   free(x)
@@ -129,7 +125,7 @@
 #define yaffs_strcat(a, b)     strcat(a, b)
 #define yaffs_strcpy(a, b)     strcpy(a, b)
 #define yaffs_strncpy(a, b, c) strncpy(a, b, c)
-#define yaffs_strlen(s)	       strlen(s)
+#define yaffs_strnlen(s,m)	       strnlen(s,m)
 #define yaffs_sprintf	       sprintf
 #define yaffs_toupper(a)       toupper(a)
 
@@ -146,10 +142,10 @@
 #define YAFFS_LOSTNFOUND_PREFIX		"obj"
 /* #define YPRINTF(x) printf x */
 
-#define YAFFS_ROOT_MODE				0666
-#define YAFFS_LOSTNFOUND_MODE		0666
+#define YAFFS_ROOT_MODE			0755
+#define YAFFS_LOSTNFOUND_MODE		0700
 
-#define yaffs_SumCompare(x, y) ((x) == (y))
+#define yaffs_sum_cmp(x, y) ((x) == (y))
 #define yaffs_strcmp(a, b) strcmp(a, b)
 
 #else
@@ -158,46 +154,180 @@
 
 #endif
 
-/* see yaffs_fs.c */
-extern unsigned int yaffs_traceMask;
-extern unsigned int yaffs_wr_attempts;
+#if defined(CONFIG_YAFFS_DIRECT) || defined(CONFIG_YAFFS_WINCE)
 
-/*
- * Tracing flags.
- * The flags masked in YAFFS_TRACE_ALWAYS are always traced.
- */
+#ifdef CONFIG_YAFFSFS_PROVIDE_VALUES
 
-#define YAFFS_TRACE_OS			0x00000002
-#define YAFFS_TRACE_ALLOCATE		0x00000004
-#define YAFFS_TRACE_SCAN		0x00000008
-#define YAFFS_TRACE_BAD_BLOCKS		0x00000010
-#define YAFFS_TRACE_ERASE		0x00000020
-#define YAFFS_TRACE_GC			0x00000040
-#define YAFFS_TRACE_WRITE		0x00000080
-#define YAFFS_TRACE_TRACING		0x00000100
-#define YAFFS_TRACE_DELETION		0x00000200
-#define YAFFS_TRACE_BUFFERS		0x00000400
-#define YAFFS_TRACE_NANDACCESS		0x00000800
-#define YAFFS_TRACE_GC_DETAIL		0x00001000
-#define YAFFS_TRACE_SCAN_DEBUG		0x00002000
-#define YAFFS_TRACE_MTD			0x00004000
-#define YAFFS_TRACE_CHECKPOINT		0x00008000
+#ifndef O_RDONLY
+#define O_RDONLY        00
+#endif
 
-#define YAFFS_TRACE_VERIFY		0x00010000
-#define YAFFS_TRACE_VERIFY_NAND		0x00020000
-#define YAFFS_TRACE_VERIFY_FULL		0x00040000
-#define YAFFS_TRACE_VERIFY_ALL		0x000F0000
+#ifndef O_WRONLY
+#define O_WRONLY	01
+#endif
 
+#ifndef O_RDWR
+#define O_RDWR		02
+#endif
 
-#define YAFFS_TRACE_ERROR		0x40000000
-#define YAFFS_TRACE_BUG			0x80000000
-#define YAFFS_TRACE_ALWAYS		0xF0000000
+#ifndef O_CREAT		
+#define O_CREAT 	0100
+#endif
 
+#ifndef O_EXCL
+#define O_EXCL		0200
+#endif
 
-#define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0)
+#ifndef O_TRUNC
+#define O_TRUNC		01000
+#endif
+
+#ifndef O_APPEND
+#define O_APPEND	02000
+#endif
+
+#ifndef SEEK_SET
+#define SEEK_SET	0
+#endif
+
+#ifndef SEEK_CUR
+#define SEEK_CUR	1
+#endif
+
+#ifndef SEEK_END
+#define SEEK_END	2
+#endif
+
+#ifndef EBUSY
+#define EBUSY	16
+#endif
+
+#ifndef ENODEV
+#define ENODEV	19
+#endif
+
+#ifndef EINVAL
+#define EINVAL	22
+#endif
+
+#ifndef EBADF
+#define EBADF	9
+#endif
+
+#ifndef EACCES
+#define EACCES	13
+#endif
+
+#ifndef EXDEV	
+#define EXDEV	18
+#endif
+
+#ifndef ENOENT
+#define ENOENT	2
+#endif
+
+#ifndef ENOSPC
+#define ENOSPC	28
+#endif
+
+#ifndef ERANGE
+#define ERANGE 34
+#endif
+
+#ifndef ENODATA
+#define ENODATA 61
+#endif
+
+#ifndef ENOTEMPTY
+#define ENOTEMPTY 39
+#endif
+
+#ifndef ENAMETOOLONG
+#define ENAMETOOLONG 36
+#endif
+
+#ifndef ENOMEM
+#define ENOMEM 12
+#endif
+
+#ifndef EEXIST
+#define EEXIST 17
+#endif
+
+#ifndef ENOTDIR
+#define ENOTDIR 20
+#endif
+
+#ifndef EISDIR
+#define EISDIR 21
+#endif
+
+
+// Mode flags
+
+#ifndef S_IFMT
+#define S_IFMT		0170000
+#endif
+
+#ifndef S_IFLNK
+#define S_IFLNK		0120000
+#endif
+
+#ifndef S_IFDIR
+#define S_IFDIR		0040000
+#endif
+
+#ifndef S_IFREG
+#define S_IFREG		0100000
+#endif
+
+#ifndef S_IREAD 
+#define S_IREAD		0000400
+#endif
+
+#ifndef S_IWRITE
+#define	S_IWRITE	0000200
+#endif
+
+#ifndef S_IEXEC
+#define	S_IEXEC	0000100
+#endif
+
+#ifndef XATTR_CREATE
+#define XATTR_CREATE 1
+#endif
+
+#ifndef XATTR_REPLACE
+#define XATTR_REPLACE 2
+#endif
+
+#ifndef R_OK
+#define R_OK	4
+#define W_OK	2
+#define X_OK	1
+#define F_OK	0
+#endif
+
+#else
+#include <errno.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#endif
+
+#endif
+
+#ifndef Y_DUMP_STACK
+#define Y_DUMP_STACK() do { } while (0)
+#endif
 
 #ifndef YBUG
-#define YBUG() do {T(YAFFS_TRACE_BUG, (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR), __LINE__)); } while (0)
+#define YBUG() do {\
+	T(YAFFS_TRACE_BUG,\
+		(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),\
+		__LINE__));\
+	Y_DUMP_STACK();\
+} while (0)
 #endif
 
+
 #endif